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RGB[A] <-> XYZ

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This commit is contained in:
Ilya Lavrenov
2013-11-27 19:37:27 +04:00
parent 65ee06eb2b
commit ab9b883c69
4 changed files with 132 additions and 94 deletions
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modules/imgproc/src/color.cpp
+96
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@@ -2784,6 +2784,102 @@ static bool ocl_cvtColor( InputArray _src, OutputArray _dst, int code, int dcn )
format("-D depth=%d -D scn=%d -D dcn=%d -D bidx=%d", depth, scn, dcn, bidx));
break;
}
case COLOR_BGR2XYZ: case COLOR_RGB2XYZ:
{
CV_Assert(scn == 3 || scn == 4);
bidx = code == COLOR_BGR2XYZ ? 0 : 2;
UMat c;
if (depth == CV_32F)
{
float coeffs[] =
{
0.412453f, 0.357580f, 0.180423f,
0.212671f, 0.715160f, 0.072169f,
0.019334f, 0.119193f, 0.950227f
};
if (bidx == 0)
{
std::swap(coeffs[0], coeffs[2]);
std::swap(coeffs[3], coeffs[5]);
std::swap(coeffs[6], coeffs[8]);
}
Mat(1, 9, CV_32FC1, &coeffs[0]).copyTo(c);
}
else
{
int coeffs[] =
{
1689, 1465, 739,
871, 2929, 296,
79, 488, 3892
};
if (bidx == 0)
{
std::swap(coeffs[0], coeffs[2]);
std::swap(coeffs[3], coeffs[5]);
std::swap(coeffs[6], coeffs[8]);
}
Mat(1, 9, CV_32SC1, &coeffs[0]).copyTo(c);
}
_dst.create(dstSz, CV_MAKETYPE(depth, 3));
dst = _dst.getUMat();
k.create("RGB2XYZ", ocl::imgproc::cvtcolor_oclsrc,
format("-D depth=%d -D scn=%d -D dcn=3 -D bidx=%d", depth, scn, bidx));
k.args(ocl::KernelArg::ReadOnlyNoSize(src), ocl::KernelArg::WriteOnly(dst), ocl::KernelArg::ReadOnlyNoSize(c));
return k.run(2, globalsize, 0, false);
}
case COLOR_XYZ2BGR: case COLOR_XYZ2RGB:
{
if (dcn <= 0)
dcn = 3;
CV_Assert(scn == 3 && (dcn == 3 || dcn == 4));
bidx = code == COLOR_XYZ2BGR ? 0 : 2;
UMat c;
if (depth == CV_32F)
{
float coeffs[] =
{
3.240479f, -1.53715f, -0.498535f,
-0.969256f, 1.875991f, 0.041556f,
0.055648f, -0.204043f, 1.057311f
};
if (bidx == 0)
{
std::swap(coeffs[0], coeffs[6]);
std::swap(coeffs[1], coeffs[7]);
std::swap(coeffs[2], coeffs[8]);
}
Mat(1, 9, CV_32FC1, &coeffs[0]).copyTo(c);
}
else
{
int coeffs[] =
{
13273, -6296, -2042,
-3970, 7684, 170,
228, -836, 4331
};
if (bidx == 0)
{
std::swap(coeffs[0], coeffs[6]);
std::swap(coeffs[1], coeffs[7]);
std::swap(coeffs[2], coeffs[8]);
}
Mat(1, 9, CV_32SC1, &coeffs[0]).copyTo(c);
}
_dst.create(dstSz, CV_MAKETYPE(depth, dcn));
dst = _dst.getUMat();
k.create("XYZ2RGB", ocl::imgproc::cvtcolor_oclsrc,
format("-D depth=%d -D scn=3 -D dcn=%d -D bidx=%d", depth, dcn, bidx));
k.args(ocl::KernelArg::ReadOnlyNoSize(src), ocl::KernelArg::WriteOnly(dst), ocl::KernelArg::ReadOnlyNoSize(c));
return k.run(2, globalsize, 0, false);
}
/*
case COLOR_BGR5652GRAY: case COLOR_BGR5552GRAY:
case COLOR_GRAY2BGR565: case COLOR_GRAY2BGR555: