3 // Copyright (C) 1998-2011 Marti Maria
5 // Permission is hereby granted, free of charge, to any person obtaining
6 // a copy of this software and associated documentation files (the "Software"),
7 // to deal in the Software without restriction, including without limitation
8 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 // and/or sell copies of the Software, and to permit persons to whom the Software
10 // is furnished to do so, subject to the following conditions:
12 // The above copyright notice and this permission notice shall be included in
13 // all copies or substantial portions of the Software.
15 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
17 // THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
19 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
20 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
28 double VecDist(cmsUInt8Number bin[3], cmsUInt8Number bout[3])
30 double rdist, gdist, bdist;
32 rdist = fabs((double) bout[0] - bin[0]);
33 gdist = fabs((double) bout[1] - bin[1]);
34 bdist = fabs((double) bout[2] - bin[2]);
36 return (sqrt((rdist*rdist + gdist*gdist + bdist*bdist)));
40 int main(int argc, char* argv[])
44 cmsUInt8Number RGB[3], RGB_OUT[3];
47 double err, SumX=0, SumX2=0, Peak = 0, n = 0;
51 printf("roundtrip <RGB icc profile>\n");
55 hProfile = cmsOpenProfileFromFile(argv[1], "r");
56 xform = cmsCreateTransform(hProfile,TYPE_RGB_8, hProfile, TYPE_RGB_8, INTENT_RELATIVE_COLORIMETRIC, cmsFLAGS_NOOPTIMIZE);
58 for (r=0; r< 256; r++) {
60 for (g=0; g < 256; g++) {
61 for (b=0; b < 256; b++) {
67 cmsDoTransform(xform, RGB, RGB_OUT, 1);
69 err = VecDist(RGB, RGB_OUT);
81 printf("Average %g\n", SumX / n);
82 printf("Max %g\n", Peak);
83 printf("Std %g\n", sqrt((n*SumX2 - SumX * SumX) / (n*(n-1))));
84 cmsCloseProfile(hProfile);
85 cmsDeleteTransform(xform);