rename UCS as CMC
This commit is contained in:
John Cupitt
parent
63a06e5f81
commit
f5790be152
@ -8,6 +8,7 @@
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as classes
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- added vips_colour_convert(), replaces all derived conversions
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- faster and more accurate sRGB <-> XYZ conversion
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- rename UCS colourspace as CMC
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- dzsave can write zoomify and google maps layout as well
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- tilecache supports threaded access
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- openslide2vips gets underlying tile size from openslide
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2
TODO
2
TODO
@ -3,8 +3,6 @@
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- add mono as a colourspace? also rad?
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- rename INTERPRETATION_UCS to _CMC
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- something to test if an image is in a supported colourspace?
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at the moment we only look at interpretation, but for things like labq
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@ -1,4 +1,4 @@
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/* im_LCh2UCS
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/* im_LCh2CMC
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*
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* Modified:
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* 2/11/09
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@ -45,67 +45,67 @@
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#include "colour.h"
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typedef VipsColourSpace VipsLCh2UCS;
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typedef VipsColourSpaceClass VipsLCh2UCSClass;
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typedef VipsColourSpace VipsLCh2CMC;
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typedef VipsColourSpaceClass VipsLCh2CMCClass;
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G_DEFINE_TYPE( VipsLCh2UCS, vips_LCh2UCS, VIPS_TYPE_COLOUR_SPACE );
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G_DEFINE_TYPE( VipsLCh2CMC, vips_LCh2CMC, VIPS_TYPE_COLOUR_SPACE );
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/**
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* vips_col_L2Lucs:
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* vips_col_L2Lcmc:
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* @L: CIE L*
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*
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* Calculate Lucs from L.
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* Calculate Lcmc from L.
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*
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* Returns: Lucs
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* Returns: Lcmc
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*/
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float
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vips_col_L2Lucs( float L )
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vips_col_L2Lcmc( float L )
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{
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float Lucs;
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float Lcmc;
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if( L >= 16.0 )
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Lucs = (21.75 * log( L ) + 0.3838 * L - 38.54);
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Lcmc = (21.75 * log( L ) + 0.3838 * L - 38.54);
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else
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Lucs = 1.744 * L;
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Lcmc = 1.744 * L;
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return( Lucs );
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return( Lcmc );
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}
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/**
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* vips_col_C2Cucs:
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* vips_col_C2Ccmc:
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* @C: Chroma
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*
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* Calculate Cucs from C.
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* Calculate Ccmc from C.
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*
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* Returns: Cucs.
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* Returns: Ccmc.
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*/
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float
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vips_col_C2Cucs( float C )
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vips_col_C2Ccmc( float C )
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{
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float Cucs;
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float Ccmc;
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Cucs = 0.162 * C + 10.92 * log( 0.638 + 0.07216 * C ) + 4.907;
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if( Cucs < 0 )
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Cucs = 0;
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Ccmc = 0.162 * C + 10.92 * log( 0.638 + 0.07216 * C ) + 4.907;
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if( Ccmc < 0 )
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Ccmc = 0;
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return( Cucs );
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return( Ccmc );
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}
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/**
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* vips_col_Ch2hucs:
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* vips_col_Ch2hcmc:
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* @C: Chroma
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* @h: Hue (degrees)
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*
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* Calculate hucs from C and h.
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* Calculate hcmc from C and h.
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*
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* Returns: hucs.
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* Returns: hcmc.
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*/
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float
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vips_col_Ch2hucs( float C, float h )
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vips_col_Ch2hcmc( float C, float h )
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{
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float P, D, f, g;
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float k4, k5, k6, k7, k8;
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float hucs;
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float hcmc;
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if( h < 49.1 ) {
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k4 = 133.87;
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@ -140,13 +140,13 @@ vips_col_Ch2hucs( float C, float h )
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D = k4 + k5 * P * pow( fabs( P ), k6 );
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g = C * C * C * C;
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f = sqrt( g / (g + 1900.0) );
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hucs = h + D * f;
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hcmc = h + D * f;
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return( hucs );
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return( hcmc );
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}
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static void
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vips_LCh2UCS_line( VipsColour *colour, VipsPel *out, VipsPel **in, int width )
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vips_LCh2CMC_line( VipsColour *colour, VipsPel *out, VipsPel **in, int width )
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{
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float *p = (float *) in[0];
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float *q = (float *) out;
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@ -160,51 +160,51 @@ vips_LCh2UCS_line( VipsColour *colour, VipsPel *out, VipsPel **in, int width )
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p += 3;
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q[0] = vips_col_L2Lucs( L );
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q[1] = vips_col_C2Cucs( C );
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q[2] = vips_col_Ch2hucs( C, h );
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q[0] = vips_col_L2Lcmc( L );
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q[1] = vips_col_C2Ccmc( C );
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q[2] = vips_col_Ch2hcmc( C, h );
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q += 3;
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}
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}
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static void
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vips_LCh2UCS_class_init( VipsLCh2UCSClass *class )
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vips_LCh2CMC_class_init( VipsLCh2CMCClass *class )
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{
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VipsObjectClass *object_class = (VipsObjectClass *) class;
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VipsColourClass *colour_class = VIPS_COLOUR_CLASS( class );
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object_class->nickname = "LCh2UCS";
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object_class->description = _( "transform LCh to UCS" );
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object_class->nickname = "LCh2CMC";
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object_class->description = _( "transform LCh to CMC" );
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colour_class->process_line = vips_LCh2UCS_line;
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colour_class->process_line = vips_LCh2CMC_line;
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}
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static void
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vips_LCh2UCS_init( VipsLCh2UCS *LCh2UCS )
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vips_LCh2CMC_init( VipsLCh2CMC *LCh2CMC )
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{
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VipsColour *colour = VIPS_COLOUR( LCh2UCS );
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VipsColour *colour = VIPS_COLOUR( LCh2CMC );
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colour->interpretation = VIPS_INTERPRETATION_UCS;
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colour->interpretation = VIPS_INTERPRETATION_CMC;
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}
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/**
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* vips_LCh2UCS:
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* vips_LCh2CMC:
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* @in: input image
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* @out: output image
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*
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* Turn LCh to UCS.
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* Turn LCh to CMC.
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*
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* Returns: 0 on success, -1 on error
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*/
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int
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vips_LCh2UCS( VipsImage *in, VipsImage **out, ... )
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vips_LCh2CMC( VipsImage *in, VipsImage **out, ... )
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{
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va_list ap;
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int result;
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va_start( ap, out );
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result = vips_call_split( "LCh2UCS", ap, in, out );
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result = vips_call_split( "LCh2CMC", ap, in, out );
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va_end( ap );
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return( result );
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@ -1,4 +1,4 @@
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/* Turn UCS to LCh
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/* Turn CMC to LCh
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*
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* 15/11/94 JC
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* - error messages added
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@ -8,7 +8,7 @@
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* 2/11/09
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* - gtkdoc
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* 30/11/09
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* - argh, im_col_make_tables_UCS(); missing, thanks Peter
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* - argh, im_col_make_tables_CMC(); missing, thanks Peter
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* 19/9/12
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* - redone as a class
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*/
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@ -57,10 +57,10 @@ static float LI[1001];
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static float CI[3001];
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static float hI[101][361];
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typedef VipsColourSpace VipsUCS2LCh;
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typedef VipsColourSpaceClass VipsUCS2LChClass;
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typedef VipsColourSpace VipsCMC2LCh;
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typedef VipsColourSpaceClass VipsCMC2LChClass;
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G_DEFINE_TYPE( VipsUCS2LCh, vips_UCS2LCh, VIPS_TYPE_COLOUR_SPACE );
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G_DEFINE_TYPE( VipsCMC2LCh, vips_CMC2LCh, VIPS_TYPE_COLOUR_SPACE );
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/* Generate LI (inverse) tables.
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*/
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@ -71,7 +71,7 @@ make_LI( void )
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float Ll[1001];
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for( i = 0; i < 1001; i++ )
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Ll[i] = vips_col_L2Lucs( i / 10.0 );
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Ll[i] = vips_col_L2Lcmc( i / 10.0 );
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for( i = 0; i < 1001; i++ ) {
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int j;
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@ -84,7 +84,7 @@ make_LI( void )
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}
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}
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/* Generate Cucs table.
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/* Generate Ccmc table.
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*/
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static void
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make_CI( void )
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@ -93,7 +93,7 @@ make_CI( void )
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float Cl[3001];
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for( i = 0; i < 3001; i++ )
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Cl[i] = vips_col_C2Cucs( i / 10.0 );
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Cl[i] = vips_col_C2Ccmc( i / 10.0 );
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for( i = 0; i < 3001; i++ ) {
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int j;
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@ -105,7 +105,7 @@ make_CI( void )
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}
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}
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/* The difficult one: hucs.
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/* The difficult one: hcmc.
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*/
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static void
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make_hI( void )
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@ -115,7 +115,7 @@ make_hI( void )
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for( i = 0; i < 361; i++ )
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for( j = 0; j < 101; j++ )
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hl[j][i] = vips_col_Ch2hucs( j * 2.0, i );
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hl[j][i] = vips_col_Ch2hcmc( j * 2.0, i );
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for( j = 0; j < 101; j++ ) {
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for( i = 0; i < 361; i++ ) {
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@ -130,61 +130,61 @@ make_hI( void )
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}
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/**
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* vips_col_Lucs2L:
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* @Lucs: L ucs
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* vips_col_Lcmc2L:
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* @Lcmc: L cmc
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*
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* Calculate L from Lucs using a table. Call vips_col_make_tables_UCS() at
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* Calculate L from Lcmc using a table. Call vips_col_make_tables_CMC() at
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* least once before using this function.
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*
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* Returns: L*
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*/
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float
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vips_col_Lucs2L( float Lucs )
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vips_col_Lcmc2L( float Lcmc )
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{
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int known;
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known = floor( Lucs * 10.0 );
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known = floor( Lcmc * 10.0 );
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known = VIPS_CLIP( 0, known, 1000 );
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return( LI[known] +
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(LI[known + 1] - LI[known]) * (Lucs * 10.0 - known) );
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(LI[known + 1] - LI[known]) * (Lcmc * 10.0 - known) );
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}
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/**
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* vips_col_Cucs2C:
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* @Cucs: Cucs
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* vips_col_Ccmc2C:
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* @Ccmc: Ccmc
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*
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* Calculate C from Cucs using a table.
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* Call vips_col_make_tables_UCS() at
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* Calculate C from Ccmc using a table.
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* Call vips_col_make_tables_CMC() at
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* least once before using this function.
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*
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* Returns: C.
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*/
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float
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vips_col_Cucs2C( float Cucs )
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vips_col_Ccmc2C( float Ccmc )
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{
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int known;
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known = floor( Cucs * 10.0 );
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known = floor( Ccmc * 10.0 );
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known = VIPS_CLIP( 0, known, 3000 );
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return( CI[known] +
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(CI[known + 1] - CI[known]) * (Cucs * 10.0 - known) );
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(CI[known + 1] - CI[known]) * (Ccmc * 10.0 - known) );
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}
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/**
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* vips_col_Chucs2h:
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* vips_col_Chcmc2h:
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* @C: Chroma
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* @hucs: Hue ucs (degrees)
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* @hcmc: Hue cmc (degrees)
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*
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* Calculate h from C and hucs, using a table.
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* Call vips_col_make_tables_UCS() at
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* Calculate h from C and hcmc, using a table.
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* Call vips_col_make_tables_CMC() at
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* least once before using this function.
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*
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* Returns: h.
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*/
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float
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vips_col_Chucs2h( float C, float hucs )
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vips_col_Chcmc2h( float C, float hcmc )
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{
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int r;
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int known;
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@ -194,11 +194,11 @@ vips_col_Chucs2h( float C, float hucs )
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r = (int) ((C + 1.0) / 2.0);
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r = VIPS_CLIP( 0, r, 100 );
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known = floor( hucs );
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known = floor( hcmc );
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known = VIPS_CLIP( 0, known, 360 );
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return( hI[r][known] +
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(hI[r][(known + 1) % 360] - hI[r][known]) * (hucs - known) );
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(hI[r][(known + 1) % 360] - hI[r][known]) * (hcmc - known) );
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}
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static void *
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@ -212,12 +212,12 @@ tables_init( void *client )
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}
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/**
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* vips_col_make_tables_UCS:
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* vips_col_make_tables_CMC:
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*
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* Make the lookup tables for ucs.
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* Make the lookup tables for cmc.
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*/
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void
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vips_col_make_tables_UCS( void )
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vips_col_make_tables_CMC( void )
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{
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static GOnce once = G_ONCE_INIT;
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@ -227,7 +227,7 @@ vips_col_make_tables_UCS( void )
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/* Process a buffer of data.
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*/
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void
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vips_UCS2LCh_line( VipsColour *colour, VipsPel *out, VipsPel **in, int width )
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vips_CMC2LCh_line( VipsColour *colour, VipsPel *out, VipsPel **in, int width )
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{
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float *p = (float *) in[0];
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float *q = (float *) out;
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@ -235,15 +235,15 @@ vips_UCS2LCh_line( VipsColour *colour, VipsPel *out, VipsPel **in, int width )
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int x;
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for( x = 0; x < width; x++ ) {
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float Lucs = p[0];
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float Cucs = p[1];
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float hucs = p[2];
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float Lcmc = p[0];
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float Ccmc = p[1];
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float hcmc = p[2];
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/* Turn from UCS.
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/* Turn from CMC.
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*/
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float C = vips_col_Cucs2C( Cucs );
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float h = vips_col_Chucs2h( C, hucs );
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float L = vips_col_Lucs2L( Lucs );
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float C = vips_col_Ccmc2C( Ccmc );
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float h = vips_col_Chcmc2h( C, hcmc );
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float L = vips_col_Lcmc2L( Lcmc );
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p += 3;
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@ -256,43 +256,43 @@ vips_UCS2LCh_line( VipsColour *colour, VipsPel *out, VipsPel **in, int width )
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}
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static void
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vips_UCS2LCh_class_init( VipsUCS2LChClass *class )
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vips_CMC2LCh_class_init( VipsCMC2LChClass *class )
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{
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VipsObjectClass *object_class = (VipsObjectClass *) class;
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VipsColourClass *colour_class = VIPS_COLOUR_CLASS( class );
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object_class->nickname = "UCS2LCh";
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object_class->description = _( "transform LCh to UCS" );
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object_class->nickname = "CMC2LCh";
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object_class->description = _( "transform LCh to CMC" );
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colour_class->process_line = vips_UCS2LCh_line;
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colour_class->process_line = vips_CMC2LCh_line;
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}
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static void
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vips_UCS2LCh_init( VipsUCS2LCh *UCS2LCh )
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vips_CMC2LCh_init( VipsCMC2LCh *CMC2LCh )
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{
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VipsColour *colour = VIPS_COLOUR( UCS2LCh );
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VipsColour *colour = VIPS_COLOUR( CMC2LCh );
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vips_col_make_tables_UCS();
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vips_col_make_tables_CMC();
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colour->interpretation = VIPS_INTERPRETATION_LCH;
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}
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/**
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* vips_UCS2LCh:
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* vips_CMC2LCh:
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* @in: input image
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* @out: output image
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*
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* Turn LCh to UCS.
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* Turn LCh to CMC.
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*
|
||||
* Returns: 0 on success, -1 on error
|
||||
*/
|
||||
int
|
||||
vips_UCS2LCh( VipsImage *in, VipsImage **out, ... )
|
||||
vips_CMC2LCh( VipsImage *in, VipsImage **out, ... )
|
||||
{
|
||||
va_list ap;
|
||||
int result;
|
||||
|
||||
va_start( ap, out );
|
||||
result = vips_call_split( "UCS2LCh", ap, in, out );
|
||||
result = vips_call_split( "CMC2LCh", ap, in, out );
|
||||
va_end( ap );
|
||||
|
||||
return( result );
|
||||
|
||||
@ -611,7 +611,7 @@ typedef struct _VipsColourRoute {
|
||||
#define LAB VIPS_INTERPRETATION_LAB
|
||||
#define LABQ VIPS_INTERPRETATION_LABQ
|
||||
#define LCH VIPS_INTERPRETATION_LCH
|
||||
#define UCS VIPS_INTERPRETATION_UCS
|
||||
#define CMC VIPS_INTERPRETATION_CMC
|
||||
#define LABS VIPS_INTERPRETATION_LABS
|
||||
#define sRGB VIPS_INTERPRETATION_sRGB
|
||||
#define YXY VIPS_INTERPRETATION_YXY
|
||||
@ -622,7 +622,7 @@ static VipsColourRoute vips_colour_routes[] = {
|
||||
{ XYZ, LAB, { vips_XYZ2Lab, NULL } },
|
||||
{ XYZ, LABQ, { vips_XYZ2Lab, vips_Lab2LabQ, NULL } },
|
||||
{ XYZ, LCH, { vips_XYZ2Lab, vips_Lab2LCh, NULL } },
|
||||
{ XYZ, UCS, { vips_XYZ2Lab, vips_Lab2LCh, vips_LCh2UCS, NULL } },
|
||||
{ XYZ, CMC, { vips_XYZ2Lab, vips_Lab2LCh, vips_LCh2CMC, NULL } },
|
||||
{ XYZ, LABS, { vips_XYZ2Lab, vips_Lab2LabS, NULL } },
|
||||
{ XYZ, sRGB, { vips_XYZ2sRGB, NULL } },
|
||||
{ XYZ, YXY, { vips_XYZ2Yxy, NULL } },
|
||||
@ -630,7 +630,7 @@ static VipsColourRoute vips_colour_routes[] = {
|
||||
{ LAB, XYZ, { vips_Lab2XYZ, NULL } },
|
||||
{ LAB, LABQ, { vips_Lab2LabQ, NULL } },
|
||||
{ LAB, LCH, { vips_Lab2LCh, NULL } },
|
||||
{ LAB, UCS, { vips_Lab2LCh, vips_LCh2UCS, NULL } },
|
||||
{ LAB, CMC, { vips_Lab2LCh, vips_LCh2CMC, NULL } },
|
||||
{ LAB, LABS, { vips_Lab2LabS, NULL } },
|
||||
{ LAB, sRGB, { vips_Lab2XYZ, vips_XYZ2sRGB, NULL } },
|
||||
{ LAB, YXY, { vips_Lab2XYZ, vips_XYZ2Yxy, NULL } },
|
||||
@ -638,7 +638,7 @@ static VipsColourRoute vips_colour_routes[] = {
|
||||
{ LABQ, XYZ, { vips_LabQ2Lab, vips_Lab2XYZ, NULL } },
|
||||
{ LABQ, LAB, { vips_LabQ2Lab, NULL } },
|
||||
{ LABQ, LCH, { vips_LabQ2Lab, vips_Lab2LCh, NULL } },
|
||||
{ LABQ, UCS, { vips_LabQ2Lab, vips_Lab2LCh, vips_LCh2UCS, NULL } },
|
||||
{ LABQ, CMC, { vips_LabQ2Lab, vips_Lab2LCh, vips_LCh2CMC, NULL } },
|
||||
{ LABQ, LABS, { vips_LabQ2LabS, NULL } },
|
||||
{ LABQ, sRGB, { vips_LabQ2sRGB, NULL } },
|
||||
{ LABQ, YXY, { vips_LabQ2Lab, vips_Lab2XYZ, vips_XYZ2Yxy, NULL } },
|
||||
@ -646,26 +646,26 @@ static VipsColourRoute vips_colour_routes[] = {
|
||||
{ LCH, XYZ, { vips_LCh2Lab, vips_Lab2XYZ, NULL } },
|
||||
{ LCH, LAB, { vips_LCh2Lab, NULL } },
|
||||
{ LCH, LABQ, { vips_LCh2Lab, vips_Lab2LabQ, NULL } },
|
||||
{ LCH, UCS, { vips_LCh2UCS, NULL } },
|
||||
{ LCH, CMC, { vips_LCh2CMC, NULL } },
|
||||
{ LCH, LABS, { vips_LCh2Lab, vips_Lab2LabS, NULL } },
|
||||
{ LCH, sRGB, { vips_LCh2Lab, vips_Lab2XYZ, vips_XYZ2sRGB, NULL } },
|
||||
{ LCH, YXY, { vips_LCh2Lab, vips_Lab2XYZ, vips_XYZ2Yxy, NULL } },
|
||||
|
||||
{ UCS, XYZ, { vips_UCS2LCh, vips_LCh2Lab, vips_Lab2XYZ, NULL } },
|
||||
{ UCS, LAB, { vips_UCS2LCh, vips_LCh2Lab, NULL } },
|
||||
{ UCS, LABQ, { vips_UCS2LCh, vips_LCh2Lab, vips_Lab2LabQ, NULL } },
|
||||
{ UCS, LCH, { vips_UCS2LCh, NULL } },
|
||||
{ UCS, LABS, { vips_UCS2LCh, vips_LCh2Lab, vips_Lab2LabS, NULL } },
|
||||
{ UCS, sRGB, { vips_UCS2LCh, vips_LCh2Lab, vips_Lab2XYZ,
|
||||
{ CMC, XYZ, { vips_CMC2LCh, vips_LCh2Lab, vips_Lab2XYZ, NULL } },
|
||||
{ CMC, LAB, { vips_CMC2LCh, vips_LCh2Lab, NULL } },
|
||||
{ CMC, LABQ, { vips_CMC2LCh, vips_LCh2Lab, vips_Lab2LabQ, NULL } },
|
||||
{ CMC, LCH, { vips_CMC2LCh, NULL } },
|
||||
{ CMC, LABS, { vips_CMC2LCh, vips_LCh2Lab, vips_Lab2LabS, NULL } },
|
||||
{ CMC, sRGB, { vips_CMC2LCh, vips_LCh2Lab, vips_Lab2XYZ,
|
||||
vips_XYZ2sRGB, NULL } },
|
||||
{ UCS, YXY, { vips_UCS2LCh, vips_LCh2Lab, vips_Lab2XYZ,
|
||||
{ CMC, YXY, { vips_CMC2LCh, vips_LCh2Lab, vips_Lab2XYZ,
|
||||
vips_XYZ2Yxy, NULL } },
|
||||
|
||||
{ LABS, XYZ, { vips_LabS2Lab, vips_Lab2XYZ, NULL } },
|
||||
{ LABS, LAB, { vips_LabS2Lab, NULL } },
|
||||
{ LABS, LABQ, { vips_LabS2LabQ, NULL } },
|
||||
{ LABS, LCH, { vips_LabS2Lab, vips_Lab2LCh, NULL } },
|
||||
{ LABS, UCS, { vips_LabS2Lab, vips_Lab2LCh, vips_LCh2UCS, NULL } },
|
||||
{ LABS, CMC, { vips_LabS2Lab, vips_Lab2LCh, vips_LCh2CMC, NULL } },
|
||||
{ LABS, sRGB, { vips_LabS2Lab, vips_Lab2XYZ, vips_XYZ2sRGB, NULL } },
|
||||
{ LABS, YXY, { vips_LabS2Lab, vips_Lab2XYZ, vips_XYZ2Yxy, NULL } },
|
||||
|
||||
@ -673,8 +673,8 @@ static VipsColourRoute vips_colour_routes[] = {
|
||||
{ sRGB, LAB, { vips_sRGB2XYZ, vips_XYZ2Lab, NULL } },
|
||||
{ sRGB, LABQ, { vips_sRGB2XYZ, vips_XYZ2Lab, vips_Lab2LabQ, NULL } },
|
||||
{ sRGB, LCH, { vips_sRGB2XYZ, vips_XYZ2Lab, vips_Lab2LCh, NULL } },
|
||||
{ sRGB, UCS, { vips_sRGB2XYZ, vips_XYZ2Lab, vips_Lab2LCh,
|
||||
vips_LCh2UCS, NULL } },
|
||||
{ sRGB, CMC, { vips_sRGB2XYZ, vips_XYZ2Lab, vips_Lab2LCh,
|
||||
vips_LCh2CMC, NULL } },
|
||||
{ sRGB, LABS, { vips_sRGB2XYZ, vips_XYZ2Lab, vips_Lab2LabS, NULL } },
|
||||
{ sRGB, YXY, { vips_sRGB2XYZ, vips_XYZ2Yxy, NULL } },
|
||||
|
||||
@ -682,8 +682,8 @@ static VipsColourRoute vips_colour_routes[] = {
|
||||
{ YXY, LAB, { vips_Yxy2XYZ, vips_XYZ2Lab, NULL } },
|
||||
{ YXY, LABQ, { vips_Yxy2XYZ, vips_XYZ2Lab, vips_Lab2LabQ, NULL } },
|
||||
{ YXY, LCH, { vips_Yxy2XYZ, vips_XYZ2Lab, vips_Lab2LCh, NULL } },
|
||||
{ YXY, UCS, { vips_Yxy2XYZ, vips_XYZ2Lab, vips_Lab2LCh,
|
||||
vips_LCh2UCS, NULL } },
|
||||
{ YXY, CMC, { vips_Yxy2XYZ, vips_XYZ2Lab, vips_Lab2LCh,
|
||||
vips_LCh2CMC, NULL } },
|
||||
{ YXY, LABS, { vips_Yxy2XYZ, vips_XYZ2Lab, vips_Lab2LabS, NULL } },
|
||||
{ YXY, sRGB, { vips_Yxy2XYZ, vips_XYZ2sRGB, NULL } },
|
||||
};
|
||||
@ -828,8 +828,8 @@ vips_colour_operation_init( void )
|
||||
extern GType vips_XYZ2Lab_get_type( void );
|
||||
extern GType vips_Lab2LCh_get_type( void );
|
||||
extern GType vips_LCh2Lab_get_type( void );
|
||||
extern GType vips_LCh2UCS_get_type( void );
|
||||
extern GType vips_UCS2LCh_get_type( void );
|
||||
extern GType vips_LCh2CMC_get_type( void );
|
||||
extern GType vips_CMC2LCh_get_type( void );
|
||||
extern GType vips_Yxy2XYZ_get_type( void );
|
||||
extern GType vips_XYZ2Yxy_get_type( void );
|
||||
extern GType vips_LabQ2Lab_get_type( void );
|
||||
@ -857,8 +857,8 @@ vips_colour_operation_init( void )
|
||||
vips_XYZ2Lab_get_type();
|
||||
vips_Lab2LCh_get_type();
|
||||
vips_LCh2Lab_get_type();
|
||||
vips_LCh2UCS_get_type();
|
||||
vips_UCS2LCh_get_type();
|
||||
vips_LCh2CMC_get_type();
|
||||
vips_CMC2LCh_get_type();
|
||||
vips_XYZ2Yxy_get_type();
|
||||
vips_Yxy2XYZ_get_type();
|
||||
vips_LabQ2Lab_get_type();
|
||||
|
||||
@ -61,7 +61,7 @@
|
||||
* <emphasis>XYZ</emphasis>, <emphasis>Yxy</emphasis>,
|
||||
* <emphasis>Lab</emphasis>, <emphasis>LabQ</emphasis>,
|
||||
* <emphasis>LabS</emphasis>, <emphasis>LCh</emphasis> and
|
||||
* <emphasis>UCS</emphasis>). Secondly, there are a set of operations for
|
||||
* <emphasis>CMC</emphasis>). Secondly, there are a set of operations for
|
||||
* calculating colour difference metrics. Finally, VIPS wraps LittleCMS and
|
||||
* uses it to provide a set of operations for reading and writing images with
|
||||
* ICC profiles.
|
||||
@ -150,12 +150,12 @@
|
||||
* </listitem>
|
||||
* <listitem>
|
||||
* <para>
|
||||
* <emphasis><code>UCS</code></emphasis>
|
||||
* <emphasis><code>CMC</code></emphasis>
|
||||
*
|
||||
* A colour space based on the CMC(1:1) colour difference measurement.
|
||||
* This is a highly uniform colour space, much better than CIELAB for
|
||||
* expressing small differences. Conversions to and from
|
||||
* <code>UCS</code> are extremely slow.
|
||||
* <code>CMC</code> are extremely slow.
|
||||
* </para>
|
||||
* </listitem>
|
||||
* </itemizedlist>
|
||||
|
||||
@ -66,7 +66,7 @@ G_DEFINE_TYPE( VipsdE76, vips_dE76, VIPS_TYPE_COLOUR_DIFFERENCE );
|
||||
* @a2: Input coordinate 2
|
||||
* @b2: Input coordinate 2
|
||||
*
|
||||
* Pythagorean distance between two points in colour space. Lab/XYZ/UCS etc.
|
||||
* Pythagorean distance between two points in colour space. Lab/XYZ/CMC etc.
|
||||
*/
|
||||
float
|
||||
vips_pythagoras( float L1, float a1, float b1, float L2, float a2, float b2 )
|
||||
|
||||
@ -67,7 +67,7 @@ vips_dECMC_init( VipsdECMC *dECMC )
|
||||
{
|
||||
VipsColourDifference *difference = VIPS_COLOUR_DIFFERENCE( dECMC );
|
||||
|
||||
difference->interpretation = VIPS_INTERPRETATION_UCS;
|
||||
difference->interpretation = VIPS_INTERPRETATION_CMC;
|
||||
}
|
||||
|
||||
/**
|
||||
@ -76,11 +76,11 @@ vips_dECMC_init( VipsdECMC *dECMC )
|
||||
* @right: second input image
|
||||
* @out: output image
|
||||
*
|
||||
* Calculate dE CMC. The input images are transformed to UCS colour space and
|
||||
* Calculate dE CMC. The input images are transformed to CMC colour space and
|
||||
* the euclidean distance between corresponding pixels calculated.
|
||||
*
|
||||
* To calculate a colour difference with values for (l:c) other than (1:1),
|
||||
* transform the two source images to UCS yourself, scale the channels
|
||||
* transform the two source images to CMC yourself, scale the channels
|
||||
* appropriately, and call this function.
|
||||
*
|
||||
* See also: vips_colour_convert()
|
||||
|
||||
@ -2265,7 +2265,7 @@ im_LCh2UCS( IMAGE *in, IMAGE *out )
|
||||
{
|
||||
VipsImage *x;
|
||||
|
||||
if( vips_LCh2UCS( in, &x, NULL ) )
|
||||
if( vips_LCh2CMC( in, &x, NULL ) )
|
||||
return( -1 );
|
||||
if( im_copy( x, out ) ) {
|
||||
g_object_unref( x );
|
||||
@ -2281,7 +2281,7 @@ im_UCS2LCh( IMAGE *in, IMAGE *out )
|
||||
{
|
||||
VipsImage *x;
|
||||
|
||||
if( vips_UCS2LCh( in, &x, NULL ) )
|
||||
if( vips_CMC2LCh( in, &x, NULL ) )
|
||||
return( -1 );
|
||||
if( im_copy( x, out ) ) {
|
||||
g_object_unref( x );
|
||||
@ -2661,15 +2661,6 @@ im_LabQ2XYZ( IMAGE *in, IMAGE *out )
|
||||
return( 0 );
|
||||
}
|
||||
|
||||
/**
|
||||
* im_Lab2UCS:
|
||||
* @in: input image
|
||||
* @out: output image
|
||||
*
|
||||
* Convert an image from Lab to UCS.
|
||||
*
|
||||
* Returns: 0 on success, -1 on error.
|
||||
*/
|
||||
int
|
||||
im_Lab2UCS( IMAGE *in, IMAGE *out )
|
||||
{
|
||||
@ -2683,15 +2674,6 @@ im_Lab2UCS( IMAGE *in, IMAGE *out )
|
||||
return( 0 );
|
||||
}
|
||||
|
||||
/**
|
||||
* im_UCS2Lab:
|
||||
* @in: input image
|
||||
* @out: output image
|
||||
*
|
||||
* Convert an image from UCS to Lab.
|
||||
*
|
||||
* Returns: 0 on success, -1 on error.
|
||||
*/
|
||||
int
|
||||
im_UCS2Lab( IMAGE *in, IMAGE *out )
|
||||
{
|
||||
@ -2705,15 +2687,6 @@ im_UCS2Lab( IMAGE *in, IMAGE *out )
|
||||
return( 0 );
|
||||
}
|
||||
|
||||
/**
|
||||
* im_UCS2XYZ:
|
||||
* @in: input image
|
||||
* @out: output image
|
||||
*
|
||||
* Convert an image from UCS to XYZ.
|
||||
*
|
||||
* Returns: 0 on success, -1 on error.
|
||||
*/
|
||||
int
|
||||
im_UCS2XYZ( IMAGE *in, IMAGE *out )
|
||||
{
|
||||
@ -2727,16 +2700,6 @@ im_UCS2XYZ( IMAGE *in, IMAGE *out )
|
||||
return( 0 );
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* im_XY2UCS:
|
||||
* @in: input image
|
||||
* @out: output image
|
||||
*
|
||||
* Convert an image from XYZ to UCS.
|
||||
*
|
||||
* Returns: 0 on success, -1 on error.
|
||||
*/
|
||||
int
|
||||
im_XYZ2UCS( IMAGE *in, IMAGE *out )
|
||||
{
|
||||
@ -2750,16 +2713,6 @@ im_XYZ2UCS( IMAGE *in, IMAGE *out )
|
||||
return( 0 );
|
||||
}
|
||||
|
||||
/**
|
||||
* im_dE_fromXYZ:
|
||||
* @in1: first input image
|
||||
* @in2: second input image
|
||||
* @out: output image
|
||||
*
|
||||
* Calculate CIELAB dE 1976 from a pair of XYZ images.
|
||||
*
|
||||
* Returns: 0 on success, -1 on error.
|
||||
*/
|
||||
int
|
||||
im_dE_fromXYZ( IMAGE *in1, IMAGE *in2, IMAGE *out )
|
||||
{
|
||||
|
||||
@ -134,7 +134,7 @@ int vips_Lab2LCh( VipsImage *in, VipsImage **out, ... )
|
||||
__attribute__((sentinel));
|
||||
int vips_Yxy2Lab( VipsImage *in, VipsImage **out, ... )
|
||||
__attribute__((sentinel));
|
||||
int vips_UCS2XYZ( VipsImage *in, VipsImage **out, ... )
|
||||
int vips_CMC2XYZ( VipsImage *in, VipsImage **out, ... )
|
||||
__attribute__((sentinel));
|
||||
int vips_Lab2XYZ( VipsImage *in, VipsImage **out, ... )
|
||||
__attribute__((sentinel));
|
||||
@ -144,9 +144,9 @@ int vips_XYZ2sRGB( VipsImage *in, VipsImage **out, ... )
|
||||
__attribute__((sentinel));
|
||||
int vips_sRGB2XYZ( VipsImage *in, VipsImage **out, ... )
|
||||
__attribute__((sentinel));
|
||||
int vips_LCh2UCS( VipsImage *in, VipsImage **out, ... )
|
||||
int vips_LCh2CMC( VipsImage *in, VipsImage **out, ... )
|
||||
__attribute__((sentinel));
|
||||
int vips_UCS2LCh( VipsImage *in, VipsImage **out, ... )
|
||||
int vips_CMC2LCh( VipsImage *in, VipsImage **out, ... )
|
||||
__attribute__((sentinel));
|
||||
int vips_XYZ2Yxy( VipsImage *in, VipsImage **out, ... )
|
||||
__attribute__((sentinel));
|
||||
@ -183,14 +183,14 @@ double vips_col_ab2h( double a, double b );
|
||||
void vips_col_ab2Ch( float a, float b, float *C, float *h );
|
||||
void vips_col_Ch2ab( float C, float h, float *a, float *b );
|
||||
|
||||
float vips_col_L2Lucs( float L );
|
||||
float vips_col_C2Cucs( float C );
|
||||
float vips_col_Ch2hucs( float C, float h );
|
||||
float vips_col_L2Lcmc( float L );
|
||||
float vips_col_C2Ccmc( float C );
|
||||
float vips_col_Ch2hcmc( float C, float h );
|
||||
|
||||
void vips_col_make_tables_UCS( void );
|
||||
float vips_col_Lucs2L( float Lucs );
|
||||
float vips_col_Cucs2C( float Cucs );
|
||||
float vips_col_Chucs2h( float C, float hucs );
|
||||
void vips_col_make_tables_CMC( void );
|
||||
float vips_col_Lcmc2L( float Lcmc );
|
||||
float vips_col_Ccmc2C( float Ccmc );
|
||||
float vips_col_Chcmc2h( float C, float hcmc );
|
||||
|
||||
int vips_col_XYZ2sRGB( float X, float Y, float Z,
|
||||
int *r_ret, int *g_ret, int *b_ret,
|
||||
|
||||
@ -118,7 +118,7 @@ typedef enum {
|
||||
* @VIPS_INTERPRETATION_CMYK: the first four bands are in CMYK space
|
||||
* @VIPS_INTERPRETATION_LABQ: implies #VIPS_CODING_LABQ
|
||||
* @VIPS_INTERPRETATION_RGB: generic RGB space
|
||||
* @VIPS_INTERPRETATION_UCS: a uniform colourspace based on CMC
|
||||
* @VIPS_INTERPRETATION_CMC: a uniform colourspace based on CMC(1:1)
|
||||
* @VIPS_INTERPRETATION_LCH: pixels are in CIE LCh space
|
||||
* @VIPS_INTERPRETATION_LABS: CIE LAB coded as three signed 16-bit values
|
||||
* @VIPS_INTERPRETATION_sRGB: pixels are sRGB
|
||||
@ -148,7 +148,7 @@ typedef enum {
|
||||
VIPS_INTERPRETATION_CMYK = 15,
|
||||
VIPS_INTERPRETATION_LABQ = 16,
|
||||
VIPS_INTERPRETATION_RGB = 17,
|
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VIPS_INTERPRETATION_UCS = 18,
|
||||
VIPS_INTERPRETATION_CMC = 18,
|
||||
VIPS_INTERPRETATION_LCH = 19,
|
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VIPS_INTERPRETATION_LABS = 21,
|
||||
VIPS_INTERPRETATION_sRGB = 22,
|
||||
|
||||
@ -86,15 +86,15 @@ extern "C" {
|
||||
#define im_col_ab2Ch vips_col_ab2Ch
|
||||
#define im_col_Ch2ab vips_col_Ch2ab
|
||||
|
||||
#define im_col_L2Lucs vips_col_L2Lucs
|
||||
#define im_col_C2Cucs vips_col_C2Cucs
|
||||
#define im_col_Ch2hucs vips_col_Ch2hucs
|
||||
#define im_col_L2Lucs vips_col_L2Lcmc
|
||||
#define im_col_C2Cucs vips_col_C2Ccmc
|
||||
#define im_col_Ch2hucs vips_col_Ch2hcmc
|
||||
#define im_col_pythagoras vips_pythagoras
|
||||
|
||||
#define im_col_make_tables_UCS vips_col_make_tables_UCS
|
||||
#define im_col_Lucs2L vips_col_Lucs2L
|
||||
#define im_col_Cucs2C vips_col_Cucs2C
|
||||
#define im_col_Chucs2h vips_col_Chucs2h
|
||||
#define im_col_make_tables_UCS vips_col_make_tables_CMC
|
||||
#define im_col_Lucs2L vips_col_Lcmc2L
|
||||
#define im_col_Cucs2C vips_col_Ccmc2C
|
||||
#define im_col_Chucs2h vips_col_Chcmc2h
|
||||
|
||||
#define PEL VipsPel
|
||||
|
||||
@ -130,7 +130,7 @@ extern "C" {
|
||||
#define IM_TYPE_CMYK VIPS_INTERPRETATION_CMYK
|
||||
#define IM_TYPE_LABQ VIPS_INTERPRETATION_LABQ
|
||||
#define IM_TYPE_RGB VIPS_INTERPRETATION_RGB
|
||||
#define IM_TYPE_UCS VIPS_INTERPRETATION_UCS
|
||||
#define IM_TYPE_UCS VIPS_INTERPRETATION_CMC
|
||||
#define IM_TYPE_LCH VIPS_INTERPRETATION_LCH
|
||||
#define IM_TYPE_LABS VIPS_INTERPRETATION_LABS
|
||||
#define IM_TYPE_sRGB VIPS_INTERPRETATION_sRGB
|
||||
|
||||
@ -448,7 +448,7 @@ vips_interpretation_get_type( void )
|
||||
{VIPS_INTERPRETATION_CMYK, "VIPS_INTERPRETATION_CMYK", "cmyk"},
|
||||
{VIPS_INTERPRETATION_LABQ, "VIPS_INTERPRETATION_LABQ", "labq"},
|
||||
{VIPS_INTERPRETATION_RGB, "VIPS_INTERPRETATION_RGB", "rgb"},
|
||||
{VIPS_INTERPRETATION_UCS, "VIPS_INTERPRETATION_UCS", "ucs"},
|
||||
{VIPS_INTERPRETATION_CMC, "VIPS_INTERPRETATION_CMC", "cmc"},
|
||||
{VIPS_INTERPRETATION_LCH, "VIPS_INTERPRETATION_LCH", "lch"},
|
||||
{VIPS_INTERPRETATION_LABS, "VIPS_INTERPRETATION_LABS", "labs"},
|
||||
{VIPS_INTERPRETATION_sRGB, "VIPS_INTERPRETATION_sRGB", "srgb"},
|
||||
|
||||
Loading…
Reference in New Issue
Block a user