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Avoiding unnecessary copy by creating borders in place after RGB -> RGBA conversion

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This commit is contained in:
Erik Karlsson 2015-03-02 15:48:00 +01:00
parent 73663dcdd1
commit 50bb14a0a8
1 changed files with 5 additions and 3 deletions
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8
modules/photo/src/fast_nlmeans_denoising_opencl.hpp
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@ -129,10 +129,12 @@ static bool ocl_fastNlMeansDenoising(InputArray _src, OutputArray _dst, float h,
UMat srcex;
int borderSize = searchWindowHalfSize + templateWindowHalfWize;
if (cn == 3) {
UMat tmp(size, CV_MAKE_TYPE(depth, 4));
srcex.create(size.height + 2*borderSize, size.width + 2*borderSize, CV_MAKE_TYPE(depth, 4));
UMat src(srcex, Rect(borderSize, borderSize, size.width, size.height));
int from_to[] = { 0,0, 1,1, 2,2 };
mixChannels(std::vector<UMat>(1, _src.getUMat()), std::vector<UMat>(1, tmp), from_to, 3);
copyMakeBorder(tmp, srcex, borderSize, borderSize, borderSize, borderSize, BORDER_DEFAULT);
mixChannels(std::vector<UMat>(1, _src.getUMat()), std::vector<UMat>(1, src), from_to, 3);
copyMakeBorder(src, srcex, borderSize, borderSize, borderSize, borderSize,
BORDER_DEFAULT|BORDER_ISOLATED); // create borders in place
}
else
copyMakeBorder(_src, srcex, borderSize, borderSize, borderSize, borderSize, BORDER_DEFAULT);