Correct typo in comment for out parameter of inverlut() and remove some trailing whitespace
This commit is contained in:
Alistair Thomas
parent
0563330b43
commit
103452c3ee
@ -1,7 +1,7 @@
|
||||
/* invert a lut
|
||||
*
|
||||
* Written on: 5/6/01
|
||||
* Modified on :
|
||||
* Modified on :
|
||||
*
|
||||
* 7/7/03 JC
|
||||
* - generate image rather than doublemask (arrg)
|
||||
@ -17,7 +17,7 @@
|
||||
/*
|
||||
|
||||
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
|
||||
@ -65,7 +65,7 @@ typedef struct _VipsInvertlut {
|
||||
|
||||
/* Input image.
|
||||
*/
|
||||
VipsImage *in;
|
||||
VipsImage *in;
|
||||
|
||||
/* .. and cast to a matrix.
|
||||
*/
|
||||
@ -119,31 +119,31 @@ vips_invertlut_build_init( VipsInvertlut *lut )
|
||||
int x, y;
|
||||
|
||||
if( !lut->mat ||
|
||||
lut->mat->Xsize < 2 ||
|
||||
lut->mat->Xsize < 2 ||
|
||||
lut->mat->Ysize < 1 ) {
|
||||
vips_error( class->nickname, "%s", _( "bad input matrix" ) );
|
||||
return( -1 );
|
||||
}
|
||||
if( lut->size < 1 ||
|
||||
if( lut->size < 1 ||
|
||||
lut->size > 65536 ) {
|
||||
vips_error( class->nickname, "%s", _( "bad size" ) );
|
||||
return( -1 );
|
||||
}
|
||||
|
||||
if( !(lut->buf =
|
||||
if( !(lut->buf =
|
||||
VIPS_ARRAY( NULL, lut->size * (lut->mat->Xsize - 1), double )) )
|
||||
return( -1 );
|
||||
|
||||
if( !(lut->data = VIPS_ARRAY( NULL, lut->mat->Ysize, double * )) )
|
||||
return( -1 );
|
||||
for( y = 0; y < lut->mat->Ysize; y++ )
|
||||
for( y = 0; y < lut->mat->Ysize; y++ )
|
||||
lut->data[y] = VIPS_MATRIX( lut->mat, 0, y );
|
||||
|
||||
/* Sanity check for data range.
|
||||
*/
|
||||
for( y = 0; y < lut->mat->Ysize; y++ )
|
||||
for( x = 0; x < lut->mat->Xsize; x++ )
|
||||
if( lut->data[y][x] > 1.0 ||
|
||||
for( y = 0; y < lut->mat->Ysize; y++ )
|
||||
for( x = 0; x < lut->mat->Xsize; x++ )
|
||||
if( lut->data[y][x] > 1.0 ||
|
||||
lut->data[y][x] < 0.0 ) {
|
||||
vips_error( class->nickname,
|
||||
_( "element (%d, %d) is %g, "
|
||||
@ -204,10 +204,10 @@ vips_invertlut_build_create( VipsInvertlut *lut )
|
||||
/* Inside the loop to avoid /0 errors for last ==
|
||||
* (size - 1).
|
||||
*/
|
||||
double fac = (1 - lut->data[height - 1][0]) /
|
||||
double fac = (1 - lut->data[height - 1][0]) /
|
||||
((lut->size - 1) - last);
|
||||
|
||||
lut->buf[b + k * bands] =
|
||||
lut->buf[b + k * bands] =
|
||||
lut->data[height - 1][0] + (k - last) * fac;
|
||||
}
|
||||
|
||||
@ -255,17 +255,17 @@ vips_invertlut_build( VipsObject *object )
|
||||
return( -1 );
|
||||
|
||||
if( vips_check_matrix( class->nickname, lut->in, &lut->mat ) )
|
||||
return( -1 );
|
||||
return( -1 );
|
||||
|
||||
if( vips_invertlut_build_init( lut ) ||
|
||||
vips_invertlut_build_create( lut ) )
|
||||
return( -1 );
|
||||
return( -1 );
|
||||
|
||||
vips_image_init_fields( create->out,
|
||||
lut->size, 1, lut->mat->Xsize - 1,
|
||||
VIPS_FORMAT_DOUBLE, VIPS_CODING_NONE,
|
||||
lut->size, 1, lut->mat->Xsize - 1,
|
||||
VIPS_FORMAT_DOUBLE, VIPS_CODING_NONE,
|
||||
VIPS_INTERPRETATION_HISTOGRAM, 1.0, 1.0 );
|
||||
if( vips_image_write_line( create->out, 0, (VipsPel *) lut->buf ) )
|
||||
if( vips_image_write_line( create->out, 0, (VipsPel *) lut->buf ) )
|
||||
return( -1 );
|
||||
|
||||
return( 0 );
|
||||
@ -285,14 +285,14 @@ vips_invertlut_class_init( VipsInvertlutClass *class )
|
||||
vobject_class->description = _( "build an inverted look-up table" );
|
||||
vobject_class->build = vips_invertlut_build;
|
||||
|
||||
VIPS_ARG_IMAGE( class, "in", 0,
|
||||
_( "Input" ),
|
||||
VIPS_ARG_IMAGE( class, "in", 0,
|
||||
_( "Input" ),
|
||||
_( "Matrix of XY coordinates" ),
|
||||
VIPS_ARGUMENT_REQUIRED_INPUT,
|
||||
G_STRUCT_OFFSET( VipsInvertlut, in ) );
|
||||
G_STRUCT_OFFSET( VipsInvertlut, in ) );
|
||||
|
||||
VIPS_ARG_INT( class, "size", 5,
|
||||
_( "Size" ),
|
||||
VIPS_ARG_INT( class, "size", 5,
|
||||
_( "Size" ),
|
||||
_( "LUT size to generate" ),
|
||||
VIPS_ARGUMENT_OPTIONAL_INPUT,
|
||||
G_STRUCT_OFFSET( VipsInvertlut, size ),
|
||||
@ -303,13 +303,13 @@ vips_invertlut_class_init( VipsInvertlutClass *class )
|
||||
static void
|
||||
vips_invertlut_init( VipsInvertlut *lut )
|
||||
{
|
||||
lut->size = 256;
|
||||
lut->size = 256;
|
||||
}
|
||||
|
||||
/**
|
||||
* vips_invertlut: (method)
|
||||
* @in: input mask
|
||||
* @out: (out): utput LUT
|
||||
* @out: (out): output LUT
|
||||
* @...: %NULL-terminated list of optional named arguments
|
||||
*
|
||||
* Optional arguments:
|
||||
@ -320,9 +320,9 @@ vips_invertlut_init( VipsInvertlut *lut )
|
||||
* will map reals to targets. Handy for linearising images from
|
||||
* measurements of a colour chart. All values in [0,1]. Piecewise linear
|
||||
* interpolation, extrapolate head and tail to 0 and 1.
|
||||
*
|
||||
*
|
||||
* Eg. input like this:
|
||||
*
|
||||
*
|
||||
* <tgroup cols='4' align='left' colsep='1' rowsep='1'>
|
||||
* <tbody>
|
||||
* <row>
|
||||
@ -352,12 +352,12 @@ vips_invertlut_init( VipsInvertlut *lut )
|
||||
*
|
||||
* Means a patch with 10% reflectance produces an image with 20% in
|
||||
* channel 1, 30% in channel 2, and 10% in channel 3, and so on.
|
||||
*
|
||||
*
|
||||
* Inputs don't need to be sorted (we do that). Generate any precision
|
||||
* LUT, default to 256 elements.
|
||||
*
|
||||
* It won't work too well for non-monotonic camera responses
|
||||
* (we should fix this). Interpolation is simple piecewise linear; we ought to
|
||||
* It won't work too well for non-monotonic camera responses
|
||||
* (we should fix this). Interpolation is simple piecewise linear; we ought to
|
||||
* do something better really.
|
||||
*
|
||||
* See also: vips_buildlut().
|
||||
|
||||
Loading…
Reference in New Issue
Block a user