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libvips/cplusplus/include/vips/VImage8.h
John Cupitt 6357fd5651 more C++ docs
2020-09-07 19:26:51 +01:00

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// VIPS image wrapper
/*
This file is part of VIPS.
VIPS is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
*/
/*
These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
*/
#ifndef VIPS_VIMAGE_H
#define VIPS_VIMAGE_H
#include <list>
#include <complex>
#include <vector>
#include <cstring>
#include <vips/vips.h>
VIPS_NAMESPACE_START
/* Small utility things.
*/
VIPS_CPLUSPLUS_API std::vector<double> to_vectorv( int n, ... );
VIPS_CPLUSPLUS_API std::vector<double> to_vector( double value );
VIPS_CPLUSPLUS_API std::vector<double> to_vector( int n, double array[] );
VIPS_CPLUSPLUS_API std::vector<double> negate( std::vector<double> value );
VIPS_CPLUSPLUS_API std::vector<double> invert( std::vector<double> value );
/**
* Whether or not VObject should take over the reference that you pass in. See
* VObject().
*/
enum VSteal {
NOSTEAL = 0,
STEAL = 1
};
/**
* A smart VipsObject pointer. It calls g_object_ref()/_unref() for you
* automatically.
*
* VObjects can be null (have no value set). See is_null().
*/
class VObject
{
private:
// can be NULL, see eg. VObject()
VipsObject *vobject;
public:
/**
* Wrap a VObject around the underlying VipsObject pointer.
*
* If steal is STEAL, then the new VObject takes over the reference
* that you pass in.
*/
VObject( VipsObject *new_vobject, VSteal steal = STEAL ) :
vobject( new_vobject )
{
// we allow NULL init, eg. "VImage a;"
g_assert( !new_vobject ||
VIPS_IS_OBJECT( new_vobject ) );
#ifdef VIPS_DEBUG_VERBOSE
printf( "VObject constructor, obj = %p, steal = %d\n",
new_vobject, steal );
if( new_vobject ) {
printf( " obj " );
vips_object_print_name( VIPS_OBJECT( new_vobject ) );
printf( "\n" );
}
#endif /*VIPS_DEBUG_VERBOSE*/
if( !steal && vobject ) {
#ifdef VIPS_DEBUG_VERBOSE
printf( " reffing object\n" );
#endif /*VIPS_DEBUG_VERBOSE*/
g_object_ref( vobject );
}
}
VObject() :
vobject( 0 )
{
}
VObject( const VObject &a ) :
vobject( a.vobject )
{
g_assert( !vobject ||
VIPS_IS_OBJECT( vobject ) );
#ifdef VIPS_DEBUG_VERBOSE
printf( "VObject copy constructor, obj = %p\n",
vobject );
printf( " reffing object\n" );
#endif /*VIPS_DEBUG_VERBOSE*/
if( vobject )
g_object_ref( vobject );
}
// assignment ... we must delete the old ref
VObject &operator=( const VObject &a )
{
#ifdef VIPS_DEBUG_VERBOSE
printf( "VObject assignment\n" );
printf( " reffing %p\n", a.vobject );
printf( " unreffing %p\n", vobject );
#endif /*VIPS_DEBUG_VERBOSE*/
g_assert( !vobject ||
VIPS_IS_OBJECT( vobject ) );
g_assert( !a.vobject ||
VIPS_IS_OBJECT( a.vobject ) );
// delete the old ref at the end ... otherwise "a = a;" could
// unref before reffing again
if( a.vobject )
g_object_ref( a.vobject );
if( vobject )
g_object_unref( vobject );
vobject = a.vobject;
return( *this );
}
// this mustn't be virtual: we want this class to only be a pointer,
// no vtable allowed
~VObject()
{
#ifdef VIPS_DEBUG_VERBOSE
printf( "VObject destructor\n" );
printf( " unreffing %p\n", vobject );
#endif /*VIPS_DEBUG_VERBOSE*/
g_assert( !vobject ||
VIPS_IS_OBJECT( vobject ) );
if( vobject )
g_object_unref( vobject );
}
/**
* Return the underlying VipsObject pointer. This does not make a new
* reference -- you'll need to g_object_ref() the result if you want
* to keep it.
*/
VipsObject *
get_object() const
{
g_assert( !vobject ||
VIPS_IS_OBJECT( vobject ) );
return( vobject );
}
/**
* TRUE if this is a null VObject.
*/
bool is_null() const
{
return vobject == 0;
}
};
class VIPS_CPLUSPLUS_API VImage;
class VIPS_CPLUSPLUS_API VInterpolate;
class VIPS_CPLUSPLUS_API VSource;
class VIPS_CPLUSPLUS_API VTarget;
class VIPS_CPLUSPLUS_API VOption;
/**
* A list of name-value pairs. Pass these to libvips operations to set
* options. For example:
*
* VImage out = in.embed( 10, 10, 1000, 1000, VImage::option()
* ->set( "extend", "background" )
* ->set( "background", 128 ) );
*
* The `set` member functions will take copies (or hold references to)
* compound objects, so you can free them immediately afterwards if necessary.
*
* You can get values back from operations by using the * form of the set
* member functions. For example:
*
* VImage in = VImage::new_from_file( argv[1] );
* int x, y;
* double value = in.max( VImage::option()
* set( "x", &x )
* set( "y", &y ) );
*
*/
class VOption {
private:
struct Pair {
const char *name;
// the thing we pass to and from our caller
GValue value;
// an input or output parameter ... we guess the direction
// from the arg to set()
bool input;
// the pointer we write output values to
union {
bool *vbool;
int *vint;
double *vdouble;
VImage *vimage;
std::vector<double> *vvector;
VipsBlob **vblob;
};
Pair( const char *name ) :
name( name ), input( false ), vimage( 0 )
{
// argh = {0} won't work wil vanilla C++
memset( &value, 0, sizeof( GValue ) );
}
~Pair()
{
g_value_unset( &value );
}
};
std::list<Pair *> options;
public:
VOption()
{
}
virtual ~VOption();
/**
* Set an input boolean option.
*/
VOption *
set( const char *name, bool value );
/**
* Set an input int option. This is used for enums as well, or you can
* use the string version.
*/
VOption *
set( const char *name, int value );
/**
* Set an input unsigned 64-bit integer option.
*/
VOption *
set( const char *name, guint64 value );
/**
* Set an input double option.
*/
VOption *
set( const char *name, double value );
/**
* Set an input string option.
*
* A copy is taken of the object.
*/
VOption *
set( const char *name, const char *value );
/**
* Set a libvips object as an option. These can be images, sources,
* targets, etc.
*
* A copy is taken of the object.
*/
VOption *
set( const char *name, const VObject value );
/**
* Set an array of integers as an input option.
*
* A copy is taken of the object.
*/
VOption *
set( const char *name, std::vector<int> value );
/**
* Set an array of doubles as an input option.
*
* A copy is taken of the object.
*/
VOption *
set( const char *name, std::vector<double> value );
/**
* Set an array of images as an input option.
*
* A copy is taken of the object.
*/
VOption *
set( const char *name, std::vector<VImage> value );
/**
* Set a binary object an input option. Use vips_blob_new() to make
* blobs.
*
* A copy is taken of the object.
*/
VOption *
set( const char *name, VipsBlob *value );
/**
* Set an option which will return a bool value.
*/
VOption *
set( const char *name, bool *value );
/**
* Set an option which will return an integer value.
*/
VOption *
set( const char *name, int *value );
/**
* Set an option which will return a double value.
*/
VOption *
set( const char *name, double *value );
/**
* Set an option which will return a reference to an image.
*/
VOption *
set( const char *name, VImage *value );
/**
* Set an option which will return an array of doubles.
*/
VOption *
set( const char *name, std::vector<double> *value );
/**
* Set an option which will return a binary object, such as an ICC
* profile.
*/
VOption *
set( const char *name, VipsBlob **blob );
/**
* Walk the set of options, setting options on the operation. This is
* used internally by VImage::call().
*/
void
set_operation( VipsOperation *operation );
/**
* Walk the set of options, fetching any output values. This is used
* internally by VImage::call().
*/
void
get_operation( VipsOperation *operation );
};
/**
* An image object.
*
* Image processing operations on images are member functions of VImage. For
* example:
*
* VImage in = VImage::new_from_file( argv[1], VImage::option()
* ->set( "access", "sequential" ) );
* VImage out = in.embed( 10, 10, 1000, 1000, VImage::option()
* ->set( "extend", "copy" ) );
* out.write_to_file( argv[2] );
*
* VImage objects are smart pointers over the underlying VipsImage objects.
* They manage the complications of GLib's ref and unref system for you.
*/
class VImage : public VObject
{
public:
using VObject::is_null;
/**
* Wrap a VImage around an underlying VipsImage object.
*
* If steal is STEAL, then the VImage will take ownership of the
* reference to the VipsImage.
*/
VImage( VipsImage *image, VSteal steal = STEAL ) :
VObject( (VipsObject *) image, steal )
{
}
/**
* An empty (NULL) VImage, eg. "VImage a;"
*/
VImage() :
VObject( 0 )
{
}
/**
* Return the underlying VipsImage reference that this VImage holds.
* This does not make a new reference -- you'll need to g_object_ref()
* the pointer if you need it to last.
*/
VipsImage *
get_image() const
{
return( (VipsImage *) VObject::get_object() );
}
/**
* Return the width of the image in pixels.
*/
int
width() const
{
return( vips_image_get_width( get_image() ) );
}
/**
* Return the height of the image in pixels.
*/
int
height() const
{
return( vips_image_get_height( get_image() ) );
}
/**
* Return the number of image bands.
*/
int
bands() const
{
return( vips_image_get_bands( get_image() ) );
}
/**
* Return the image format, for example VIPS_FORMAT_UCHAR.
*/
VipsBandFormat
format() const
{
return( vips_image_get_format( get_image() ) );
}
/**
* Return the image coding, for example VIPS_CODING_NONE.
*/
VipsCoding
coding() const
{
return( vips_image_get_coding( get_image() ) );
}
/**
* Return the image interpretation, for example
* VIPS_INTERPRETATION_sRGB.
*/
VipsInterpretation
interpretation() const
{
return( vips_image_get_interpretation( get_image() ) );
}
/**
* Try to guess the image interpretation from other fields. This is
* handy if the interpretation has not been set correctly.
*/
VipsInterpretation
guess_interpretation() const
{
return( vips_image_guess_interpretation( get_image() ) );
}
/**
* The horizontal resolution in pixels per millimeter.
*/
double
xres() const
{
return( vips_image_get_xres( get_image() ) );
}
/**
* The vertical resolution in pixels per millimeter.
*/
double
yres() const
{
return( vips_image_get_yres( get_image() ) );
}
/**
* The horizontal offset of the origin in pixels.
*/
int
xoffset() const
{
return( vips_image_get_xoffset( get_image() ) );
}
/**
* The vertical offset of the origin in pixels.
*/
int
yoffset() const
{
return( vips_image_get_yoffset( get_image() ) );
}
/**
* TRUE if the image has an alpha channel.
*/
bool
has_alpha() const
{
return( vips_image_hasalpha( get_image() ) );
}
/**
* The name of the file this image originally came from, or NULL if
* it's not a file image.
*/
const char *
filename() const
{
return( vips_image_get_filename( get_image() ) );
}
/**
* Arrange for the underlying object to be entirely in memory, then
* return a pointer to the first pixel.
*
* This can take a long time and need a very large amount of RAM.
*/
const void *
data() const
{
return( vips_image_get_data( get_image() ) );
}
/**
* Set the value of an int metadata item on an image.
*/
void
set( const char *field, int value )
{
vips_image_set_int( this->get_image(), field, value );
}
/**
* Set the value of an int array metadata item on an image.
*
* A copy of the array is taken.
*/
void
set( const char *field, int *value, int n )
{
vips_image_set_array_int( this->get_image(), field, value, n );
}
/**
* Set the value of an int array metadata item on an image.
*
* A copy of the array is taken.
*/
void
set( const char *field, std::vector<int> value )
{
vips_image_set_array_int( this->get_image(), field, &value[0],
static_cast<int>( value.size() ) );
}
/**
* Set the value of a double metadata item on an image.
*/
void
set( const char *field, double value )
{
vips_image_set_double( this->get_image(), field, value );
}
/**
* Set the value of a string metadata item on an image.
*
* A copy of the string is taken.
*/
void
set( const char *field, const char *value )
{
vips_image_set_string( this->get_image(), field, value );
}
/**
* Set the value of a binary object metadata item on an image, such as
* an ICC profile.
*
* When libvips no longer needs the value, it will be disposed with
* the free function. This can be NULL.
*/
void
set( const char *field,
VipsCallbackFn free_fn, void *data, size_t length )
{
vips_image_set_blob( this->get_image(), field,
free_fn, data, length );
}
/**
* Return the GType of a metadata item, or 0 if the named item does not
* exist.
*/
GType
get_typeof( const char *field ) const
{
return( vips_image_get_typeof( this->get_image(), field ) );
}
/**
* Get the value of a metadata item as an int.
*
* If the item is not of this type, an exception is thrown.
*/
int
get_int( const char *field ) const
{
int value;
if( vips_image_get_int( this->get_image(), field, &value ) )
throw( VError() );
return( value );
}
/**
* Get the value of a metadata item as an array of ints. Do not free
* the result.
*
* If the item is not of this type, an exception is thrown.
*/
void
get_array_int( const char *field, int **out, int *n ) const
{
if( vips_image_get_array_int( this->get_image(), field, out, n ) )
throw( VError() );
}
/**
* Get the value of a metadata item as an array of ints.
*
* If the item is not of this type, an exception is thrown.
*/
std::vector<int>
get_array_int( const char *field ) const
{
int length;
int *array;
if( vips_image_get_array_int( this->get_image(), field, &array, &length ) )
throw( VError() );
std::vector<int> vector( array, array + length );
return( vector );
}
/**
* Get the value of a metadata item as a double.
*
* If the item is not of this type, an exception is thrown.
*/
double
get_double( const char *field ) const
{
double value;
if( vips_image_get_double( this->get_image(), field, &value ) )
throw( VError() );
return( value );
}
/**
* Get the value of a metadata item as a string. You must not free the
* result.
*
* If the item is not of this type, an exception is thrown.
*/
const char *
get_string( const char *field ) const
{
const char *value;
if( vips_image_get_string( this->get_image(), field, &value ) )
throw( VError() );
return( value );
}
/**
* Get the value of a metadata item as a binary object. You must not
* free the result.
*
* If the item is not of this type, an exception is thrown.
*/
const void *
get_blob( const char *field, size_t *length ) const
{
const void *value;
if( vips_image_get_blob( this->get_image(), field,
&value, length ) )
throw( VError() );
return( value );
}
/**
* Remove a metadata item. This does nothing if the item does not
* exist.
*/
bool
remove( const char *name ) const
{
return( vips_image_remove( get_image(), name ) );
}
/**
* Make a new VOption. Can save some typing.
*/
static VOption *
option()
{
return( new VOption() );
}
/**
* Call any libvips operation, with a set of string-encoded options as
* well as VOption.
*/
static void
call_option_string( const char *operation_name,
const char *option_string, VOption *options = 0 );
/**
* Call any libvips operation.
*/
static void
call( const char *operation_name, VOption *options = 0 );
/**
* Make a new image which, when written to, will create a large memory
* object. See VImage::write().
*/
static VImage
new_memory()
{
return( VImage( vips_image_new_memory() ) );
}
/**
* Make a new VImage which, when written to, will craete a temporary
* file on disc. See VImage::write().
*/
static VImage
new_temp_file( const char *file_format = ".v" )
{
VipsImage *image;
if( !(image = vips_image_new_temp_file( file_format )) )
throw( VError() );
return( VImage( image ) );
}
/**
* Create a new VImage object from a file on disc.
*/
static VImage
new_from_file( const char *name, VOption *options = 0 );
/**
* Create a new VImage object from an area of memory containing a
* C-style array.
*/
static VImage
new_from_memory( void *data, size_t size,
int width, int height, int bands, VipsBandFormat format )
{
VipsImage *image;
if( !(image = vips_image_new_from_memory( data, size,
width, height, bands, format )) )
throw( VError() );
return( VImage( image ) );
}
/**
* Create a new VImage object from an area of memory containing an
* image encoded in some format such as JPEG.
*/
static VImage
new_from_buffer( const void *buf, size_t len,
const char *option_string, VOption *options = 0 );
/**
* Create a new VImage object from an area of memory containing an
* image encoded in some format such as JPEG.
*/
static VImage
new_from_buffer( const std::string &buf,
const char *option_string, VOption *options = 0 );
/**
* Create a new VImage object from a generic source object.
*/
static VImage
new_from_source( VSource source,
const char *option_string, VOption *options = 0 );
/**
* Create a matrix image of a specified size. All elements will be
* zero.
*/
static VImage new_matrix( int width, int height );
/**
* Create a matrix image of a specified size, initialized from the
* array.
*/
static VImage
new_matrix( int width, int height, double *array, int size )
{
VipsImage *image;
if( !(image = vips_image_new_matrix_from_array( width, height,
array, size )) )
throw( VError() );
return( VImage( image ) );
}
/**
* Create a matrix image of a specified size, initialized from the
* function parameters.
*/
static VImage
new_matrixv( int width, int height, ... );
/**
* Make a new image of the same size and type as self, but with each
* pixel initialized with the constant.
*/
VImage
new_from_image( std::vector<double> pixel ) const
{
VipsImage *image;
if( !(image = vips_image_new_from_image( this->get_image(),
&pixel[0], static_cast<int>( pixel.size() ) )) )
throw( VError() );
return( VImage( image ) );
}
/**
* Make a new image of the same size and type as self, but with each
* pixel initialized with the constant.
*/
VImage
new_from_image( double pixel ) const
{
return( new_from_image( to_vectorv( 1, pixel ) ) );
}
/**
* Make a new image by rendering self to a large memory area,
* wrapping a VImage around it, and setting all metadata from self.
*/
VImage
copy_memory() const
{
VipsImage *image;
if( !(image = vips_image_copy_memory( this->get_image() )) )
throw( VError() );
return( VImage( image ) );
}
/**
* Write self to out. See VImage::new_memory() etc.
*/
VImage write( VImage out ) const;
/**
* Write an image to a file.
*/
void write_to_file( const char *name, VOption *options = 0 ) const;
/**
* Write an image to an area of memory in the specified format. You
* must free() the memory area once you are done with it.
*
* For example:
*
* void *buf;
* size_t size;
* image.write_to_buffer( ".jpg", &buf, &size );
*
*/
void write_to_buffer( const char *suffix, void **buf, size_t *size,
VOption *options = 0 ) const;
/**
* Write an image to a generic target object in the specified format.
*/
void write_to_target( const char *suffix, VTarget target,
VOption *options = 0 ) const;
/**
* Write an image to an area of memory as a C-style array.
*/
void *
write_to_memory( size_t *size ) const
{
void *result;
if( !(result = vips_image_write_to_memory( this->get_image(),
size )) )
throw( VError() );
return( result );
}
/**
* Apply a linear transform to an image. For every pixel,
*
* out = in * a + b
*/
VImage
linear( double a, double b, VOption *options = 0 ) const
{
return( this->linear( to_vector( a ), to_vector( b ),
options ) );
}
/**
* Apply a linear transform to an image. For every pixel,
*
* out = in * a + b
*/
VImage
linear( std::vector<double> a, double b, VOption *options = 0 ) const
{
return( this->linear( a, to_vector( b ), options ) );
}
/**
* Apply a linear transform to an image. For every pixel,
*
* out = in * a + b
*/
VImage
linear( double a, std::vector<double> b, VOption *options = 0 ) const
{
return( this->linear( to_vector( a ), b, options ) );
}
/**
* Split a many-band image into an array of one-band images.
*/
std::vector<VImage> bandsplit( VOption *options = 0 ) const;
/**
* Join two images bandwise.
*/
VImage bandjoin( VImage other, VOption *options = 0 ) const;
/**
* Append a band to an image, with each element initialized to the
* constant value.
*/
VImage
bandjoin( double other, VOption *options = 0 ) const
{
return( bandjoin( to_vector( other ), options ) );
}
/**
* Append a series of bands to an image, with each element initialized
* to the constant values.
*/
VImage
bandjoin( std::vector<double> other, VOption *options = 0 ) const
{
return( bandjoin_const( other, options ) );
}
/**
* Composite other on top of self using the specified blending mode.
*/
VImage composite( VImage other, VipsBlendMode mode,
VOption *options = 0 ) const;
/**
* Find the position of the image minimum as (x, y).
*/
std::complex<double> minpos( VOption *options = 0 ) const;
/**
* Find the position of the image maximum as (x, y).
*/
std::complex<double> maxpos( VOption *options = 0 ) const;
/**
* Flip the image left-right.
*/
VImage
fliphor( VOption *options = 0 ) const
{
return( flip( VIPS_DIRECTION_HORIZONTAL, options ) );
}
/**
* Flip the image top-bottom.
*/
VImage
flipver( VOption *options = 0 ) const
{
return( flip( VIPS_DIRECTION_VERTICAL, options ) );
}
/**
* Rotate the image by 90 degrees clockwise.
*/
VImage
rot90( VOption *options = 0 ) const
{
return( rot( VIPS_ANGLE_D90, options ) );
}
/**
* Rotate the image by 180 degrees.
*/
VImage
rot180( VOption *options = 0 ) const
{
return( rot( VIPS_ANGLE_D180, options ) );
}
/**
* Rotate the image by 270 degrees clockwise.
*/
VImage
rot270( VOption *options = 0 ) const
{
return( rot( VIPS_ANGLE_D270, options ) );
}
/**
* Dilate the image with the specified strucuring element, see
* VImage::new_matrix(). Stucturing element values can be 0 for
* black, 255 for white and 128 for don't care. See VImage::morph().
*/
VImage
dilate( VImage mask, VOption *options = 0 ) const
{
return( morph( mask, VIPS_OPERATION_MORPHOLOGY_DILATE,
options ) );
}
/**
* Erode the image with the specified strucuring element, see
* VImage::new_matrix(). Stucturing element values can be 0 for
* black, 255 for white and 128 for don't care. See VImage::morph().
*/
VImage
erode( VImage mask, VOption *options = 0 ) const
{
return( morph( mask, VIPS_OPERATION_MORPHOLOGY_ERODE,
options ) );
}
/**
* A median filter of the specified size. See VImage::rank().
*/
VImage
median( int size = 3, VOption *options = 0 ) const
{
return( rank( size, size, (size * size) / 2, options ) );
}
VImage
floor( VOption *options = 0 ) const
{
return( round( VIPS_OPERATION_ROUND_FLOOR, options ) );
}
VImage
ceil( VOption *options = 0 ) const
{
return( round( VIPS_OPERATION_ROUND_CEIL, options ) );
}
VImage
rint( VOption *options = 0 ) const
{
return( round( VIPS_OPERATION_ROUND_RINT, options ) );
}
VImage
bandand( VOption *options = 0 ) const
{
return( bandbool( VIPS_OPERATION_BOOLEAN_AND, options ) );
}
VImage
bandor( VOption *options = 0 ) const
{
return( bandbool( VIPS_OPERATION_BOOLEAN_OR, options ) );
}
VImage
bandeor( VOption *options = 0 ) const
{
return( bandbool( VIPS_OPERATION_BOOLEAN_EOR, options ) );
}
VImage
real( VOption *options = 0 ) const
{
return( complexget( VIPS_OPERATION_COMPLEXGET_REAL, options ) );
}
VImage
imag( VOption *options = 0 ) const
{
return( complexget( VIPS_OPERATION_COMPLEXGET_IMAG, options ) );
}
VImage
polar( VOption *options = 0 ) const
{
return( complex( VIPS_OPERATION_COMPLEX_POLAR, options ) );
}
VImage
rect( VOption *options = 0 ) const
{
return( complex( VIPS_OPERATION_COMPLEX_RECT, options ) );
}
VImage
conj( VOption *options = 0 ) const
{
return( complex( VIPS_OPERATION_COMPLEX_CONJ, options ) );
}
VImage
sin( VOption *options = 0 ) const
{
return( math( VIPS_OPERATION_MATH_SIN, options ) );
}
VImage
cos( VOption *options = 0 ) const
{
return( math( VIPS_OPERATION_MATH_COS, options ) );
}
VImage
tan( VOption *options = 0 ) const
{
return( math( VIPS_OPERATION_MATH_TAN, options ) );
}
VImage
asin( VOption *options = 0 ) const
{
return( math( VIPS_OPERATION_MATH_ASIN, options ) );
}
VImage
acos( VOption *options = 0 ) const
{
return( math( VIPS_OPERATION_MATH_ACOS, options ) );
}
VImage
atan( VOption *options = 0 ) const
{
return( math( VIPS_OPERATION_MATH_ATAN, options ) );
}
VImage
log( VOption *options = 0 ) const
{
return( math( VIPS_OPERATION_MATH_LOG, options ) );
}
VImage
log10( VOption *options = 0 ) const
{
return( math( VIPS_OPERATION_MATH_LOG10, options ) );
}
VImage
exp( VOption *options = 0 ) const
{
return( math( VIPS_OPERATION_MATH_EXP, options ) );
}
VImage
exp10( VOption *options = 0 ) const
{
return( math( VIPS_OPERATION_MATH_EXP10, options ) );
}
VImage
pow( VImage other, VOption *options = 0 ) const
{
return( math2( other, VIPS_OPERATION_MATH2_POW, options ) );
}
VImage
pow( double other, VOption *options = 0 ) const
{
return( math2_const( VIPS_OPERATION_MATH2_POW,
to_vector( other ), options ) );
}
VImage
pow( std::vector<double> other, VOption *options = 0 ) const
{
return( math2_const( VIPS_OPERATION_MATH2_POW,
other, options ) );
}
VImage
wop( VImage other, VOption *options = 0 ) const
{
return( math2( other, VIPS_OPERATION_MATH2_WOP, options ) );
}
VImage
wop( double other, VOption *options = 0 ) const
{
return( math2_const( VIPS_OPERATION_MATH2_WOP,
to_vector( other ), options ) );
}
VImage
wop( std::vector<double> other, VOption *options = 0 ) const
{
return( math2_const( VIPS_OPERATION_MATH2_WOP,
other, options ) );
}
VImage
ifthenelse( std::vector<double> th, VImage el,
VOption *options = 0 ) const
{
return( ifthenelse( el.new_from_image( th ), el, options ) );
}
VImage
ifthenelse( VImage th, std::vector<double> el,
VOption *options = 0 ) const
{
return( ifthenelse( th, th.new_from_image( el ), options ) );
}
VImage
ifthenelse( std::vector<double> th, std::vector<double> el,
VOption *options = 0 ) const
{
return( ifthenelse( new_from_image( th ), new_from_image( el ),
options ) );
}
VImage
ifthenelse( double th, VImage el, VOption *options = 0 ) const
{
return( ifthenelse( to_vector( th ), el, options ) );
}
VImage
ifthenelse( VImage th, double el, VOption *options = 0 ) const
{
return( ifthenelse( th, to_vector( el ), options ) );
}
VImage
ifthenelse( double th, double el, VOption *options = 0 ) const
{
return( ifthenelse( to_vector( th ), to_vector( el ),
options ) );
}
// Operator overloads
VImage operator[]( int index ) const;
std::vector<double> operator()( int x, int y ) const;
friend VIPS_CPLUSPLUS_API VImage
operator+( const VImage a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator+( const double a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator+( const VImage a, const double b );
friend VIPS_CPLUSPLUS_API VImage
operator+( const std::vector<double> a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator+( const VImage a, const std::vector<double> b );
friend VIPS_CPLUSPLUS_API VImage &
operator+=( VImage &a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage &
operator+=( VImage &a, const double b );
friend VIPS_CPLUSPLUS_API VImage &
operator+=( VImage &a, const std::vector<double> b );
friend VIPS_CPLUSPLUS_API VImage
operator-( const VImage a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator-( const double a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator-( const VImage a, const double b );
friend VIPS_CPLUSPLUS_API VImage
operator-( const std::vector<double> a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator-( const VImage a, const std::vector<double> b );
friend VIPS_CPLUSPLUS_API VImage &
operator-=( VImage &a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage &
operator-=( VImage &a, const double b );
friend VIPS_CPLUSPLUS_API VImage &
operator-=( VImage &a, const std::vector<double> b );
friend VIPS_CPLUSPLUS_API VImage
operator-( const VImage a );
friend VIPS_CPLUSPLUS_API VImage
operator*( const VImage a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator*( const double a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator*( const VImage a, const double b );
friend VIPS_CPLUSPLUS_API VImage
operator*( const std::vector<double> a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator*( const VImage a, const std::vector<double> b );
friend VIPS_CPLUSPLUS_API VImage &
operator*=( VImage &a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage &
operator*=( VImage &a, const double b );
friend VIPS_CPLUSPLUS_API VImage &
operator*=( VImage &a, const std::vector<double> b );
friend VIPS_CPLUSPLUS_API VImage
operator/( const VImage a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator/( const double a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator/( const VImage a, const double b );
friend VIPS_CPLUSPLUS_API VImage
operator/( const std::vector<double> a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator/( const VImage a, const std::vector<double> b );
friend VIPS_CPLUSPLUS_API VImage &
operator/=( VImage &a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage &
operator/=( VImage &a, const double b );
friend VIPS_CPLUSPLUS_API VImage &
operator/=( VImage &a, const std::vector<double> b );
friend VIPS_CPLUSPLUS_API VImage
operator%( const VImage a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator%( const VImage a, const double b );
friend VIPS_CPLUSPLUS_API VImage
operator%( const VImage a, const std::vector<double> b );
friend VIPS_CPLUSPLUS_API VImage &
operator%=( VImage &a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage &
operator%=( VImage &a, const double b );
friend VIPS_CPLUSPLUS_API VImage &
operator%=( VImage &a, const std::vector<double> b );
friend VIPS_CPLUSPLUS_API VImage
operator<( const VImage a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator<( const double a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator<( const VImage a, const double b );
friend VIPS_CPLUSPLUS_API VImage
operator<( const std::vector<double> a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator<( const VImage a, const std::vector<double> b );
friend VIPS_CPLUSPLUS_API VImage
operator<=( const VImage a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator<=( const double a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator<=( const VImage a, const double b );
friend VIPS_CPLUSPLUS_API VImage
operator<=( const std::vector<double> a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator<=( const VImage a, const std::vector<double> b );
friend VIPS_CPLUSPLUS_API VImage
operator>( const VImage a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator>( const double a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator>( const VImage a, const double b );
friend VIPS_CPLUSPLUS_API VImage
operator>( const std::vector<double> a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator>( const VImage a, const std::vector<double> b );
friend VIPS_CPLUSPLUS_API VImage
operator>=( const VImage a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator>=( const double a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator>=( const VImage a, const double b );
friend VIPS_CPLUSPLUS_API VImage
operator>=( const std::vector<double> a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator>=( const VImage a, const std::vector<double> b );
friend VIPS_CPLUSPLUS_API VImage
operator==( const VImage a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator==( const double a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator==( const VImage a, const double b );
friend VIPS_CPLUSPLUS_API VImage
operator==( const std::vector<double> a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator==( const VImage a, const std::vector<double> b );
friend VIPS_CPLUSPLUS_API VImage
operator!=( const VImage a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator!=( const double a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator!=( const VImage a, const double b );
friend VIPS_CPLUSPLUS_API VImage
operator!=( const std::vector<double> a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator!=( const VImage a, const std::vector<double> b );
friend VIPS_CPLUSPLUS_API VImage
operator&( const VImage a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator&( const double a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator&( const VImage a, const double b );
friend VIPS_CPLUSPLUS_API VImage
operator&( const std::vector<double> a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator&( const VImage a, const std::vector<double> b );
friend VIPS_CPLUSPLUS_API VImage &
operator&=( VImage &a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage &
operator&=( VImage &a, const double b );
friend VIPS_CPLUSPLUS_API VImage &
operator&=( VImage &a, const std::vector<double> b );
friend VIPS_CPLUSPLUS_API VImage
operator|( const VImage a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator|( const double a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator|( const VImage a, const double b );
friend VIPS_CPLUSPLUS_API VImage
operator|( const std::vector<double> a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator|( const VImage a, const std::vector<double> b );
friend VIPS_CPLUSPLUS_API VImage &
operator|=( VImage &a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage &
operator|=( VImage &a, const double b );
friend VIPS_CPLUSPLUS_API VImage &
operator|=( VImage &a, const std::vector<double> b );
friend VIPS_CPLUSPLUS_API VImage
operator^( const VImage a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator^( const double a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator^( const VImage a, const double b );
friend VIPS_CPLUSPLUS_API VImage
operator^( const std::vector<double> a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator^( const VImage a, const std::vector<double> b );
friend VIPS_CPLUSPLUS_API VImage &
operator^=( VImage &a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage &
operator^=( VImage &a, const double b );
friend VIPS_CPLUSPLUS_API VImage &
operator^=( VImage &a, const std::vector<double> b );
friend VIPS_CPLUSPLUS_API VImage
operator<<( const VImage a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator<<( const VImage a, const double b );
friend VIPS_CPLUSPLUS_API VImage
operator<<( const VImage a, const std::vector<double> b );
friend VIPS_CPLUSPLUS_API VImage &
operator<<=( VImage &a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage &
operator<<=( VImage &a, const double b );
friend VIPS_CPLUSPLUS_API VImage &
operator<<=( VImage &a, const std::vector<double> b );
friend VIPS_CPLUSPLUS_API VImage
operator>>( const VImage a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage
operator>>( const VImage a, const double b );
friend VIPS_CPLUSPLUS_API VImage
operator>>( const VImage a, const std::vector<double> b );
friend VIPS_CPLUSPLUS_API VImage &
operator>>=( VImage &a, const VImage b );
friend VIPS_CPLUSPLUS_API VImage &
operator>>=( VImage &a, const double b );
friend VIPS_CPLUSPLUS_API VImage &
operator>>=( VImage &a, const std::vector<double> b );
/* Automatically generated members.
*
* Rebuild with:
*
* make vips-operators.h
*
* Then delete from here to the end of the class and paste in
* vips-operators.h. We could just #include vips-operators.h, but
* that confuses doxygen.
*/
// headers for vips operations
// Wed 19 Aug 14:34:56 BST 2020
// this file is generated automatically, do not edit!
/**
* Transform lch to cmc.
* @param options Set of options.
* @return Output image.
*/
VImage CMC2LCh( VOption *options = 0 ) const;
/**
* Transform cmyk to xyz.
* @param options Set of options.
* @return Output image.
*/
VImage CMYK2XYZ( VOption *options = 0 ) const;
/**
* Transform hsv to srgb.
* @param options Set of options.
* @return Output image.
*/
VImage HSV2sRGB( VOption *options = 0 ) const;
/**
* Transform lch to cmc.
* @param options Set of options.
* @return Output image.
*/
VImage LCh2CMC( VOption *options = 0 ) const;
/**
* Transform lch to lab.
* @param options Set of options.
* @return Output image.
*/
VImage LCh2Lab( VOption *options = 0 ) const;
/**
* Transform lab to lch.
* @param options Set of options.
* @return Output image.
*/
VImage Lab2LCh( VOption *options = 0 ) const;
/**
* Transform float lab to labq coding.
* @param options Set of options.
* @return Output image.
*/
VImage Lab2LabQ( VOption *options = 0 ) const;
/**
* Transform float lab to signed short.
* @param options Set of options.
* @return Output image.
*/
VImage Lab2LabS( VOption *options = 0 ) const;
/**
* Transform cielab to xyz.
*
* **Optional parameters**
* - **temp** -- Color temperature, std::vector<double>.
*
* @param options Set of options.
* @return Output image.
*/
VImage Lab2XYZ( VOption *options = 0 ) const;
/**
* Unpack a labq image to float lab.
* @param options Set of options.
* @return Output image.
*/
VImage LabQ2Lab( VOption *options = 0 ) const;
/**
* Unpack a labq image to short lab.
* @param options Set of options.
* @return Output image.
*/
VImage LabQ2LabS( VOption *options = 0 ) const;
/**
* Convert a labq image to srgb.
* @param options Set of options.
* @return Output image.
*/
VImage LabQ2sRGB( VOption *options = 0 ) const;
/**
* Transform signed short lab to float.
* @param options Set of options.
* @return Output image.
*/
VImage LabS2Lab( VOption *options = 0 ) const;
/**
* Transform short lab to labq coding.
* @param options Set of options.
* @return Output image.
*/
VImage LabS2LabQ( VOption *options = 0 ) const;
/**
* Transform xyz to cmyk.
* @param options Set of options.
* @return Output image.
*/
VImage XYZ2CMYK( VOption *options = 0 ) const;
/**
* Transform xyz to lab.
*
* **Optional parameters**
* - **temp** -- Colour temperature, std::vector<double>.
*
* @param options Set of options.
* @return Output image.
*/
VImage XYZ2Lab( VOption *options = 0 ) const;
/**
* Transform xyz to yxy.
* @param options Set of options.
* @return Output image.
*/
VImage XYZ2Yxy( VOption *options = 0 ) const;
/**
* Transform xyz to scrgb.
* @param options Set of options.
* @return Output image.
*/
VImage XYZ2scRGB( VOption *options = 0 ) const;
/**
* Transform yxy to xyz.
* @param options Set of options.
* @return Output image.
*/
VImage Yxy2XYZ( VOption *options = 0 ) const;
/**
* Absolute value of an image.
* @param options Set of options.
* @return Output image.
*/
VImage abs( VOption *options = 0 ) const;
/**
* Add two images.
* @param right Right-hand image argument.
* @param options Set of options.
* @return Output image.
*/
VImage add( VImage right, VOption *options = 0 ) const;
/**
* Affine transform of an image.
*
* **Optional parameters**
* - **interpolate** -- Interpolate pixels with this, VInterpolate.
* - **oarea** -- Area of output to generate, std::vector<int>.
* - **odx** -- Horizontal output displacement, double.
* - **ody** -- Vertical output displacement, double.
* - **idx** -- Horizontal input displacement, double.
* - **idy** -- Vertical input displacement, double.
* - **background** -- Background value, std::vector<double>.
* - **premultiplied** -- Images have premultiplied alpha, bool.
* - **extend** -- How to generate the extra pixels, VipsExtend.
*
* @param matrix Transformation matrix.
* @param options Set of options.
* @return Output image.
*/
VImage affine( std::vector<double> matrix, VOption *options = 0 ) const;
/**
* Load an analyze6 image.
*
* **Optional parameters**
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param filename Filename to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage analyzeload( const char *filename, VOption *options = 0 );
/**
* Join an array of images.
*
* **Optional parameters**
* - **across** -- Number of images across grid, int.
* - **shim** -- Pixels between images, int.
* - **background** -- Colour for new pixels, std::vector<double>.
* - **halign** -- Align on the left, centre or right, VipsAlign.
* - **valign** -- Align on the top, centre or bottom, VipsAlign.
* - **hspacing** -- Horizontal spacing between images, int.
* - **vspacing** -- Vertical spacing between images, int.
*
* @param in Array of input images.
* @param options Set of options.
* @return Output image.
*/
static VImage arrayjoin( std::vector<VImage> in, VOption *options = 0 );
/**
* Autorotate image by exif tag.
* @param options Set of options.
* @return Output image.
*/
VImage autorot( VOption *options = 0 ) const;
/**
* Find image average.
* @param options Set of options.
* @return Output value.
*/
double avg( VOption *options = 0 ) const;
/**
* Boolean operation across image bands.
* @param boolean boolean to perform.
* @param options Set of options.
* @return Output image.
*/
VImage bandbool( VipsOperationBoolean boolean, VOption *options = 0 ) const;
/**
* Fold up x axis into bands.
*
* **Optional parameters**
* - **factor** -- Fold by this factor, int.
*
* @param options Set of options.
* @return Output image.
*/
VImage bandfold( VOption *options = 0 ) const;
/**
* Bandwise join a set of images.
* @param in Array of input images.
* @param options Set of options.
* @return Output image.
*/
static VImage bandjoin( std::vector<VImage> in, VOption *options = 0 );
/**
* Append a constant band to an image.
* @param c Array of constants to add.
* @param options Set of options.
* @return Output image.
*/
VImage bandjoin_const( std::vector<double> c, VOption *options = 0 ) const;
/**
* Band-wise average.
* @param options Set of options.
* @return Output image.
*/
VImage bandmean( VOption *options = 0 ) const;
/**
* Band-wise rank of a set of images.
*
* **Optional parameters**
* - **index** -- Select this band element from sorted list, int.
*
* @param in Array of input images.
* @param options Set of options.
* @return Output image.
*/
static VImage bandrank( std::vector<VImage> in, VOption *options = 0 );
/**
* Unfold image bands into x axis.
*
* **Optional parameters**
* - **factor** -- Unfold by this factor, int.
*
* @param options Set of options.
* @return Output image.
*/
VImage bandunfold( VOption *options = 0 ) const;
/**
* Make a black image.
*
* **Optional parameters**
* - **bands** -- Number of bands in image, int.
*
* @param width Image width in pixels.
* @param height Image height in pixels.
* @param options Set of options.
* @return Output image.
*/
static VImage black( int width, int height, VOption *options = 0 );
/**
* Boolean operation on two images.
* @param right Right-hand image argument.
* @param boolean boolean to perform.
* @param options Set of options.
* @return Output image.
*/
VImage boolean( VImage right, VipsOperationBoolean boolean, VOption *options = 0 ) const;
/**
* Boolean operations against a constant.
* @param boolean boolean to perform.
* @param c Array of constants.
* @param options Set of options.
* @return Output image.
*/
VImage boolean_const( VipsOperationBoolean boolean, std::vector<double> c, VOption *options = 0 ) const;
/**
* Build a look-up table.
* @param options Set of options.
* @return Output image.
*/
VImage buildlut( VOption *options = 0 ) const;
/**
* Byteswap an image.
* @param options Set of options.
* @return Output image.
*/
VImage byteswap( VOption *options = 0 ) const;
/**
* Cache an image.
*
* **Optional parameters**
* - **max_tiles** -- Maximum number of tiles to cache, int.
* - **tile_height** -- Tile height in pixels, int.
* - **tile_width** -- Tile width in pixels, int.
*
* @param options Set of options.
* @return Output image.
*/
VImage cache( VOption *options = 0 ) const;
/**
* Canny edge detector.
*
* **Optional parameters**
* - **sigma** -- Sigma of Gaussian, double.
* - **precision** -- Convolve with this precision, VipsPrecision.
*
* @param options Set of options.
* @return Output image.
*/
VImage canny( VOption *options = 0 ) const;
/**
* Use pixel values to pick cases from an array of images.
* @param cases Array of case images.
* @param options Set of options.
* @return Output image.
*/
VImage case_image( std::vector<VImage> cases, VOption *options = 0 ) const;
/**
* Cast an image.
*
* **Optional parameters**
* - **shift** -- Shift integer values up and down, bool.
*
* @param format Format to cast to.
* @param options Set of options.
* @return Output image.
*/
VImage cast( VipsBandFormat format, VOption *options = 0 ) const;
/**
* Convert to a new colorspace.
*
* **Optional parameters**
* - **source_space** -- Source color space, VipsInterpretation.
*
* @param space Destination color space.
* @param options Set of options.
* @return Output image.
*/
VImage colourspace( VipsInterpretation space, VOption *options = 0 ) const;
/**
* Convolve with rotating mask.
*
* **Optional parameters**
* - **times** -- Rotate and convolve this many times, int.
* - **angle** -- Rotate mask by this much between convolutions, VipsAngle45.
* - **combine** -- Combine convolution results like this, VipsCombine.
* - **precision** -- Convolve with this precision, VipsPrecision.
* - **layers** -- Use this many layers in approximation, int.
* - **cluster** -- Cluster lines closer than this in approximation, int.
*
* @param mask Input matrix image.
* @param options Set of options.
* @return Output image.
*/
VImage compass( VImage mask, VOption *options = 0 ) const;
/**
* Perform a complex operation on an image.
* @param cmplx complex to perform.
* @param options Set of options.
* @return Output image.
*/
VImage complex( VipsOperationComplex cmplx, VOption *options = 0 ) const;
/**
* Complex binary operations on two images.
* @param right Right-hand image argument.
* @param cmplx binary complex operation to perform.
* @param options Set of options.
* @return Output image.
*/
VImage complex2( VImage right, VipsOperationComplex2 cmplx, VOption *options = 0 ) const;
/**
* Form a complex image from two real images.
* @param right Right-hand image argument.
* @param options Set of options.
* @return Output image.
*/
VImage complexform( VImage right, VOption *options = 0 ) const;
/**
* Get a component from a complex image.
* @param get complex to perform.
* @param options Set of options.
* @return Output image.
*/
VImage complexget( VipsOperationComplexget get, VOption *options = 0 ) const;
/**
* Blend an array of images with an array of blend modes.
*
* **Optional parameters**
* - **x** -- Array of x coordinates to join at, std::vector<int>.
* - **y** -- Array of y coordinates to join at, std::vector<int>.
* - **compositing_space** -- Composite images in this colour space, VipsInterpretation.
* - **premultiplied** -- Images have premultiplied alpha, bool.
*
* @param in Array of input images.
* @param mode Array of VipsBlendMode to join with.
* @param options Set of options.
* @return Output image.
*/
static VImage composite( std::vector<VImage> in, std::vector<int> mode, VOption *options = 0 );
/**
* Blend a pair of images with a blend mode.
*
* **Optional parameters**
* - **x** -- x position of overlay, int.
* - **y** -- y position of overlay, int.
* - **compositing_space** -- Composite images in this colour space, VipsInterpretation.
* - **premultiplied** -- Images have premultiplied alpha, bool.
*
* @param overlay Overlay image.
* @param mode VipsBlendMode to join with.
* @param options Set of options.
* @return Output image.
*/
VImage composite2( VImage overlay, VipsBlendMode mode, VOption *options = 0 ) const;
/**
* Convolution operation.
*
* **Optional parameters**
* - **precision** -- Convolve with this precision, VipsPrecision.
* - **layers** -- Use this many layers in approximation, int.
* - **cluster** -- Cluster lines closer than this in approximation, int.
*
* @param mask Input matrix image.
* @param options Set of options.
* @return Output image.
*/
VImage conv( VImage mask, VOption *options = 0 ) const;
/**
* Approximate integer convolution.
*
* **Optional parameters**
* - **layers** -- Use this many layers in approximation, int.
* - **cluster** -- Cluster lines closer than this in approximation, int.
*
* @param mask Input matrix image.
* @param options Set of options.
* @return Output image.
*/
VImage conva( VImage mask, VOption *options = 0 ) const;
/**
* Approximate separable integer convolution.
*
* **Optional parameters**
* - **layers** -- Use this many layers in approximation, int.
*
* @param mask Input matrix image.
* @param options Set of options.
* @return Output image.
*/
VImage convasep( VImage mask, VOption *options = 0 ) const;
/**
* Float convolution operation.
* @param mask Input matrix image.
* @param options Set of options.
* @return Output image.
*/
VImage convf( VImage mask, VOption *options = 0 ) const;
/**
* Int convolution operation.
* @param mask Input matrix image.
* @param options Set of options.
* @return Output image.
*/
VImage convi( VImage mask, VOption *options = 0 ) const;
/**
* Seperable convolution operation.
*
* **Optional parameters**
* - **precision** -- Convolve with this precision, VipsPrecision.
* - **layers** -- Use this many layers in approximation, int.
* - **cluster** -- Cluster lines closer than this in approximation, int.
*
* @param mask Input matrix image.
* @param options Set of options.
* @return Output image.
*/
VImage convsep( VImage mask, VOption *options = 0 ) const;
/**
* Copy an image.
*
* **Optional parameters**
* - **swap** -- Swap bytes in image between little and big-endian, bool.
* - **width** -- Image width in pixels, int.
* - **height** -- Image height in pixels, int.
* - **bands** -- Number of bands in image, int.
* - **format** -- Pixel format in image, VipsBandFormat.
* - **coding** -- Pixel coding, VipsCoding.
* - **interpretation** -- Pixel interpretation, VipsInterpretation.
* - **xres** -- Horizontal resolution in pixels/mm, double.
* - **yres** -- Vertical resolution in pixels/mm, double.
* - **xoffset** -- Horizontal offset of origin, int.
* - **yoffset** -- Vertical offset of origin, int.
*
* @param options Set of options.
* @return Output image.
*/
VImage copy( VOption *options = 0 ) const;
/**
* Count lines in an image.
* @param direction Countlines left-right or up-down.
* @param options Set of options.
* @return Number of lines.
*/
double countlines( VipsDirection direction, VOption *options = 0 ) const;
/**
* Extract an area from an image.
* @param left Left edge of extract area.
* @param top Top edge of extract area.
* @param width Width of extract area.
* @param height Height of extract area.
* @param options Set of options.
* @return Output image.
*/
VImage crop( int left, int top, int width, int height, VOption *options = 0 ) const;
/**
* Load csv.
*
* **Optional parameters**
* - **skip** -- Skip this many lines at the start of the file, int.
* - **lines** -- Read this many lines from the file, int.
* - **whitespace** -- Set of whitespace characters, const char *.
* - **separator** -- Set of separator characters, const char *.
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param filename Filename to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage csvload( const char *filename, VOption *options = 0 );
/**
* Load csv.
*
* **Optional parameters**
* - **skip** -- Skip this many lines at the start of the file, int.
* - **lines** -- Read this many lines from the file, int.
* - **whitespace** -- Set of whitespace characters, const char *.
* - **separator** -- Set of separator characters, const char *.
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param source Source to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage csvload_source( VSource source, VOption *options = 0 );
/**
* Save image to csv.
*
* **Optional parameters**
* - **separator** -- Separator characters, const char *.
* - **strip** -- Strip all metadata from image, bool.
* - **background** -- Background value, std::vector<double>.
* - **page_height** -- Set page height for multipage save, int.
*
* @param filename Filename to save to.
* @param options Set of options.
*/
void csvsave( const char *filename, VOption *options = 0 ) const;
/**
* Save image to csv.
*
* **Optional parameters**
* - **separator** -- Separator characters, const char *.
* - **strip** -- Strip all metadata from image, bool.
* - **background** -- Background value, std::vector<double>.
* - **page_height** -- Set page height for multipage save, int.
*
* @param target Target to save to.
* @param options Set of options.
*/
void csvsave_target( VTarget target, VOption *options = 0 ) const;
/**
* Calculate de00.
* @param right Right-hand input image.
* @param options Set of options.
* @return Output image.
*/
VImage dE00( VImage right, VOption *options = 0 ) const;
/**
* Calculate de76.
* @param right Right-hand input image.
* @param options Set of options.
* @return Output image.
*/
VImage dE76( VImage right, VOption *options = 0 ) const;
/**
* Calculate decmc.
* @param right Right-hand input image.
* @param options Set of options.
* @return Output image.
*/
VImage dECMC( VImage right, VOption *options = 0 ) const;
/**
* Find image standard deviation.
* @param options Set of options.
* @return Output value.
*/
double deviate( VOption *options = 0 ) const;
/**
* Divide two images.
* @param right Right-hand image argument.
* @param options Set of options.
* @return Output image.
*/
VImage divide( VImage right, VOption *options = 0 ) const;
/**
* Draw a circle on an image.
*
* **Optional parameters**
* - **fill** -- Draw a solid object, bool.
*
* @param ink Color for pixels.
* @param cx Centre of draw_circle.
* @param cy Centre of draw_circle.
* @param radius Radius in pixels.
* @param options Set of options.
*/
void draw_circle( std::vector<double> ink, int cx, int cy, int radius, VOption *options = 0 ) const;
/**
* Flood-fill an area.
*
* **Optional parameters**
* - **test** -- Test pixels in this image, VImage.
* - **equal** -- DrawFlood while equal to edge, bool.
*
* @param ink Color for pixels.
* @param x DrawFlood start point.
* @param y DrawFlood start point.
* @param options Set of options.
*/
void draw_flood( std::vector<double> ink, int x, int y, VOption *options = 0 ) const;
/**
* Paint an image into another image.
*
* **Optional parameters**
* - **mode** -- Combining mode, VipsCombineMode.
*
* @param sub Sub-image to insert into main image.
* @param x Draw image here.
* @param y Draw image here.
* @param options Set of options.
*/
void draw_image( VImage sub, int x, int y, VOption *options = 0 ) const;
/**
* Draw a line on an image.
* @param ink Color for pixels.
* @param x1 Start of draw_line.
* @param y1 Start of draw_line.
* @param x2 End of draw_line.
* @param y2 End of draw_line.
* @param options Set of options.
*/
void draw_line( std::vector<double> ink, int x1, int y1, int x2, int y2, VOption *options = 0 ) const;
/**
* Draw a mask on an image.
* @param ink Color for pixels.
* @param mask Mask of pixels to draw.
* @param x Draw mask here.
* @param y Draw mask here.
* @param options Set of options.
*/
void draw_mask( std::vector<double> ink, VImage mask, int x, int y, VOption *options = 0 ) const;
/**
* Paint a rectangle on an image.
*
* **Optional parameters**
* - **fill** -- Draw a solid object, bool.
*
* @param ink Color for pixels.
* @param left Rect to fill.
* @param top Rect to fill.
* @param width Rect to fill.
* @param height Rect to fill.
* @param options Set of options.
*/
void draw_rect( std::vector<double> ink, int left, int top, int width, int height, VOption *options = 0 ) const;
/**
* Blur a rectangle on an image.
* @param left Rect to fill.
* @param top Rect to fill.
* @param width Rect to fill.
* @param height Rect to fill.
* @param options Set of options.
*/
void draw_smudge( int left, int top, int width, int height, VOption *options = 0 ) const;
/**
* Save image to deepzoom file.
*
* **Optional parameters**
* - **dirname** -- Directory name to save to, const char *.
* - **basename** -- Base name to save to, const char *.
* - **layout** -- Directory layout, VipsForeignDzLayout.
* - **suffix** -- Filename suffix for tiles, const char *.
* - **overlap** -- Tile overlap in pixels, int.
* - **tile_size** -- Tile size in pixels, int.
* - **tile_height** -- Tile height in pixels, int.
* - **tile_width** -- Tile width in pixels, int.
* - **centre** -- Center image in tile, bool.
* - **depth** -- Pyramid depth, VipsForeignDzDepth.
* - **angle** -- Rotate image during save, VipsAngle.
* - **container** -- Pyramid container type, VipsForeignDzContainer.
* - **properties** -- Write a properties file to the output directory, bool.
* - **compression** -- ZIP deflate compression level, int.
* - **region_shrink** -- Method to shrink regions, VipsRegionShrink.
* - **skip_blanks** -- Skip tiles which are nearly equal to the background, int.
* - **no_strip** -- Don't strip tile metadata, bool.
* - **id** -- Resource ID, const char *.
* - **strip** -- Strip all metadata from image, bool.
* - **background** -- Background value, std::vector<double>.
* - **page_height** -- Set page height for multipage save, int.
*
* @param filename Filename to save to.
* @param options Set of options.
*/
void dzsave( const char *filename, VOption *options = 0 ) const;
/**
* Save image to dz buffer.
*
* **Optional parameters**
* - **dirname** -- Directory name to save to, const char *.
* - **basename** -- Base name to save to, const char *.
* - **layout** -- Directory layout, VipsForeignDzLayout.
* - **suffix** -- Filename suffix for tiles, const char *.
* - **overlap** -- Tile overlap in pixels, int.
* - **tile_size** -- Tile size in pixels, int.
* - **tile_height** -- Tile height in pixels, int.
* - **tile_width** -- Tile width in pixels, int.
* - **centre** -- Center image in tile, bool.
* - **depth** -- Pyramid depth, VipsForeignDzDepth.
* - **angle** -- Rotate image during save, VipsAngle.
* - **container** -- Pyramid container type, VipsForeignDzContainer.
* - **properties** -- Write a properties file to the output directory, bool.
* - **compression** -- ZIP deflate compression level, int.
* - **region_shrink** -- Method to shrink regions, VipsRegionShrink.
* - **skip_blanks** -- Skip tiles which are nearly equal to the background, int.
* - **no_strip** -- Don't strip tile metadata, bool.
* - **id** -- Resource ID, const char *.
* - **strip** -- Strip all metadata from image, bool.
* - **background** -- Background value, std::vector<double>.
* - **page_height** -- Set page height for multipage save, int.
*
* @param options Set of options.
* @return Buffer to save to.
*/
VipsBlob *dzsave_buffer( VOption *options = 0 ) const;
/**
* Embed an image in a larger image.
*
* **Optional parameters**
* - **extend** -- How to generate the extra pixels, VipsExtend.
* - **background** -- Color for background pixels, std::vector<double>.
*
* @param x Left edge of input in output.
* @param y Top edge of input in output.
* @param width Image width in pixels.
* @param height Image height in pixels.
* @param options Set of options.
* @return Output image.
*/
VImage embed( int x, int y, int width, int height, VOption *options = 0 ) const;
/**
* Extract an area from an image.
* @param left Left edge of extract area.
* @param top Top edge of extract area.
* @param width Width of extract area.
* @param height Height of extract area.
* @param options Set of options.
* @return Output image.
*/
VImage extract_area( int left, int top, int width, int height, VOption *options = 0 ) const;
/**
* Extract band from an image.
*
* **Optional parameters**
* - **n** -- Number of bands to extract, int.
*
* @param band Band to extract.
* @param options Set of options.
* @return Output image.
*/
VImage extract_band( int band, VOption *options = 0 ) const;
/**
* Make an image showing the eye's spatial response.
*
* **Optional parameters**
* - **uchar** -- Output an unsigned char image, bool.
* - **factor** -- Maximum spatial frequency, double.
*
* @param width Image width in pixels.
* @param height Image height in pixels.
* @param options Set of options.
* @return Output image.
*/
static VImage eye( int width, int height, VOption *options = 0 );
/**
* False-color an image.
* @param options Set of options.
* @return Output image.
*/
VImage falsecolour( VOption *options = 0 ) const;
/**
* Fast correlation.
* @param ref Input reference image.
* @param options Set of options.
* @return Output image.
*/
VImage fastcor( VImage ref, VOption *options = 0 ) const;
/**
* Fill image zeros with nearest non-zero pixel.
* @param options Set of options.
* @return Value of nearest non-zero pixel.
*/
VImage fill_nearest( VOption *options = 0 ) const;
/**
* Search an image for non-edge areas.
*
* **Optional parameters**
* - **threshold** -- Object threshold, double.
* - **background** -- Color for background pixels, std::vector<double>.
*
* @param top Top edge of extract area.
* @param width Width of extract area.
* @param height Height of extract area.
* @param options Set of options.
* @return Left edge of image.
*/
int find_trim( int *top, int *width, int *height, VOption *options = 0 ) const;
/**
* Load a fits image.
*
* **Optional parameters**
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param filename Filename to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage fitsload( const char *filename, VOption *options = 0 );
/**
* Save image to fits file.
*
* **Optional parameters**
* - **strip** -- Strip all metadata from image, bool.
* - **background** -- Background value, std::vector<double>.
* - **page_height** -- Set page height for multipage save, int.
*
* @param filename Filename to save to.
* @param options Set of options.
*/
void fitssave( const char *filename, VOption *options = 0 ) const;
/**
* Flatten alpha out of an image.
*
* **Optional parameters**
* - **background** -- Background value, std::vector<double>.
* - **max_alpha** -- Maximum value of alpha channel, double.
*
* @param options Set of options.
* @return Output image.
*/
VImage flatten( VOption *options = 0 ) const;
/**
* Flip an image.
* @param direction Direction to flip image.
* @param options Set of options.
* @return Output image.
*/
VImage flip( VipsDirection direction, VOption *options = 0 ) const;
/**
* Transform float rgb to radiance coding.
* @param options Set of options.
* @return Output image.
*/
VImage float2rad( VOption *options = 0 ) const;
/**
* Make a fractal surface.
* @param width Image width in pixels.
* @param height Image height in pixels.
* @param fractal_dimension Fractal dimension.
* @param options Set of options.
* @return Output image.
*/
static VImage fractsurf( int width, int height, double fractal_dimension, VOption *options = 0 );
/**
* Frequency-domain filtering.
* @param mask Input mask image.
* @param options Set of options.
* @return Output image.
*/
VImage freqmult( VImage mask, VOption *options = 0 ) const;
/**
* Forward fft.
* @param options Set of options.
* @return Output image.
*/
VImage fwfft( VOption *options = 0 ) const;
/**
* Gamma an image.
*
* **Optional parameters**
* - **exponent** -- Gamma factor, double.
*
* @param options Set of options.
* @return Output image.
*/
VImage gamma( VOption *options = 0 ) const;
/**
* Gaussian blur.
*
* **Optional parameters**
* - **min_ampl** -- Minimum amplitude of Gaussian, double.
* - **precision** -- Convolve with this precision, VipsPrecision.
*
* @param sigma Sigma of Gaussian.
* @param options Set of options.
* @return Output image.
*/
VImage gaussblur( double sigma, VOption *options = 0 ) const;
/**
* Make a gaussian image.
*
* **Optional parameters**
* - **separable** -- Generate separable Gaussian, bool.
* - **integer** -- Generate integer Gaussian, bool.
* - **precision** -- Generate with this precision, VipsPrecision.
*
* @param sigma Sigma of Gaussian.
* @param min_ampl Minimum amplitude of Gaussian.
* @param options Set of options.
* @return Output image.
*/
static VImage gaussmat( double sigma, double min_ampl, VOption *options = 0 );
/**
* Make a gaussnoise image.
*
* **Optional parameters**
* - **sigma** -- Standard deviation of pixels in generated image, double.
* - **mean** -- Mean of pixels in generated image, double.
*
* @param width Image width in pixels.
* @param height Image height in pixels.
* @param options Set of options.
* @return Output image.
*/
static VImage gaussnoise( int width, int height, VOption *options = 0 );
/**
* Read a point from an image.
* @param x Point to read.
* @param y Point to read.
* @param options Set of options.
* @return Array of output values.
*/
std::vector<double> getpoint( int x, int y, VOption *options = 0 ) const;
/**
* Load gif with giflib.
*
* **Optional parameters**
* - **page** -- Load this page from the file, int.
* - **n** -- Load this many pages, int.
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param filename Filename to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage gifload( const char *filename, VOption *options = 0 );
/**
* Load gif with giflib.
*
* **Optional parameters**
* - **page** -- Load this page from the file, int.
* - **n** -- Load this many pages, int.
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param buffer Buffer to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage gifload_buffer( VipsBlob *buffer, VOption *options = 0 );
/**
* Load gif with giflib.
*
* **Optional parameters**
* - **page** -- Load this page from the file, int.
* - **n** -- Load this many pages, int.
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param source Source to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage gifload_source( VSource source, VOption *options = 0 );
/**
* Global balance an image mosaic.
*
* **Optional parameters**
* - **gamma** -- Image gamma, double.
* - **int_output** -- Integer output, bool.
*
* @param options Set of options.
* @return Output image.
*/
VImage globalbalance( VOption *options = 0 ) const;
/**
* Place an image within a larger image with a certain gravity.
*
* **Optional parameters**
* - **extend** -- How to generate the extra pixels, VipsExtend.
* - **background** -- Color for background pixels, std::vector<double>.
*
* @param direction direction to place image within width/height.
* @param width Image width in pixels.
* @param height Image height in pixels.
* @param options Set of options.
* @return Output image.
*/
VImage gravity( VipsCompassDirection direction, int width, int height, VOption *options = 0 ) const;
/**
* Make a grey ramp image.
*
* **Optional parameters**
* - **uchar** -- Output an unsigned char image, bool.
*
* @param width Image width in pixels.
* @param height Image height in pixels.
* @param options Set of options.
* @return Output image.
*/
static VImage grey( int width, int height, VOption *options = 0 );
/**
* Grid an image.
* @param tile_height chop into tiles this high.
* @param across number of tiles across.
* @param down number of tiles down.
* @param options Set of options.
* @return Output image.
*/
VImage grid( int tile_height, int across, int down, VOption *options = 0 ) const;
/**
* Load a heif image.
*
* **Optional parameters**
* - **page** -- Load this page from the file, int.
* - **n** -- Load this many pages, int.
* - **thumbnail** -- Fetch thumbnail image, bool.
* - **autorotate** -- Rotate image using exif orientation, bool.
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param filename Filename to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage heifload( const char *filename, VOption *options = 0 );
/**
* Load a heif image.
*
* **Optional parameters**
* - **page** -- Load this page from the file, int.
* - **n** -- Load this many pages, int.
* - **thumbnail** -- Fetch thumbnail image, bool.
* - **autorotate** -- Rotate image using exif orientation, bool.
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param buffer Buffer to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage heifload_buffer( VipsBlob *buffer, VOption *options = 0 );
/**
* Load a heif image.
*
* **Optional parameters**
* - **page** -- Load this page from the file, int.
* - **n** -- Load this many pages, int.
* - **thumbnail** -- Fetch thumbnail image, bool.
* - **autorotate** -- Rotate image using exif orientation, bool.
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param source Source to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage heifload_source( VSource source, VOption *options = 0 );
/**
* Save image in heif format.
*
* **Optional parameters**
* - **Q** -- Q factor, int.
* - **lossless** -- Enable lossless compression, bool.
* - **compression** -- Compression format, VipsForeignHeifCompression.
* - **strip** -- Strip all metadata from image, bool.
* - **background** -- Background value, std::vector<double>.
* - **page_height** -- Set page height for multipage save, int.
*
* @param filename Filename to load from.
* @param options Set of options.
*/
void heifsave( const char *filename, VOption *options = 0 ) const;
/**
* Save image in heif format.
*
* **Optional parameters**
* - **Q** -- Q factor, int.
* - **lossless** -- Enable lossless compression, bool.
* - **compression** -- Compression format, VipsForeignHeifCompression.
* - **strip** -- Strip all metadata from image, bool.
* - **background** -- Background value, std::vector<double>.
* - **page_height** -- Set page height for multipage save, int.
*
* @param options Set of options.
* @return Buffer to save to.
*/
VipsBlob *heifsave_buffer( VOption *options = 0 ) const;
/**
* Save image in heif format.
*
* **Optional parameters**
* - **Q** -- Q factor, int.
* - **lossless** -- Enable lossless compression, bool.
* - **compression** -- Compression format, VipsForeignHeifCompression.
* - **strip** -- Strip all metadata from image, bool.
* - **background** -- Background value, std::vector<double>.
* - **page_height** -- Set page height for multipage save, int.
*
* @param target Target to save to.
* @param options Set of options.
*/
void heifsave_target( VTarget target, VOption *options = 0 ) const;
/**
* Form cumulative histogram.
* @param options Set of options.
* @return Output image.
*/
VImage hist_cum( VOption *options = 0 ) const;
/**
* Estimate image entropy.
* @param options Set of options.
* @return Output value.
*/
double hist_entropy( VOption *options = 0 ) const;
/**
* Histogram equalisation.
*
* **Optional parameters**
* - **band** -- Equalise with this band, int.
*
* @param options Set of options.
* @return Output image.
*/
VImage hist_equal( VOption *options = 0 ) const;
/**
* Find image histogram.
*
* **Optional parameters**
* - **band** -- Find histogram of band, int.
*
* @param options Set of options.
* @return Output histogram.
*/
VImage hist_find( VOption *options = 0 ) const;
/**
* Find indexed image histogram.
*
* **Optional parameters**
* - **combine** -- Combine bins like this, VipsCombine.
*
* @param index Index image.
* @param options Set of options.
* @return Output histogram.
*/
VImage hist_find_indexed( VImage index, VOption *options = 0 ) const;
/**
* Find n-dimensional image histogram.
*
* **Optional parameters**
* - **bins** -- Number of bins in each dimension, int.
*
* @param options Set of options.
* @return Output histogram.
*/
VImage hist_find_ndim( VOption *options = 0 ) const;
/**
* Test for monotonicity.
* @param options Set of options.
* @return true if in is monotonic.
*/
bool hist_ismonotonic( VOption *options = 0 ) const;
/**
* Local histogram equalisation.
*
* **Optional parameters**
* - **max_slope** -- Maximum slope (CLAHE), int.
*
* @param width Window width in pixels.
* @param height Window height in pixels.
* @param options Set of options.
* @return Output image.
*/
VImage hist_local( int width, int height, VOption *options = 0 ) const;
/**
* Match two histograms.
* @param ref Reference histogram.
* @param options Set of options.
* @return Output image.
*/
VImage hist_match( VImage ref, VOption *options = 0 ) const;
/**
* Normalise histogram.
* @param options Set of options.
* @return Output image.
*/
VImage hist_norm( VOption *options = 0 ) const;
/**
* Plot histogram.
* @param options Set of options.
* @return Output image.
*/
VImage hist_plot( VOption *options = 0 ) const;
/**
* Find hough circle transform.
*
* **Optional parameters**
* - **scale** -- Scale down dimensions by this factor, int.
* - **min_radius** -- Smallest radius to search for, int.
* - **max_radius** -- Largest radius to search for, int.
*
* @param options Set of options.
* @return Output image.
*/
VImage hough_circle( VOption *options = 0 ) const;
/**
* Find hough line transform.
*
* **Optional parameters**
* - **width** -- horizontal size of parameter space, int.
* - **height** -- Vertical size of parameter space, int.
*
* @param options Set of options.
* @return Output image.
*/
VImage hough_line( VOption *options = 0 ) const;
/**
* Output to device with icc profile.
*
* **Optional parameters**
* - **pcs** -- Set Profile Connection Space, VipsPCS.
* - **intent** -- Rendering intent, VipsIntent.
* - **output_profile** -- Filename to load output profile from, const char *.
* - **depth** -- Output device space depth in bits, int.
*
* @param options Set of options.
* @return Output image.
*/
VImage icc_export( VOption *options = 0 ) const;
/**
* Import from device with icc profile.
*
* **Optional parameters**
* - **pcs** -- Set Profile Connection Space, VipsPCS.
* - **intent** -- Rendering intent, VipsIntent.
* - **embedded** -- Use embedded input profile, if available, bool.
* - **input_profile** -- Filename to load input profile from, const char *.
*
* @param options Set of options.
* @return Output image.
*/
VImage icc_import( VOption *options = 0 ) const;
/**
* Transform between devices with icc profiles.
*
* **Optional parameters**
* - **pcs** -- Set Profile Connection Space, VipsPCS.
* - **intent** -- Rendering intent, VipsIntent.
* - **embedded** -- Use embedded input profile, if available, bool.
* - **input_profile** -- Filename to load input profile from, const char *.
* - **depth** -- Output device space depth in bits, int.
*
* @param output_profile Filename to load output profile from.
* @param options Set of options.
* @return Output image.
*/
VImage icc_transform( const char *output_profile, VOption *options = 0 ) const;
/**
* Make a 1d image where pixel values are indexes.
*
* **Optional parameters**
* - **bands** -- Number of bands in LUT, int.
* - **ushort** -- Create a 16-bit LUT, bool.
* - **size** -- Size of 16-bit LUT, int.
*
* @param options Set of options.
* @return Output image.
*/
static VImage identity( VOption *options = 0 );
/**
* Ifthenelse an image.
*
* **Optional parameters**
* - **blend** -- Blend smoothly between then and else parts, bool.
*
* @param in1 Source for TRUE pixels.
* @param in2 Source for FALSE pixels.
* @param options Set of options.
* @return Output image.
*/
VImage ifthenelse( VImage in1, VImage in2, VOption *options = 0 ) const;
/**
* Insert image @sub into @main at @x, @y.
*
* **Optional parameters**
* - **expand** -- Expand output to hold all of both inputs, bool.
* - **background** -- Color for new pixels, std::vector<double>.
*
* @param sub Sub-image to insert into main image.
* @param x Left edge of sub in main.
* @param y Top edge of sub in main.
* @param options Set of options.
* @return Output image.
*/
VImage insert( VImage sub, int x, int y, VOption *options = 0 ) const;
/**
* Invert an image.
* @param options Set of options.
* @return Output image.
*/
VImage invert( VOption *options = 0 ) const;
/**
* Build an inverted look-up table.
*
* **Optional parameters**
* - **size** -- LUT size to generate, int.
*
* @param options Set of options.
* @return Output image.
*/
VImage invertlut( VOption *options = 0 ) const;
/**
* Inverse fft.
*
* **Optional parameters**
* - **real** -- Output only the real part of the transform, bool.
*
* @param options Set of options.
* @return Output image.
*/
VImage invfft( VOption *options = 0 ) const;
/**
* Join a pair of images.
*
* **Optional parameters**
* - **expand** -- Expand output to hold all of both inputs, bool.
* - **shim** -- Pixels between images, int.
* - **background** -- Colour for new pixels, std::vector<double>.
* - **align** -- Align on the low, centre or high coordinate edge, VipsAlign.
*
* @param in2 Second input image.
* @param direction Join left-right or up-down.
* @param options Set of options.
* @return Output image.
*/
VImage join( VImage in2, VipsDirection direction, VOption *options = 0 ) const;
/**
* Load jpeg from file.
*
* **Optional parameters**
* - **shrink** -- Shrink factor on load, int.
* - **autorotate** -- Rotate image using exif orientation, bool.
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param filename Filename to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage jpegload( const char *filename, VOption *options = 0 );
/**
* Load jpeg from buffer.
*
* **Optional parameters**
* - **shrink** -- Shrink factor on load, int.
* - **autorotate** -- Rotate image using exif orientation, bool.
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param buffer Buffer to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage jpegload_buffer( VipsBlob *buffer, VOption *options = 0 );
/**
* Load image from jpeg source.
*
* **Optional parameters**
* - **shrink** -- Shrink factor on load, int.
* - **autorotate** -- Rotate image using exif orientation, bool.
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param source Source to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage jpegload_source( VSource source, VOption *options = 0 );
/**
* Save image to jpeg file.
*
* **Optional parameters**
* - **Q** -- Q factor, int.
* - **profile** -- ICC profile to embed, const char *.
* - **optimize_coding** -- Compute optimal Huffman coding tables, bool.
* - **interlace** -- Generate an interlaced (progressive) jpeg, bool.
* - **no_subsample** -- Disable chroma subsample, bool.
* - **trellis_quant** -- Apply trellis quantisation to each 8x8 block, bool.
* - **overshoot_deringing** -- Apply overshooting to samples with extreme values, bool.
* - **optimize_scans** -- Split spectrum of DCT coefficients into separate scans, bool.
* - **quant_table** -- Use predefined quantization table with given index, int.
* - **subsample_mode** -- Select chroma subsample operation mode, VipsForeignJpegSubsample.
* - **strip** -- Strip all metadata from image, bool.
* - **background** -- Background value, std::vector<double>.
* - **page_height** -- Set page height for multipage save, int.
*
* @param filename Filename to save to.
* @param options Set of options.
*/
void jpegsave( const char *filename, VOption *options = 0 ) const;
/**
* Save image to jpeg buffer.
*
* **Optional parameters**
* - **Q** -- Q factor, int.
* - **profile** -- ICC profile to embed, const char *.
* - **optimize_coding** -- Compute optimal Huffman coding tables, bool.
* - **interlace** -- Generate an interlaced (progressive) jpeg, bool.
* - **no_subsample** -- Disable chroma subsample, bool.
* - **trellis_quant** -- Apply trellis quantisation to each 8x8 block, bool.
* - **overshoot_deringing** -- Apply overshooting to samples with extreme values, bool.
* - **optimize_scans** -- Split spectrum of DCT coefficients into separate scans, bool.
* - **quant_table** -- Use predefined quantization table with given index, int.
* - **subsample_mode** -- Select chroma subsample operation mode, VipsForeignJpegSubsample.
* - **strip** -- Strip all metadata from image, bool.
* - **background** -- Background value, std::vector<double>.
* - **page_height** -- Set page height for multipage save, int.
*
* @param options Set of options.
* @return Buffer to save to.
*/
VipsBlob *jpegsave_buffer( VOption *options = 0 ) const;
/**
* Save image to jpeg mime.
*
* **Optional parameters**
* - **Q** -- Q factor, int.
* - **profile** -- ICC profile to embed, const char *.
* - **optimize_coding** -- Compute optimal Huffman coding tables, bool.
* - **interlace** -- Generate an interlaced (progressive) jpeg, bool.
* - **no_subsample** -- Disable chroma subsample, bool.
* - **trellis_quant** -- Apply trellis quantisation to each 8x8 block, bool.
* - **overshoot_deringing** -- Apply overshooting to samples with extreme values, bool.
* - **optimize_scans** -- Split spectrum of DCT coefficients into separate scans, bool.
* - **quant_table** -- Use predefined quantization table with given index, int.
* - **subsample_mode** -- Select chroma subsample operation mode, VipsForeignJpegSubsample.
* - **strip** -- Strip all metadata from image, bool.
* - **background** -- Background value, std::vector<double>.
* - **page_height** -- Set page height for multipage save, int.
*
* @param options Set of options.
*/
void jpegsave_mime( VOption *options = 0 ) const;
/**
* Save image to jpeg target.
*
* **Optional parameters**
* - **Q** -- Q factor, int.
* - **profile** -- ICC profile to embed, const char *.
* - **optimize_coding** -- Compute optimal Huffman coding tables, bool.
* - **interlace** -- Generate an interlaced (progressive) jpeg, bool.
* - **no_subsample** -- Disable chroma subsample, bool.
* - **trellis_quant** -- Apply trellis quantisation to each 8x8 block, bool.
* - **overshoot_deringing** -- Apply overshooting to samples with extreme values, bool.
* - **optimize_scans** -- Split spectrum of DCT coefficients into separate scans, bool.
* - **quant_table** -- Use predefined quantization table with given index, int.
* - **subsample_mode** -- Select chroma subsample operation mode, VipsForeignJpegSubsample.
* - **strip** -- Strip all metadata from image, bool.
* - **background** -- Background value, std::vector<double>.
* - **page_height** -- Set page height for multipage save, int.
*
* @param target Target to save to.
* @param options Set of options.
*/
void jpegsave_target( VTarget target, VOption *options = 0 ) const;
/**
* Label regions in an image.
* @param options Set of options.
* @return Mask of region labels.
*/
VImage labelregions( VOption *options = 0 ) const;
/**
* Calculate (a * in + b).
*
* **Optional parameters**
* - **uchar** -- Output should be uchar, bool.
*
* @param a Multiply by this.
* @param b Add this.
* @param options Set of options.
* @return Output image.
*/
VImage linear( std::vector<double> a, std::vector<double> b, VOption *options = 0 ) const;
/**
* Cache an image as a set of lines.
*
* **Optional parameters**
* - **tile_height** -- Tile height in pixels, int.
* - **access** -- Expected access pattern, VipsAccess.
* - **threaded** -- Allow threaded access, bool.
* - **persistent** -- Keep cache between evaluations, bool.
*
* @param options Set of options.
* @return Output image.
*/
VImage linecache( VOption *options = 0 ) const;
/**
* Make a laplacian of gaussian image.
*
* **Optional parameters**
* - **separable** -- Generate separable Logmatian, bool.
* - **integer** -- Generate integer Logmatian, bool.
* - **precision** -- Generate with this precision, VipsPrecision.
*
* @param sigma Radius of Logmatian.
* @param min_ampl Minimum amplitude of Logmatian.
* @param options Set of options.
* @return Output image.
*/
static VImage logmat( double sigma, double min_ampl, VOption *options = 0 );
/**
* Load file with imagemagick.
*
* **Optional parameters**
* - **all_frames** -- Read all frames from an image, bool.
* - **density** -- Canvas resolution for rendering vector formats like SVG, const char *.
* - **page** -- Load this page from the file, int.
* - **n** -- Load this many pages, int.
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param filename Filename to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage magickload( const char *filename, VOption *options = 0 );
/**
* Load buffer with imagemagick.
*
* **Optional parameters**
* - **all_frames** -- Read all frames from an image, bool.
* - **density** -- Canvas resolution for rendering vector formats like SVG, const char *.
* - **page** -- Load this page from the file, int.
* - **n** -- Load this many pages, int.
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param buffer Buffer to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage magickload_buffer( VipsBlob *buffer, VOption *options = 0 );
/**
* Save file with imagemagick.
*
* **Optional parameters**
* - **format** -- Format to save in, const char *.
* - **quality** -- Quality to use, int.
* - **optimize_gif_frames** -- Apply GIF frames optimization, bool.
* - **optimize_gif_transparency** -- Apply GIF transparency optimization, bool.
* - **strip** -- Strip all metadata from image, bool.
* - **background** -- Background value, std::vector<double>.
* - **page_height** -- Set page height for multipage save, int.
*
* @param filename Filename to save to.
* @param options Set of options.
*/
void magicksave( const char *filename, VOption *options = 0 ) const;
/**
* Save image to magick buffer.
*
* **Optional parameters**
* - **format** -- Format to save in, const char *.
* - **quality** -- Quality to use, int.
* - **optimize_gif_frames** -- Apply GIF frames optimization, bool.
* - **optimize_gif_transparency** -- Apply GIF transparency optimization, bool.
* - **strip** -- Strip all metadata from image, bool.
* - **background** -- Background value, std::vector<double>.
* - **page_height** -- Set page height for multipage save, int.
*
* @param options Set of options.
* @return Buffer to save to.
*/
VipsBlob *magicksave_buffer( VOption *options = 0 ) const;
/**
* Resample with a map image.
*
* **Optional parameters**
* - **interpolate** -- Interpolate pixels with this, VInterpolate.
*
* @param index Index pixels with this.
* @param options Set of options.
* @return Output image.
*/
VImage mapim( VImage index, VOption *options = 0 ) const;
/**
* Map an image though a lut.
*
* **Optional parameters**
* - **band** -- apply one-band lut to this band of in, int.
*
* @param lut Look-up table image.
* @param options Set of options.
* @return Output image.
*/
VImage maplut( VImage lut, VOption *options = 0 ) const;
/**
* Make a butterworth filter.
*
* **Optional parameters**
* - **uchar** -- Output an unsigned char image, bool.
* - **nodc** -- Remove DC component, bool.
* - **reject** -- Invert the sense of the filter, bool.
* - **optical** -- Rotate quadrants to optical space, bool.
*
* @param width Image width in pixels.
* @param height Image height in pixels.
* @param order Filter order.
* @param frequency_cutoff Frequency cutoff.
* @param amplitude_cutoff Amplitude cutoff.
* @param options Set of options.
* @return Output image.
*/
static VImage mask_butterworth( int width, int height, double order, double frequency_cutoff, double amplitude_cutoff, VOption *options = 0 );
/**
* Make a butterworth_band filter.
*
* **Optional parameters**
* - **uchar** -- Output an unsigned char image, bool.
* - **nodc** -- Remove DC component, bool.
* - **reject** -- Invert the sense of the filter, bool.
* - **optical** -- Rotate quadrants to optical space, bool.
*
* @param width Image width in pixels.
* @param height Image height in pixels.
* @param order Filter order.
* @param frequency_cutoff_x Frequency cutoff x.
* @param frequency_cutoff_y Frequency cutoff y.
* @param radius radius of circle.
* @param amplitude_cutoff Amplitude cutoff.
* @param options Set of options.
* @return Output image.
*/
static VImage mask_butterworth_band( int width, int height, double order, double frequency_cutoff_x, double frequency_cutoff_y, double radius, double amplitude_cutoff, VOption *options = 0 );
/**
* Make a butterworth ring filter.
*
* **Optional parameters**
* - **uchar** -- Output an unsigned char image, bool.
* - **nodc** -- Remove DC component, bool.
* - **reject** -- Invert the sense of the filter, bool.
* - **optical** -- Rotate quadrants to optical space, bool.
*
* @param width Image width in pixels.
* @param height Image height in pixels.
* @param order Filter order.
* @param frequency_cutoff Frequency cutoff.
* @param amplitude_cutoff Amplitude cutoff.
* @param ringwidth Ringwidth.
* @param options Set of options.
* @return Output image.
*/
static VImage mask_butterworth_ring( int width, int height, double order, double frequency_cutoff, double amplitude_cutoff, double ringwidth, VOption *options = 0 );
/**
* Make fractal filter.
*
* **Optional parameters**
* - **uchar** -- Output an unsigned char image, bool.
* - **nodc** -- Remove DC component, bool.
* - **reject** -- Invert the sense of the filter, bool.
* - **optical** -- Rotate quadrants to optical space, bool.
*
* @param width Image width in pixels.
* @param height Image height in pixels.
* @param fractal_dimension Fractal dimension.
* @param options Set of options.
* @return Output image.
*/
static VImage mask_fractal( int width, int height, double fractal_dimension, VOption *options = 0 );
/**
* Make a gaussian filter.
*
* **Optional parameters**
* - **uchar** -- Output an unsigned char image, bool.
* - **nodc** -- Remove DC component, bool.
* - **reject** -- Invert the sense of the filter, bool.
* - **optical** -- Rotate quadrants to optical space, bool.
*
* @param width Image width in pixels.
* @param height Image height in pixels.
* @param frequency_cutoff Frequency cutoff.
* @param amplitude_cutoff Amplitude cutoff.
* @param options Set of options.
* @return Output image.
*/
static VImage mask_gaussian( int width, int height, double frequency_cutoff, double amplitude_cutoff, VOption *options = 0 );
/**
* Make a gaussian filter.
*
* **Optional parameters**
* - **uchar** -- Output an unsigned char image, bool.
* - **nodc** -- Remove DC component, bool.
* - **reject** -- Invert the sense of the filter, bool.
* - **optical** -- Rotate quadrants to optical space, bool.
*
* @param width Image width in pixels.
* @param height Image height in pixels.
* @param frequency_cutoff_x Frequency cutoff x.
* @param frequency_cutoff_y Frequency cutoff y.
* @param radius radius of circle.
* @param amplitude_cutoff Amplitude cutoff.
* @param options Set of options.
* @return Output image.
*/
static VImage mask_gaussian_band( int width, int height, double frequency_cutoff_x, double frequency_cutoff_y, double radius, double amplitude_cutoff, VOption *options = 0 );
/**
* Make a gaussian ring filter.
*
* **Optional parameters**
* - **uchar** -- Output an unsigned char image, bool.
* - **nodc** -- Remove DC component, bool.
* - **reject** -- Invert the sense of the filter, bool.
* - **optical** -- Rotate quadrants to optical space, bool.
*
* @param width Image width in pixels.
* @param height Image height in pixels.
* @param frequency_cutoff Frequency cutoff.
* @param amplitude_cutoff Amplitude cutoff.
* @param ringwidth Ringwidth.
* @param options Set of options.
* @return Output image.
*/
static VImage mask_gaussian_ring( int width, int height, double frequency_cutoff, double amplitude_cutoff, double ringwidth, VOption *options = 0 );
/**
* Make an ideal filter.
*
* **Optional parameters**
* - **uchar** -- Output an unsigned char image, bool.
* - **nodc** -- Remove DC component, bool.
* - **reject** -- Invert the sense of the filter, bool.
* - **optical** -- Rotate quadrants to optical space, bool.
*
* @param width Image width in pixels.
* @param height Image height in pixels.
* @param frequency_cutoff Frequency cutoff.
* @param options Set of options.
* @return Output image.
*/
static VImage mask_ideal( int width, int height, double frequency_cutoff, VOption *options = 0 );
/**
* Make an ideal band filter.
*
* **Optional parameters**
* - **uchar** -- Output an unsigned char image, bool.
* - **nodc** -- Remove DC component, bool.
* - **reject** -- Invert the sense of the filter, bool.
* - **optical** -- Rotate quadrants to optical space, bool.
*
* @param width Image width in pixels.
* @param height Image height in pixels.
* @param frequency_cutoff_x Frequency cutoff x.
* @param frequency_cutoff_y Frequency cutoff y.
* @param radius radius of circle.
* @param options Set of options.
* @return Output image.
*/
static VImage mask_ideal_band( int width, int height, double frequency_cutoff_x, double frequency_cutoff_y, double radius, VOption *options = 0 );
/**
* Make an ideal ring filter.
*
* **Optional parameters**
* - **uchar** -- Output an unsigned char image, bool.
* - **nodc** -- Remove DC component, bool.
* - **reject** -- Invert the sense of the filter, bool.
* - **optical** -- Rotate quadrants to optical space, bool.
*
* @param width Image width in pixels.
* @param height Image height in pixels.
* @param frequency_cutoff Frequency cutoff.
* @param ringwidth Ringwidth.
* @param options Set of options.
* @return Output image.
*/
static VImage mask_ideal_ring( int width, int height, double frequency_cutoff, double ringwidth, VOption *options = 0 );
/**
* First-order match of two images.
*
* **Optional parameters**
* - **hwindow** -- Half window size, int.
* - **harea** -- Half area size, int.
* - **search** -- Search to improve tie-points, bool.
* - **interpolate** -- Interpolate pixels with this, VInterpolate.
*
* @param sec Secondary image.
* @param xr1 Position of first reference tie-point.
* @param yr1 Position of first reference tie-point.
* @param xs1 Position of first secondary tie-point.
* @param ys1 Position of first secondary tie-point.
* @param xr2 Position of second reference tie-point.
* @param yr2 Position of second reference tie-point.
* @param xs2 Position of second secondary tie-point.
* @param ys2 Position of second secondary tie-point.
* @param options Set of options.
* @return Output image.
*/
VImage match( VImage sec, int xr1, int yr1, int xs1, int ys1, int xr2, int yr2, int xs2, int ys2, VOption *options = 0 ) const;
/**
* Apply a math operation to an image.
* @param math math to perform.
* @param options Set of options.
* @return Output image.
*/
VImage math( VipsOperationMath math, VOption *options = 0 ) const;
/**
* Binary math operations.
* @param right Right-hand image argument.
* @param math2 math to perform.
* @param options Set of options.
* @return Output image.
*/
VImage math2( VImage right, VipsOperationMath2 math2, VOption *options = 0 ) const;
/**
* Binary math operations with a constant.
* @param math2 math to perform.
* @param c Array of constants.
* @param options Set of options.
* @return Output image.
*/
VImage math2_const( VipsOperationMath2 math2, std::vector<double> c, VOption *options = 0 ) const;
/**
* Load mat from file.
*
* **Optional parameters**
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param filename Filename to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage matload( const char *filename, VOption *options = 0 );
/**
* Invert an matrix.
* @param options Set of options.
* @return Output matrix.
*/
VImage matrixinvert( VOption *options = 0 ) const;
/**
* Load matrix.
*
* **Optional parameters**
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param filename Filename to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage matrixload( const char *filename, VOption *options = 0 );
/**
* Load matrix.
*
* **Optional parameters**
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param source Source to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage matrixload_source( VSource source, VOption *options = 0 );
/**
* Print matrix.
*
* **Optional parameters**
* - **strip** -- Strip all metadata from image, bool.
* - **background** -- Background value, std::vector<double>.
* - **page_height** -- Set page height for multipage save, int.
*
* @param options Set of options.
*/
void matrixprint( VOption *options = 0 ) const;
/**
* Save image to matrix.
*
* **Optional parameters**
* - **strip** -- Strip all metadata from image, bool.
* - **background** -- Background value, std::vector<double>.
* - **page_height** -- Set page height for multipage save, int.
*
* @param filename Filename to save to.
* @param options Set of options.
*/
void matrixsave( const char *filename, VOption *options = 0 ) const;
/**
* Save image to matrix.
*
* **Optional parameters**
* - **strip** -- Strip all metadata from image, bool.
* - **background** -- Background value, std::vector<double>.
* - **page_height** -- Set page height for multipage save, int.
*
* @param target Target to save to.
* @param options Set of options.
*/
void matrixsave_target( VTarget target, VOption *options = 0 ) const;
/**
* Find image maximum.
*
* **Optional parameters**
* - **size** -- Number of maximum values to find, int.
*
* @param options Set of options.
* @return Output value.
*/
double max( VOption *options = 0 ) const;
/**
* Measure a set of patches on a color chart.
*
* **Optional parameters**
* - **left** -- Left edge of extract area, int.
* - **top** -- Top edge of extract area, int.
* - **width** -- Width of extract area, int.
* - **height** -- Height of extract area, int.
*
* @param h Number of patches across chart.
* @param v Number of patches down chart.
* @param options Set of options.
* @return Output array of statistics.
*/
VImage measure( int h, int v, VOption *options = 0 ) const;
/**
* Merge two images.
*
* **Optional parameters**
* - **mblend** -- Maximum blend size, int.
*
* @param sec Secondary image.
* @param direction Horizontal or vertical merge.
* @param dx Horizontal displacement from sec to ref.
* @param dy Vertical displacement from sec to ref.
* @param options Set of options.
* @return Output image.
*/
VImage merge( VImage sec, VipsDirection direction, int dx, int dy, VOption *options = 0 ) const;
/**
* Find image minimum.
*
* **Optional parameters**
* - **size** -- Number of minimum values to find, int.
*
* @param options Set of options.
* @return Output value.
*/
double min( VOption *options = 0 ) const;
/**
* Morphology operation.
* @param mask Input matrix image.
* @param morph Morphological operation to perform.
* @param options Set of options.
* @return Output image.
*/
VImage morph( VImage mask, VipsOperationMorphology morph, VOption *options = 0 ) const;
/**
* Mosaic two images.
*
* **Optional parameters**
* - **hwindow** -- Half window size, int.
* - **harea** -- Half area size, int.
* - **mblend** -- Maximum blend size, int.
* - **bandno** -- Band to search for features on, int.
*
* @param sec Secondary image.
* @param direction Horizontal or vertical mosaic.
* @param xref Position of reference tie-point.
* @param yref Position of reference tie-point.
* @param xsec Position of secondary tie-point.
* @param ysec Position of secondary tie-point.
* @param options Set of options.
* @return Output image.
*/
VImage mosaic( VImage sec, VipsDirection direction, int xref, int yref, int xsec, int ysec, VOption *options = 0 ) const;
/**
* First-order mosaic of two images.
*
* **Optional parameters**
* - **hwindow** -- Half window size, int.
* - **harea** -- Half area size, int.
* - **search** -- Search to improve tie-points, bool.
* - **interpolate** -- Interpolate pixels with this, VInterpolate.
* - **mblend** -- Maximum blend size, int.
* - **bandno** -- Band to search for features on, int.
*
* @param sec Secondary image.
* @param direction Horizontal or vertical mosaic.
* @param xr1 Position of first reference tie-point.
* @param yr1 Position of first reference tie-point.
* @param xs1 Position of first secondary tie-point.
* @param ys1 Position of first secondary tie-point.
* @param xr2 Position of second reference tie-point.
* @param yr2 Position of second reference tie-point.
* @param xs2 Position of second secondary tie-point.
* @param ys2 Position of second secondary tie-point.
* @param options Set of options.
* @return Output image.
*/
VImage mosaic1( VImage sec, VipsDirection direction, int xr1, int yr1, int xs1, int ys1, int xr2, int yr2, int xs2, int ys2, VOption *options = 0 ) const;
/**
* Pick most-significant byte from an image.
*
* **Optional parameters**
* - **band** -- Band to msb, int.
*
* @param options Set of options.
* @return Output image.
*/
VImage msb( VOption *options = 0 ) const;
/**
* Multiply two images.
* @param right Right-hand image argument.
* @param options Set of options.
* @return Output image.
*/
VImage multiply( VImage right, VOption *options = 0 ) const;
/**
* Load a nifti image.
*
* **Optional parameters**
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param filename Filename to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage niftiload( const char *filename, VOption *options = 0 );
/**
* Save image to nifti file.
*
* **Optional parameters**
* - **strip** -- Strip all metadata from image, bool.
* - **background** -- Background value, std::vector<double>.
* - **page_height** -- Set page height for multipage save, int.
*
* @param filename Filename to save to.
* @param options Set of options.
*/
void niftisave( const char *filename, VOption *options = 0 ) const;
/**
* Load an openexr image.
*
* **Optional parameters**
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param filename Filename to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage openexrload( const char *filename, VOption *options = 0 );
/**
* Load file with openslide.
*
* **Optional parameters**
* - **attach_associated** -- Attach all asssociated images, bool.
* - **level** -- Load this level from the file, int.
* - **autocrop** -- Crop to image bounds, bool.
* - **associated** -- Load this associated image, const char *.
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param filename Filename to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage openslideload( const char *filename, VOption *options = 0 );
/**
* Load pdf from file.
*
* **Optional parameters**
* - **page** -- Load this page from the file, int.
* - **n** -- Load this many pages, int.
* - **dpi** -- Render at this DPI, double.
* - **scale** -- Scale output by this factor, double.
* - **background** -- Background value, std::vector<double>.
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param filename Filename to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage pdfload( const char *filename, VOption *options = 0 );
/**
* Load pdf from buffer.
*
* **Optional parameters**
* - **page** -- Load this page from the file, int.
* - **n** -- Load this many pages, int.
* - **dpi** -- Render at this DPI, double.
* - **scale** -- Scale output by this factor, double.
* - **background** -- Background value, std::vector<double>.
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param buffer Buffer to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage pdfload_buffer( VipsBlob *buffer, VOption *options = 0 );
/**
* Load pdf from source.
*
* **Optional parameters**
* - **page** -- Load this page from the file, int.
* - **n** -- Load this many pages, int.
* - **dpi** -- Render at this DPI, double.
* - **scale** -- Scale output by this factor, double.
* - **background** -- Background value, std::vector<double>.
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param source Source to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage pdfload_source( VSource source, VOption *options = 0 );
/**
* Find threshold for percent of pixels.
* @param percent Percent of pixels.
* @param options Set of options.
* @return Threshold above which lie percent of pixels.
*/
int percent( double percent, VOption *options = 0 ) const;
/**
* Make a perlin noise image.
*
* **Optional parameters**
* - **cell_size** -- Size of Perlin cells, int.
* - **uchar** -- Output an unsigned char image, bool.
*
* @param width Image width in pixels.
* @param height Image height in pixels.
* @param options Set of options.
* @return Output image.
*/
static VImage perlin( int width, int height, VOption *options = 0 );
/**
* Calculate phase correlation.
* @param in2 Second input image.
* @param options Set of options.
* @return Output image.
*/
VImage phasecor( VImage in2, VOption *options = 0 ) const;
/**
* Load png from file.
*
* **Optional parameters**
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param filename Filename to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage pngload( const char *filename, VOption *options = 0 );
/**
* Load png from buffer.
*
* **Optional parameters**
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param buffer Buffer to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage pngload_buffer( VipsBlob *buffer, VOption *options = 0 );
/**
* Load png from source.
*
* **Optional parameters**
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param source Source to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage pngload_source( VSource source, VOption *options = 0 );
/**
* Save image to png file.
*
* **Optional parameters**
* - **compression** -- Compression factor, int.
* - **interlace** -- Interlace image, bool.
* - **profile** -- ICC profile to embed, const char *.
* - **filter** -- libpng row filter flag(s), int.
* - **palette** -- Quantise to 8bpp palette, bool.
* - **colours** -- Max number of palette colours, int.
* - **Q** -- Quantisation quality, int.
* - **dither** -- Amount of dithering, double.
* - **bitdepth** -- Write as a 1, 2, 4 or 8 bit image, int.
* - **strip** -- Strip all metadata from image, bool.
* - **background** -- Background value, std::vector<double>.
* - **page_height** -- Set page height for multipage save, int.
*
* @param filename Filename to save to.
* @param options Set of options.
*/
void pngsave( const char *filename, VOption *options = 0 ) const;
/**
* Save image to png buffer.
*
* **Optional parameters**
* - **compression** -- Compression factor, int.
* - **interlace** -- Interlace image, bool.
* - **profile** -- ICC profile to embed, const char *.
* - **filter** -- libpng row filter flag(s), int.
* - **palette** -- Quantise to 8bpp palette, bool.
* - **colours** -- Max number of palette colours, int.
* - **Q** -- Quantisation quality, int.
* - **dither** -- Amount of dithering, double.
* - **bitdepth** -- Write as a 1, 2, 4 or 8 bit image, int.
* - **strip** -- Strip all metadata from image, bool.
* - **background** -- Background value, std::vector<double>.
* - **page_height** -- Set page height for multipage save, int.
*
* @param options Set of options.
* @return Buffer to save to.
*/
VipsBlob *pngsave_buffer( VOption *options = 0 ) const;
/**
* Save image to target as png.
*
* **Optional parameters**
* - **compression** -- Compression factor, int.
* - **interlace** -- Interlace image, bool.
* - **profile** -- ICC profile to embed, const char *.
* - **filter** -- libpng row filter flag(s), int.
* - **palette** -- Quantise to 8bpp palette, bool.
* - **colours** -- Max number of palette colours, int.
* - **Q** -- Quantisation quality, int.
* - **dither** -- Amount of dithering, double.
* - **bitdepth** -- Write as a 1, 2, 4 or 8 bit image, int.
* - **strip** -- Strip all metadata from image, bool.
* - **background** -- Background value, std::vector<double>.
* - **page_height** -- Set page height for multipage save, int.
*
* @param target Target to save to.
* @param options Set of options.
*/
void pngsave_target( VTarget target, VOption *options = 0 ) const;
/**
* Load ppm from file.
*
* **Optional parameters**
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param filename Filename to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage ppmload( const char *filename, VOption *options = 0 );
/**
* Load ppm base class.
*
* **Optional parameters**
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param source Source to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage ppmload_source( VSource source, VOption *options = 0 );
/**
* Save image to ppm file.
*
* **Optional parameters**
* - **ascii** -- save as ascii, bool.
* - **squash** -- save as one bit, bool.
* - **bitdepth** -- Write as a 1 bit image, int.
* - **strip** -- Strip all metadata from image, bool.
* - **background** -- Background value, std::vector<double>.
* - **page_height** -- Set page height for multipage save, int.
*
* @param filename Filename to save to.
* @param options Set of options.
*/
void ppmsave( const char *filename, VOption *options = 0 ) const;
/**
* Save to ppm.
*
* **Optional parameters**
* - **ascii** -- save as ascii, bool.
* - **squash** -- save as one bit, bool.
* - **bitdepth** -- Write as a 1 bit image, int.
* - **strip** -- Strip all metadata from image, bool.
* - **background** -- Background value, std::vector<double>.
* - **page_height** -- Set page height for multipage save, int.
*
* @param target Target to save to.
* @param options Set of options.
*/
void ppmsave_target( VTarget target, VOption *options = 0 ) const;
/**
* Premultiply image alpha.
*
* **Optional parameters**
* - **max_alpha** -- Maximum value of alpha channel, double.
*
* @param options Set of options.
* @return Output image.
*/
VImage premultiply( VOption *options = 0 ) const;
/**
* Find image profiles.
* @param rows First non-zero pixel in row.
* @param options Set of options.
* @return First non-zero pixel in column.
*/
VImage profile( VImage *rows, VOption *options = 0 ) const;
/**
* Load named icc profile.
* @param name Profile name.
* @param options Set of options.
* @return Loaded profile.
*/
static VipsBlob *profile_load( const char *name, VOption *options = 0 );
/**
* Find image projections.
* @param rows Sums of rows.
* @param options Set of options.
* @return Sums of columns.
*/
VImage project( VImage *rows, VOption *options = 0 ) const;
/**
* Resample an image with a quadratic transform.
*
* **Optional parameters**
* - **interpolate** -- Interpolate values with this, VInterpolate.
*
* @param coeff Coefficient matrix.
* @param options Set of options.
* @return Output image.
*/
VImage quadratic( VImage coeff, VOption *options = 0 ) const;
/**
* Unpack radiance coding to float rgb.
* @param options Set of options.
* @return Output image.
*/
VImage rad2float( VOption *options = 0 ) const;
/**
* Load a radiance image from a file.
*
* **Optional parameters**
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param filename Filename to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage radload( const char *filename, VOption *options = 0 );
/**
* Load rad from buffer.
*
* **Optional parameters**
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param buffer Buffer to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage radload_buffer( VipsBlob *buffer, VOption *options = 0 );
/**
* Load rad from source.
*
* **Optional parameters**
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param source Source to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage radload_source( VSource source, VOption *options = 0 );
/**
* Save image to radiance file.
*
* **Optional parameters**
* - **strip** -- Strip all metadata from image, bool.
* - **background** -- Background value, std::vector<double>.
* - **page_height** -- Set page height for multipage save, int.
*
* @param filename Filename to save to.
* @param options Set of options.
*/
void radsave( const char *filename, VOption *options = 0 ) const;
/**
* Save image to radiance buffer.
*
* **Optional parameters**
* - **strip** -- Strip all metadata from image, bool.
* - **background** -- Background value, std::vector<double>.
* - **page_height** -- Set page height for multipage save, int.
*
* @param options Set of options.
* @return Buffer to save to.
*/
VipsBlob *radsave_buffer( VOption *options = 0 ) const;
/**
* Save image to radiance target.
*
* **Optional parameters**
* - **strip** -- Strip all metadata from image, bool.
* - **background** -- Background value, std::vector<double>.
* - **page_height** -- Set page height for multipage save, int.
*
* @param target Target to save to.
* @param options Set of options.
*/
void radsave_target( VTarget target, VOption *options = 0 ) const;
/**
* Rank filter.
* @param width Window width in pixels.
* @param height Window height in pixels.
* @param index Select pixel at index.
* @param options Set of options.
* @return Output image.
*/
VImage rank( int width, int height, int index, VOption *options = 0 ) const;
/**
* Load raw data from a file.
*
* **Optional parameters**
* - **offset** -- Offset in bytes from start of file, guint64.
* - **format** -- Pixel format in image, VipsBandFormat.
* - **interpretation** -- Pixel interpretation, VipsInterpretation.
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param filename Filename to load from.
* @param width Image width in pixels.
* @param height Image height in pixels.
* @param bands Number of bands in image.
* @param options Set of options.
* @return Output image.
*/
static VImage rawload( const char *filename, int width, int height, int bands, VOption *options = 0 );
/**
* Save image to raw file.
*
* **Optional parameters**
* - **strip** -- Strip all metadata from image, bool.
* - **background** -- Background value, std::vector<double>.
* - **page_height** -- Set page height for multipage save, int.
*
* @param filename Filename to save to.
* @param options Set of options.
*/
void rawsave( const char *filename, VOption *options = 0 ) const;
/**
* Write raw image to file descriptor.
*
* **Optional parameters**
* - **strip** -- Strip all metadata from image, bool.
* - **background** -- Background value, std::vector<double>.
* - **page_height** -- Set page height for multipage save, int.
*
* @param fd File descriptor to write to.
* @param options Set of options.
*/
void rawsave_fd( int fd, VOption *options = 0 ) const;
/**
* Linear recombination with matrix.
* @param m matrix of coefficients.
* @param options Set of options.
* @return Output image.
*/
VImage recomb( VImage m, VOption *options = 0 ) const;
/**
* Reduce an image.
*
* **Optional parameters**
* - **kernel** -- Resampling kernel, VipsKernel.
* - **centre** -- Use centre sampling convention, bool.
*
* @param hshrink Horizontal shrink factor.
* @param vshrink Vertical shrink factor.
* @param options Set of options.
* @return Output image.
*/
VImage reduce( double hshrink, double vshrink, VOption *options = 0 ) const;
/**
* Shrink an image horizontally.
*
* **Optional parameters**
* - **kernel** -- Resampling kernel, VipsKernel.
* - **centre** -- Use centre sampling convention, bool.
*
* @param hshrink Horizontal shrink factor.
* @param options Set of options.
* @return Output image.
*/
VImage reduceh( double hshrink, VOption *options = 0 ) const;
/**
* Shrink an image vertically.
*
* **Optional parameters**
* - **kernel** -- Resampling kernel, VipsKernel.
* - **centre** -- Use centre sampling convention, bool.
*
* @param vshrink Vertical shrink factor.
* @param options Set of options.
* @return Output image.
*/
VImage reducev( double vshrink, VOption *options = 0 ) const;
/**
* Relational operation on two images.
* @param right Right-hand image argument.
* @param relational relational to perform.
* @param options Set of options.
* @return Output image.
*/
VImage relational( VImage right, VipsOperationRelational relational, VOption *options = 0 ) const;
/**
* Relational operations against a constant.
* @param relational relational to perform.
* @param c Array of constants.
* @param options Set of options.
* @return Output image.
*/
VImage relational_const( VipsOperationRelational relational, std::vector<double> c, VOption *options = 0 ) const;
/**
* Remainder after integer division of two images.
* @param right Right-hand image argument.
* @param options Set of options.
* @return Output image.
*/
VImage remainder( VImage right, VOption *options = 0 ) const;
/**
* Remainder after integer division of an image and a constant.
* @param c Array of constants.
* @param options Set of options.
* @return Output image.
*/
VImage remainder_const( std::vector<double> c, VOption *options = 0 ) const;
/**
* Replicate an image.
* @param across Repeat this many times horizontally.
* @param down Repeat this many times vertically.
* @param options Set of options.
* @return Output image.
*/
VImage replicate( int across, int down, VOption *options = 0 ) const;
/**
* Resize an image.
*
* **Optional parameters**
* - **interpolate** -- Interpolate pixels with this, VInterpolate.
* - **kernel** -- Resampling kernel, VipsKernel.
* - **centre** -- Use centre sampling convention, bool.
* - **vscale** -- Vertical scale image by this factor, double.
* - **idx** -- Horizontal input displacement, double.
* - **idy** -- Vertical input displacement, double.
*
* @param scale Scale image by this factor.
* @param options Set of options.
* @return Output image.
*/
VImage resize( double scale, VOption *options = 0 ) const;
/**
* Rotate an image.
* @param angle Angle to rotate image.
* @param options Set of options.
* @return Output image.
*/
VImage rot( VipsAngle angle, VOption *options = 0 ) const;
/**
* Rotate an image.
*
* **Optional parameters**
* - **angle** -- Angle to rotate image, VipsAngle45.
*
* @param options Set of options.
* @return Output image.
*/
VImage rot45( VOption *options = 0 ) const;
/**
* Rotate an image by a number of degrees.
*
* **Optional parameters**
* - **interpolate** -- Interpolate pixels with this, VInterpolate.
* - **background** -- Background value, std::vector<double>.
* - **odx** -- Horizontal output displacement, double.
* - **ody** -- Vertical output displacement, double.
* - **idx** -- Horizontal input displacement, double.
* - **idy** -- Vertical input displacement, double.
*
* @param angle Rotate anticlockwise by this many degrees.
* @param options Set of options.
* @return Output image.
*/
VImage rotate( double angle, VOption *options = 0 ) const;
/**
* Perform a round function on an image.
* @param round rounding operation to perform.
* @param options Set of options.
* @return Output image.
*/
VImage round( VipsOperationRound round, VOption *options = 0 ) const;
/**
* Transform srgb to hsv.
* @param options Set of options.
* @return Output image.
*/
VImage sRGB2HSV( VOption *options = 0 ) const;
/**
* Convert an srgb image to scrgb.
* @param options Set of options.
* @return Output image.
*/
VImage sRGB2scRGB( VOption *options = 0 ) const;
/**
* Convert scrgb to bw.
*
* **Optional parameters**
* - **depth** -- Output device space depth in bits, int.
*
* @param options Set of options.
* @return Output image.
*/
VImage scRGB2BW( VOption *options = 0 ) const;
/**
* Transform scrgb to xyz.
* @param options Set of options.
* @return Output image.
*/
VImage scRGB2XYZ( VOption *options = 0 ) const;
/**
* Convert an scrgb image to srgb.
*
* **Optional parameters**
* - **depth** -- Output device space depth in bits, int.
*
* @param options Set of options.
* @return Output image.
*/
VImage scRGB2sRGB( VOption *options = 0 ) const;
/**
* Scale an image to uchar.
*
* **Optional parameters**
* - **exp** -- Exponent for log scale, double.
* - **log** -- Log scale, bool.
*
* @param options Set of options.
* @return Output image.
*/
VImage scale( VOption *options = 0 ) const;
/**
* Check sequential access.
*
* **Optional parameters**
* - **trace** -- trace pixel requests, bool.
* - **tile_height** -- Tile height in pixels, int.
* - **access** -- Expected access pattern, VipsAccess.
*
* @param options Set of options.
* @return Output image.
*/
VImage sequential( VOption *options = 0 ) const;
/**
* Unsharp masking for print.
*
* **Optional parameters**
* - **radius** -- radius of Gaussian, int.
* - **sigma** -- Sigma of Gaussian, double.
* - **x1** -- Flat/jaggy threshold, double.
* - **y2** -- Maximum brightening, double.
* - **y3** -- Maximum darkening, double.
* - **m1** -- Slope for flat areas, double.
* - **m2** -- Slope for jaggy areas, double.
*
* @param options Set of options.
* @return Output image.
*/
VImage sharpen( VOption *options = 0 ) const;
/**
* Shrink an image.
* @param hshrink Horizontal shrink factor.
* @param vshrink Vertical shrink factor.
* @param options Set of options.
* @return Output image.
*/
VImage shrink( double hshrink, double vshrink, VOption *options = 0 ) const;
/**
* Shrink an image horizontally.
* @param hshrink Horizontal shrink factor.
* @param options Set of options.
* @return Output image.
*/
VImage shrinkh( int hshrink, VOption *options = 0 ) const;
/**
* Shrink an image vertically.
* @param vshrink Vertical shrink factor.
* @param options Set of options.
* @return Output image.
*/
VImage shrinkv( int vshrink, VOption *options = 0 ) const;
/**
* Unit vector of pixel.
* @param options Set of options.
* @return Output image.
*/
VImage sign( VOption *options = 0 ) const;
/**
* Similarity transform of an image.
*
* **Optional parameters**
* - **scale** -- Scale by this factor, double.
* - **angle** -- Rotate anticlockwise by this many degrees, double.
* - **interpolate** -- Interpolate pixels with this, VInterpolate.
* - **background** -- Background value, std::vector<double>.
* - **odx** -- Horizontal output displacement, double.
* - **ody** -- Vertical output displacement, double.
* - **idx** -- Horizontal input displacement, double.
* - **idy** -- Vertical input displacement, double.
*
* @param options Set of options.
* @return Output image.
*/
VImage similarity( VOption *options = 0 ) const;
/**
* Make a 2d sine wave.
*
* **Optional parameters**
* - **uchar** -- Output an unsigned char image, bool.
* - **hfreq** -- Horizontal spatial frequency, double.
* - **vfreq** -- Vertical spatial frequency, double.
*
* @param width Image width in pixels.
* @param height Image height in pixels.
* @param options Set of options.
* @return Output image.
*/
static VImage sines( int width, int height, VOption *options = 0 );
/**
* Extract an area from an image.
*
* **Optional parameters**
* - **interesting** -- How to measure interestingness, VipsInteresting.
*
* @param width Width of extract area.
* @param height Height of extract area.
* @param options Set of options.
* @return Output image.
*/
VImage smartcrop( int width, int height, VOption *options = 0 ) const;
/**
* Sobel edge detector.
* @param options Set of options.
* @return Output image.
*/
VImage sobel( VOption *options = 0 ) const;
/**
* Spatial correlation.
* @param ref Input reference image.
* @param options Set of options.
* @return Output image.
*/
VImage spcor( VImage ref, VOption *options = 0 ) const;
/**
* Make displayable power spectrum.
* @param options Set of options.
* @return Output image.
*/
VImage spectrum( VOption *options = 0 ) const;
/**
* Find many image stats.
* @param options Set of options.
* @return Output array of statistics.
*/
VImage stats( VOption *options = 0 ) const;
/**
* Statistical difference.
*
* **Optional parameters**
* - **s0** -- New deviation, double.
* - **b** -- Weight of new deviation, double.
* - **m0** -- New mean, double.
* - **a** -- Weight of new mean, double.
*
* @param width Window width in pixels.
* @param height Window height in pixels.
* @param options Set of options.
* @return Output image.
*/
VImage stdif( int width, int height, VOption *options = 0 ) const;
/**
* Subsample an image.
*
* **Optional parameters**
* - **point** -- Point sample, bool.
*
* @param xfac Horizontal subsample factor.
* @param yfac Vertical subsample factor.
* @param options Set of options.
* @return Output image.
*/
VImage subsample( int xfac, int yfac, VOption *options = 0 ) const;
/**
* Subtract two images.
* @param right Right-hand image argument.
* @param options Set of options.
* @return Output image.
*/
VImage subtract( VImage right, VOption *options = 0 ) const;
/**
* Sum an array of images.
* @param in Array of input images.
* @param options Set of options.
* @return Output image.
*/
static VImage sum( std::vector<VImage> in, VOption *options = 0 );
/**
* Load svg with rsvg.
*
* **Optional parameters**
* - **dpi** -- Render at this DPI, double.
* - **scale** -- Scale output by this factor, double.
* - **unlimited** -- Allow SVG of any size, bool.
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param filename Filename to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage svgload( const char *filename, VOption *options = 0 );
/**
* Load svg with rsvg.
*
* **Optional parameters**
* - **dpi** -- Render at this DPI, double.
* - **scale** -- Scale output by this factor, double.
* - **unlimited** -- Allow SVG of any size, bool.
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param buffer Buffer to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage svgload_buffer( VipsBlob *buffer, VOption *options = 0 );
/**
* Load svg from source.
*
* **Optional parameters**
* - **dpi** -- Render at this DPI, double.
* - **scale** -- Scale output by this factor, double.
* - **unlimited** -- Allow SVG of any size, bool.
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param source Source to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage svgload_source( VSource source, VOption *options = 0 );
/**
* Find the index of the first non-zero pixel in tests.
* @param tests Table of images to test.
* @param options Set of options.
* @return Output image.
*/
static VImage switch_image( std::vector<VImage> tests, VOption *options = 0 );
/**
* Run an external command.
*
* **Optional parameters**
* - **in** -- Array of input images, std::vector<VImage>.
* - **out_format** -- Format for output filename, const char *.
* - **in_format** -- Format for input filename, const char *.
*
* @param cmd_format Command to run.
* @param options Set of options.
*/
static void system( const char *cmd_format, VOption *options = 0 );
/**
* Make a text image.
*
* **Optional parameters**
* - **font** -- Font to render with, const char *.
* - **width** -- Maximum image width in pixels, int.
* - **height** -- Maximum image height in pixels, int.
* - **align** -- Align on the low, centre or high edge, VipsAlign.
* - **dpi** -- DPI to render at, int.
* - **justify** -- Justify lines, bool.
* - **spacing** -- Line spacing, int.
* - **fontfile** -- Load this font file, const char *.
*
* @param text Text to render.
* @param options Set of options.
* @return Output image.
*/
static VImage text( const char *text, VOption *options = 0 );
/**
* Generate thumbnail from file.
*
* **Optional parameters**
* - **height** -- Size to this height, int.
* - **size** -- Only upsize, only downsize, or both, VipsSize.
* - **no_rotate** -- Don't use orientation tags to rotate image upright, bool.
* - **crop** -- Reduce to fill target rectangle, then crop, VipsInteresting.
* - **linear** -- Reduce in linear light, bool.
* - **import_profile** -- Fallback import profile, const char *.
* - **export_profile** -- Fallback export profile, const char *.
* - **intent** -- Rendering intent, VipsIntent.
* - **auto_rotate** -- Use orientation tags to rotate image upright, bool.
*
* @param filename Filename to read from.
* @param width Size to this width.
* @param options Set of options.
* @return Output image.
*/
static VImage thumbnail( const char *filename, int width, VOption *options = 0 );
/**
* Generate thumbnail from buffer.
*
* **Optional parameters**
* - **option_string** -- Options that are passed on to the underlying loader, const char *.
* - **height** -- Size to this height, int.
* - **size** -- Only upsize, only downsize, or both, VipsSize.
* - **no_rotate** -- Don't use orientation tags to rotate image upright, bool.
* - **crop** -- Reduce to fill target rectangle, then crop, VipsInteresting.
* - **linear** -- Reduce in linear light, bool.
* - **import_profile** -- Fallback import profile, const char *.
* - **export_profile** -- Fallback export profile, const char *.
* - **intent** -- Rendering intent, VipsIntent.
* - **auto_rotate** -- Use orientation tags to rotate image upright, bool.
*
* @param buffer Buffer to load from.
* @param width Size to this width.
* @param options Set of options.
* @return Output image.
*/
static VImage thumbnail_buffer( VipsBlob *buffer, int width, VOption *options = 0 );
/**
* Generate thumbnail from image.
*
* **Optional parameters**
* - **height** -- Size to this height, int.
* - **size** -- Only upsize, only downsize, or both, VipsSize.
* - **no_rotate** -- Don't use orientation tags to rotate image upright, bool.
* - **crop** -- Reduce to fill target rectangle, then crop, VipsInteresting.
* - **linear** -- Reduce in linear light, bool.
* - **import_profile** -- Fallback import profile, const char *.
* - **export_profile** -- Fallback export profile, const char *.
* - **intent** -- Rendering intent, VipsIntent.
* - **auto_rotate** -- Use orientation tags to rotate image upright, bool.
*
* @param width Size to this width.
* @param options Set of options.
* @return Output image.
*/
VImage thumbnail_image( int width, VOption *options = 0 ) const;
/**
* Generate thumbnail from source.
*
* **Optional parameters**
* - **option_string** -- Options that are passed on to the underlying loader, const char *.
* - **height** -- Size to this height, int.
* - **size** -- Only upsize, only downsize, or both, VipsSize.
* - **no_rotate** -- Don't use orientation tags to rotate image upright, bool.
* - **crop** -- Reduce to fill target rectangle, then crop, VipsInteresting.
* - **linear** -- Reduce in linear light, bool.
* - **import_profile** -- Fallback import profile, const char *.
* - **export_profile** -- Fallback export profile, const char *.
* - **intent** -- Rendering intent, VipsIntent.
* - **auto_rotate** -- Use orientation tags to rotate image upright, bool.
*
* @param source Source to load from.
* @param width Size to this width.
* @param options Set of options.
* @return Output image.
*/
static VImage thumbnail_source( VSource source, int width, VOption *options = 0 );
/**
* Load tiff from file.
*
* **Optional parameters**
* - **page** -- Load this page from the image, int.
* - **subifd** -- Select subifd index, int.
* - **n** -- Load this many pages, int.
* - **autorotate** -- Rotate image using orientation tag, bool.
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param filename Filename to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage tiffload( const char *filename, VOption *options = 0 );
/**
* Load tiff from buffer.
*
* **Optional parameters**
* - **page** -- Load this page from the image, int.
* - **subifd** -- Select subifd index, int.
* - **n** -- Load this many pages, int.
* - **autorotate** -- Rotate image using orientation tag, bool.
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param buffer Buffer to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage tiffload_buffer( VipsBlob *buffer, VOption *options = 0 );
/**
* Load tiff from source.
*
* **Optional parameters**
* - **page** -- Load this page from the image, int.
* - **subifd** -- Select subifd index, int.
* - **n** -- Load this many pages, int.
* - **autorotate** -- Rotate image using orientation tag, bool.
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param source Source to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage tiffload_source( VSource source, VOption *options = 0 );
/**
* Save image to tiff file.
*
* **Optional parameters**
* - **compression** -- Compression for this file, VipsForeignTiffCompression.
* - **Q** -- Q factor, int.
* - **predictor** -- Compression prediction, VipsForeignTiffPredictor.
* - **profile** -- ICC profile to embed, const char *.
* - **tile** -- Write a tiled tiff, bool.
* - **tile_width** -- Tile width in pixels, int.
* - **tile_height** -- Tile height in pixels, int.
* - **pyramid** -- Write a pyramidal tiff, bool.
* - **squash** -- Squash images down to 1 bit, bool.
* - **miniswhite** -- Use 0 for white in 1-bit images, bool.
* - **bitdepth** -- Write as a 1, 2, 4 or 8 bit image, int.
* - **resunit** -- Resolution unit, VipsForeignTiffResunit.
* - **xres** -- Horizontal resolution in pixels/mm, double.
* - **yres** -- Vertical resolution in pixels/mm, double.
* - **bigtiff** -- Write a bigtiff image, bool.
* - **rgbjpeg** -- Output RGB JPEG rather than YCbCr, bool.
* - **properties** -- Write a properties document to IMAGEDESCRIPTION, bool.
* - **region_shrink** -- Method to shrink regions, VipsRegionShrink.
* - **level** -- ZSTD compression level, int.
* - **subifd** -- Save pyr layers as sub-IFDs, bool.
* - **lossless** -- Enable WEBP lossless mode, bool.
* - **depth** -- Pyramid depth, VipsForeignDzDepth.
* - **strip** -- Strip all metadata from image, bool.
* - **background** -- Background value, std::vector<double>.
* - **page_height** -- Set page height for multipage save, int.
*
* @param filename Filename to save to.
* @param options Set of options.
*/
void tiffsave( const char *filename, VOption *options = 0 ) const;
/**
* Save image to tiff buffer.
*
* **Optional parameters**
* - **compression** -- Compression for this file, VipsForeignTiffCompression.
* - **Q** -- Q factor, int.
* - **predictor** -- Compression prediction, VipsForeignTiffPredictor.
* - **profile** -- ICC profile to embed, const char *.
* - **tile** -- Write a tiled tiff, bool.
* - **tile_width** -- Tile width in pixels, int.
* - **tile_height** -- Tile height in pixels, int.
* - **pyramid** -- Write a pyramidal tiff, bool.
* - **squash** -- Squash images down to 1 bit, bool.
* - **miniswhite** -- Use 0 for white in 1-bit images, bool.
* - **bitdepth** -- Write as a 1, 2, 4 or 8 bit image, int.
* - **resunit** -- Resolution unit, VipsForeignTiffResunit.
* - **xres** -- Horizontal resolution in pixels/mm, double.
* - **yres** -- Vertical resolution in pixels/mm, double.
* - **bigtiff** -- Write a bigtiff image, bool.
* - **rgbjpeg** -- Output RGB JPEG rather than YCbCr, bool.
* - **properties** -- Write a properties document to IMAGEDESCRIPTION, bool.
* - **region_shrink** -- Method to shrink regions, VipsRegionShrink.
* - **level** -- ZSTD compression level, int.
* - **subifd** -- Save pyr layers as sub-IFDs, bool.
* - **lossless** -- Enable WEBP lossless mode, bool.
* - **depth** -- Pyramid depth, VipsForeignDzDepth.
* - **strip** -- Strip all metadata from image, bool.
* - **background** -- Background value, std::vector<double>.
* - **page_height** -- Set page height for multipage save, int.
*
* @param options Set of options.
* @return Buffer to save to.
*/
VipsBlob *tiffsave_buffer( VOption *options = 0 ) const;
/**
* Cache an image as a set of tiles.
*
* **Optional parameters**
* - **tile_width** -- Tile width in pixels, int.
* - **tile_height** -- Tile height in pixels, int.
* - **max_tiles** -- Maximum number of tiles to cache, int.
* - **access** -- Expected access pattern, VipsAccess.
* - **threaded** -- Allow threaded access, bool.
* - **persistent** -- Keep cache between evaluations, bool.
*
* @param options Set of options.
* @return Output image.
*/
VImage tilecache( VOption *options = 0 ) const;
/**
* Build a look-up table.
*
* **Optional parameters**
* - **in_max** -- Size of LUT to build, int.
* - **out_max** -- Maximum value in output LUT, int.
* - **Lb** -- Lowest value in output, double.
* - **Lw** -- Highest value in output, double.
* - **Ps** -- Position of shadow, double.
* - **Pm** -- Position of mid-tones, double.
* - **Ph** -- Position of highlights, double.
* - **S** -- Adjust shadows by this much, double.
* - **M** -- Adjust mid-tones by this much, double.
* - **H** -- Adjust highlights by this much, double.
*
* @param options Set of options.
* @return Output image.
*/
static VImage tonelut( VOption *options = 0 );
/**
* Transpose3d an image.
*
* **Optional parameters**
* - **page_height** -- Height of each input page, int.
*
* @param options Set of options.
* @return Output image.
*/
VImage transpose3d( VOption *options = 0 ) const;
/**
* Unpremultiply image alpha.
*
* **Optional parameters**
* - **max_alpha** -- Maximum value of alpha channel, double.
* - **alpha_band** -- Unpremultiply with this alpha, int.
*
* @param options Set of options.
* @return Output image.
*/
VImage unpremultiply( VOption *options = 0 ) const;
/**
* Load vips from file.
*
* **Optional parameters**
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param filename Filename to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage vipsload( const char *filename, VOption *options = 0 );
/**
* Save image to vips file.
*
* **Optional parameters**
* - **strip** -- Strip all metadata from image, bool.
* - **background** -- Background value, std::vector<double>.
* - **page_height** -- Set page height for multipage save, int.
*
* @param filename Filename to save to.
* @param options Set of options.
*/
void vipssave( const char *filename, VOption *options = 0 ) const;
/**
* Load webp from file.
*
* **Optional parameters**
* - **page** -- Load this page from the file, int.
* - **n** -- Load this many pages, int.
* - **scale** -- Scale factor on load, double.
* - **shrink** -- Shrink factor on load, int.
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param filename Filename to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage webpload( const char *filename, VOption *options = 0 );
/**
* Load webp from buffer.
*
* **Optional parameters**
* - **page** -- Load this page from the file, int.
* - **n** -- Load this many pages, int.
* - **scale** -- Scale factor on load, double.
* - **shrink** -- Shrink factor on load, int.
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param buffer Buffer to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage webpload_buffer( VipsBlob *buffer, VOption *options = 0 );
/**
* Load webp from source.
*
* **Optional parameters**
* - **page** -- Load this page from the file, int.
* - **n** -- Load this many pages, int.
* - **scale** -- Scale factor on load, double.
* - **shrink** -- Shrink factor on load, int.
* - **memory** -- Force open via memory, bool.
* - **access** -- Required access pattern for this file, VipsAccess.
* - **sequential** -- Sequential read only, bool.
* - **fail** -- Fail on first error, bool.
* - **disc** -- Open to disc, bool.
*
* @param source Source to load from.
* @param options Set of options.
* @return Output image.
*/
static VImage webpload_source( VSource source, VOption *options = 0 );
/**
* Save image to webp file.
*
* **Optional parameters**
* - **Q** -- Q factor, int.
* - **lossless** -- enable lossless compression, bool.
* - **preset** -- Preset for lossy compression, VipsForeignWebpPreset.
* - **smart_subsample** -- Enable high quality chroma subsampling, bool.
* - **near_lossless** -- Enable preprocessing in lossless mode (uses Q), bool.
* - **alpha_q** -- Change alpha plane fidelity for lossy compression, int.
* - **min_size** -- Optimise for minium size, bool.
* - **kmin** -- Minimum number of frames between key frames, int.
* - **kmax** -- Maximum number of frames between key frames, int.
* - **reduction_effort** -- Level of CPU effort to reduce file size, int.
* - **profile** -- ICC profile to embed, const char *.
* - **strip** -- Strip all metadata from image, bool.
* - **background** -- Background value, std::vector<double>.
* - **page_height** -- Set page height for multipage save, int.
*
* @param filename Filename to save to.
* @param options Set of options.
*/
void webpsave( const char *filename, VOption *options = 0 ) const;
/**
* Save image to webp buffer.
*
* **Optional parameters**
* - **Q** -- Q factor, int.
* - **lossless** -- enable lossless compression, bool.
* - **preset** -- Preset for lossy compression, VipsForeignWebpPreset.
* - **smart_subsample** -- Enable high quality chroma subsampling, bool.
* - **near_lossless** -- Enable preprocessing in lossless mode (uses Q), bool.
* - **alpha_q** -- Change alpha plane fidelity for lossy compression, int.
* - **min_size** -- Optimise for minium size, bool.
* - **kmin** -- Minimum number of frames between key frames, int.
* - **kmax** -- Maximum number of frames between key frames, int.
* - **reduction_effort** -- Level of CPU effort to reduce file size, int.
* - **profile** -- ICC profile to embed, const char *.
* - **strip** -- Strip all metadata from image, bool.
* - **background** -- Background value, std::vector<double>.
* - **page_height** -- Set page height for multipage save, int.
*
* @param options Set of options.
* @return Buffer to save to.
*/
VipsBlob *webpsave_buffer( VOption *options = 0 ) const;
/**
* Save image to webp target.
*
* **Optional parameters**
* - **Q** -- Q factor, int.
* - **lossless** -- enable lossless compression, bool.
* - **preset** -- Preset for lossy compression, VipsForeignWebpPreset.
* - **smart_subsample** -- Enable high quality chroma subsampling, bool.
* - **near_lossless** -- Enable preprocessing in lossless mode (uses Q), bool.
* - **alpha_q** -- Change alpha plane fidelity for lossy compression, int.
* - **min_size** -- Optimise for minium size, bool.
* - **kmin** -- Minimum number of frames between key frames, int.
* - **kmax** -- Maximum number of frames between key frames, int.
* - **reduction_effort** -- Level of CPU effort to reduce file size, int.
* - **profile** -- ICC profile to embed, const char *.
* - **strip** -- Strip all metadata from image, bool.
* - **background** -- Background value, std::vector<double>.
* - **page_height** -- Set page height for multipage save, int.
*
* @param target Target to save to.
* @param options Set of options.
*/
void webpsave_target( VTarget target, VOption *options = 0 ) const;
/**
* Make a worley noise image.
*
* **Optional parameters**
* - **cell_size** -- Size of Worley cells, int.
*
* @param width Image width in pixels.
* @param height Image height in pixels.
* @param options Set of options.
* @return Output image.
*/
static VImage worley( int width, int height, VOption *options = 0 );
/**
* Wrap image origin.
*
* **Optional parameters**
* - **x** -- Left edge of input in output, int.
* - **y** -- Top edge of input in output, int.
*
* @param options Set of options.
* @return Output image.
*/
VImage wrap( VOption *options = 0 ) const;
/**
* Make an image where pixel values are coordinates.
*
* **Optional parameters**
* - **csize** -- Size of third dimension, int.
* - **dsize** -- Size of fourth dimension, int.
* - **esize** -- Size of fifth dimension, int.
*
* @param width Image width in pixels.
* @param height Image height in pixels.
* @param options Set of options.
* @return Output image.
*/
static VImage xyz( int width, int height, VOption *options = 0 );
/**
* Make a zone plate.
*
* **Optional parameters**
* - **uchar** -- Output an unsigned char image, bool.
*
* @param width Image width in pixels.
* @param height Image height in pixels.
* @param options Set of options.
* @return Output image.
*/
static VImage zone( int width, int height, VOption *options = 0 );
/**
* Zoom an image.
* @param xfac Horizontal zoom factor.
* @param yfac Vertical zoom factor.
* @param options Set of options.
* @return Output image.
*/
VImage zoom( int xfac, int yfac, VOption *options = 0 ) const;
};
VIPS_NAMESPACE_END
#endif /*VIPS_VIMAGE_H*/
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