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move dE00 to a class

This commit is contained in:
John Cupitt 2012-10-31 11:22:28 +00:00
parent de3298d69e
commit a2d4c15049
13 changed files with 150 additions and 193 deletions
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2
ChangeLog
View File

@ -4,7 +4,7 @@
im_Lab2LabQ(), im_LabQ2Lab(), im_Lab2LabS(), im_LabS2Lab(), im_LabQ2LabS(),
im_LabS2LabQ(), im_LabQ2disp(), im_XYZ2disp(), im_disp2XYZ(),
im_icc_import*(), im_icc_export*(), im_icc_transform*(), im_dE_fromLab(),
im_dECMC_fromLab().
im_dECMC_fromLab(), im_dE00_from_Lab()
as classes
- added vips_colour_convert(), replaces all derived conversions
- dzsave can write zoomify and google maps layout as well

1
TODO
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@ -4,7 +4,6 @@
trim this down!
- add mono as a colourspace? also rad?
- something to test if an image is in a supported colourspace?

6
libvips/colour/Makefile.am
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@ -2,9 +2,9 @@ noinst_LTLIBRARIES = libcolour.la
libcolour_la_SOURCES = \
colour.c \
colour_funcs.c \
colour_dispatch.c \
dE76.c \
dE00.c \
dECMC.c \
icc_transform.c \
Lab2XYZ.c \
@ -25,8 +25,6 @@ libcolour_la_SOURCES = \
LabQ2LabS.c \
LabQ2sRGB.c \
XYZ2sRGB.c \
sRGB2XYZ.c \
im_lab_morph.c \
im_dE00_fromLab.c
sRGB2XYZ.c
INCLUDES = -I${top_srcdir}/libvips/include @VIPS_CFLAGS@ @VIPS_INCLUDES@

4
libvips/colour/colour.c
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@ -849,6 +849,8 @@ vips_colour_operation_init( void )
extern GType vips_icc_transform_get_type( void );
#endif
extern GType vips_dE76_get_type( void );
extern GType vips_dE00_get_type( void );
extern GType vips_dECMC_get_type( void );
vips_colour_convert_get_type();
vips_Lab2XYZ_get_type();
@ -876,4 +878,6 @@ vips_colour_operation_init( void )
vips_icc_transform_get_type();
#endif
vips_dE76_get_type();
vips_dE00_get_type();
vips_dECMC_get_type();
}

139
libvips/colour/colour_funcs.c → libvips/colour/dE00.c
View File

@ -1,31 +1,8 @@
/* Convert colours in various ways.
/* dE00.c
*
* Written: January 1990
* Modified .. innumerable times
* Code by: DS, JC, J-Ph.L.
* 18/7/93 JC
* - final tidies before v7 release
* - ANSIfied
* - code for samples removed
* 5/5/94 JC
* - nint() -> rint() to make ANSI easier
* 14/3/96 JC
* - new display characterisation
* - speed-up to im_col_XYZ2rgb() and im_col_rgb2XYZ()
* 4/3/98 JC
* - new display profile for ultra2
* - new sRGB profile
* 17/8/98 JC
* - error_exit() removed, now clips
* 26/11/03 Andrey Kiselev
* - tiny clean-up for calcul_tables()
* - some reformatting
* 23/7/07
* - tiny cleanup for make_hI() prevents cond jump on ui in valgrind
* 14/3/08
* - more tiny cond jump valgrind fixes
* 23/10/09
* - gtkdoc comments
* Modified:
* 31/10/12
* - from dE76.c
*/
/*
@ -59,40 +36,24 @@
#endif /*HAVE_CONFIG_H*/
#include <vips/intl.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <math.h>
#include <vips/vips.h>
#include <vips/internal.h>
#include <vips/debug.h>
#include "colour.h"
typedef struct _VipsdE00 {
VipsColourDifference parent_instance;
} VipsdE00;
typedef VipsColourSpaceClass VipsdE00Class;
G_DEFINE_TYPE( VipsdE00, vips_dE00, VIPS_TYPE_COLOUR_DIFFERENCE );
/**
* vips_pythagoras:
* @L1: Input coordinate 1
* @a1: Input coordinate 1
* @b1: Input coordinate 1
* @L2: Input coordinate 2
* @a2: Input coordinate 2
* @b2: Input coordinate 2
*
* Pythagorean distance between two points in colour space. Lab/XYZ/UCS etc.
*/
float
vips_pythagoras( float L1, float a1, float b1, float L2, float a2, float b2 )
{
float dL = L1 - L2;
float da = a1 - a2;
float db = b1 - b2;
return( sqrt( dL * dL + da * da + db * db ) );
}
/* Functions to convert from Lab to uniform colour space and back.
*/
/**
* im_col_dE00:
* vips_col_dE00:
* @L1: Input coordinate 1
* @a1: Input coordinate 1
* @b1: Input coordinate 1
@ -108,7 +69,7 @@ vips_pythagoras( float L1, float a1, float b1, float L2, float a2, float b2 )
* Returns: CIE dE2000 colour difference.
*/
float
im_col_dE00( float L1, float a1, float b1,
vips_col_dE00( float L1, float a1, float b1,
float L2, float a2, float b2 )
{
/* Code if you want XYZ params and the colour temp used in the reference
@ -241,3 +202,67 @@ im_col_dE00( float L1, float a1, float b1,
return( dE00 );
}
/* Find the difference between two buffers of LAB data.
*/
void
vips_dE00_line( VipsColour *colour,
VipsPel *out, VipsPel **in, int width )
{
float *p1 = (float *) in[0];
float *p2 = (float *) in[1];
float *q = (float *) out;
int x;
for( x = 0; x < width; x++ ) {
q[x] = vips_col_dE00( p1[0], p1[1], p1[2],
p2[0], p2[1], p2[2] );
p1 += 3;
p2 += 3;
}
}
static void
vips_dE00_class_init( VipsdE00Class *class )
{
VipsObjectClass *object_class = (VipsObjectClass *) class;
VipsColourClass *colour_class = VIPS_COLOUR_CLASS( class );
object_class->nickname = "dE00";
object_class->description = _( "calculate dE00" );
colour_class->process_line = vips_dE00_line;
}
static void
vips_dE00_init( VipsdE00 *dE00 )
{
VipsColourDifference *difference = VIPS_COLOUR_DIFFERENCE( dE00 );
difference->interpretation = VIPS_INTERPRETATION_LAB;
}
/**
* vips_dE00:
* @left: first input image
* @right: second input image
* @out: output image
*
* Calculate dE 00.
*
* Returns: 0 on success, -1 on error
*/
int
vips_dE00( VipsImage *left, VipsImage *right, VipsImage **out, ... )
{
va_list ap;
int result;
va_start( ap, out );
result = vips_call_split( "dE00", ap, left, right, out );
va_end( ap );
return( result );
}

33
libvips/colour/dE76.c
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@ -41,6 +41,8 @@
#endif /*HAVE_CONFIG_H*/
#include <vips/intl.h>
#include <math.h>
#include <vips/vips.h>
#include <vips/debug.h>
@ -55,6 +57,27 @@ typedef VipsColourSpaceClass VipsdE76Class;
G_DEFINE_TYPE( VipsdE76, vips_dE76, VIPS_TYPE_COLOUR_DIFFERENCE );
/**
* vips_pythagoras:
* @L1: Input coordinate 1
* @a1: Input coordinate 1
* @b1: Input coordinate 1
* @L2: Input coordinate 2
* @a2: Input coordinate 2
* @b2: Input coordinate 2
*
* Pythagorean distance between two points in colour space. Lab/XYZ/UCS etc.
*/
float
vips_pythagoras( float L1, float a1, float b1, float L2, float a2, float b2 )
{
float dL = L1 - L2;
float da = a1 - a2;
float db = b1 - b2;
return( sqrt( dL * dL + da * da + db * db ) );
}
/* Find the difference between two buffers of LAB data.
*/
void
@ -68,8 +91,11 @@ vips__pythagoras_line( VipsColour *colour,
int x;
for( x = 0; x < width; x++ ) {
q[x] = vips_pythagoras(
p1[0], p1[1], p1[2], p2[0], p2[1], p2[2] );
float dL = p1[0] - p2[0];
float da = p1[1] - p2[1];
float db = p1[2] - p2[2];
q[x] = sqrt( dL * dL + da * da + db * db );
p1 += 3;
p2 += 3;
@ -98,7 +124,8 @@ vips_dE76_init( VipsdE76 *dE76 )
/**
* vips_dE76:
* @in: input image
* @left: first input image
* @right: second input image
* @out: output image
*
* Calculate dE 76.

3
libvips/colour/dECMC.c
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@ -72,7 +72,8 @@ vips_dECMC_init( VipsdECMC *dECMC )
/**
* vips_dECMC:
* @in: input image
* @left: first input image
* @right: second input image
* @out: output image
*
* Calculate dE CMC. The input images are transformed to UCS colour space and

115
libvips/colour/im_dE00_fromLab.c
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@ -1,115 +0,0 @@
/* im_dE00_fromLab.c
*
* 10/10/02 JC
* - from dECMC
* 30/10/09
* - add im__colour_binary() and use it
* - gtkdoc comment
*/
/*
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif /*HAVE_CONFIG_H*/
#include <vips/intl.h>
#include <vips/vips.h>
#include <vips/internal.h>
/* A colour difference operation.
*/
int
im__colour_difference( const char *domain,
IMAGE *in1, IMAGE *in2, IMAGE *out,
im_wrapmany_fn buffer_fn, void *a, void *b )
{
IMAGE *t[3];
if( im_check_uncoded( domain, in1 ) ||
im_check_uncoded( domain, in2 ) ||
im_check_bands( domain, in1, 3 ) ||
im_check_bands( domain, in2, 3 ) ||
im_check_size_same( domain, in1, in2 ) ||
im_open_local_array( out, t, 2, domain, "p" ) ||
im_clip2fmt( in1, t[0], IM_BANDFMT_FLOAT ) ||
im_clip2fmt( in2, t[1], IM_BANDFMT_FLOAT ) )
return( -1 );
if( im_cp_descv( out, t[0], t[1], NULL ) )
return( -1 );
out->Bands = 1;
out->Type = IM_TYPE_B_W;
t[2] = NULL;
if( im_wrapmany( t, out, buffer_fn, a, b ) )
return( -1 );
return( 0 );
}
/* Process a buffer.
*/
void
imb_dE00_fromLab( float **p, float *q, int n )
{
float *p1 = p[0];
float *p2 = p[1];
int x;
for( x = 0; x < n; x++ ) {
float L1 = p1[0];
float a1 = p1[1];
float b1 = p1[2];
float L2 = p2[0];
float a2 = p2[1];
float b2 = p2[2];
p1 += 3;
p2 += 3;
q[x] = im_col_dE00( L1, a1, b1, L2, a2, b2 );
}
}
/**
* im_dE00_fromLab:
* @in1: first input image
* @in2: second input image
* @out: output image
*
* Calculate CIE dE00 from two Lab images.
*
* Returns: 0 on success, -1 on error.
*/
int
im_dE00_fromLab( IMAGE *in1, IMAGE *in2, IMAGE *out )
{
return( im__colour_difference( "im_dE00_fromLab",
in1, in2, out,
(im_wrapmany_fn) imb_dE00_fromLab, NULL, NULL ) );
}

1
libvips/deprecated/Makefile.am
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@ -2,6 +2,7 @@ noinst_LTLIBRARIES = libdeprecated.la
libdeprecated_la_SOURCES = \
im_openslide2vips.c \
im_lab_morph.c \
deprecated_dispatch.c \
wrapvips7.c \
lazy.c \

0
libvips/colour/im_lab_morph.c → libvips/deprecated/im_lab_morph.c
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17
libvips/deprecated/vips7compat.c
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@ -2807,3 +2807,20 @@ im_dECMC_fromLab( IMAGE *in1, IMAGE *in2, IMAGE *out )
return( 0 );
}
int
im_dE00_fromLab( IMAGE *in1, IMAGE *in2, IMAGE *out )
{
VipsImage *x;
if( vips_dE00( in1, in2, &x,
NULL ) )
return( -1 );
if( im_copy( x, out ) ) {
g_object_unref( x );
return( -1 );
}
g_object_unref( x );
return( 0 );
}

14
libvips/include/vips/colour.h
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@ -170,6 +170,8 @@ int vips_icc_ac2rc( VipsImage *in, VipsImage *out,
int vips_dE76( VipsImage *left, VipsImage *right, VipsImage **out, ... )
__attribute__((sentinel));
int vips_dE00( VipsImage *left, VipsImage *right, VipsImage **out, ... )
__attribute__((sentinel));
int vips_dECMC( VipsImage *left, VipsImage *right, VipsImage **out, ... )
__attribute__((sentinel));
@ -195,21 +197,11 @@ int vips_col_XYZ2sRGB( float X, float Y, float Z,
int *or_ret );
int vips_col_sRGB2XYZ( int r, int g, int b, float *X, float *Y, float *Z );
/* Colour loading and conversion functions.
*/
float vips_pythagoras( float L1, float a1, float b1,
float L2, float a2, float b2 );
float im_col_dE00(
float vips_col_dE00(
float L1, float a1, float b1, float L2, float a2, float b2 );
int im_dE00_fromLab( VipsImage *in1, VipsImage *in2, VipsImage *out );
int im_lab_morph( VipsImage *in, VipsImage *out,
DOUBLEMASK *mask,
double L_offset, double L_scale,
double a_scale, double b_scale );
#ifdef __cplusplus
}
#endif /*__cplusplus*/

8
libvips/include/vips/vips7compat.h
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@ -779,6 +779,14 @@ int im_XYZ2UCS( VipsImage *in, VipsImage *out );
int im_dE_fromLab( VipsImage *in1, VipsImage *in2, VipsImage *out );
int im_dECMC_fromLab( VipsImage *in1, VipsImage *in2, VipsImage *out );
int im_dE_fromXYZ( VipsImage *in1, VipsImage *in2, VipsImage *out );
int im_dE00_fromLab( VipsImage *in1, VipsImage *in2, VipsImage *out );
int im_lab_morph( VipsImage *in, VipsImage *out,
DOUBLEMASK *mask,
double L_offset, double L_scale,
double a_scale, double b_scale );
#define im_col_dE00 vips_col_dE00
/* ruby-vips uses this
*/