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im_dE_fromdisp, im_dE_fromXYZ, im_dECMC_fromdisp - derived colour difference
functions
#include <vips/vips.h>
#include <vips/colour.h>
im_dE_fromdisp( in1, in2, out, display )
IMAGE *in1, *in2, *out;
struct im_col_display *display;
int im_dE_fromXYZ(in, out)
IMAGE *in, *out;
im_dECMC_fromdisp( in1, in2, out, display )
IMAGE *in1, *in2, *out;
struct im_col_display *display;
These functions are built on
the basic VIPS colour difference measurements as a convenience for the
programmer. See im_dE_fromLab(3)
for an explanation of the colour difference
metrics and the basic comparision functions.
The functions
return 0 on success and -1 on error.
im_col_XYZ2rgb(3)
, im_dE_fromLab(3)
,
im_LabQ2Lab(3)
, im_Lab2disp(3)
.
National Gallery and Birkbeck College,
1990 - 1993
K. Martinez - 2/12/1992
J. Cupitt - 21/7/93
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