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dlib
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Made input_rgb_image_pyramid use multiple cores while building the pyramid.

This commit is contained in:
Davis King 2016-09-10 15:29:06 -04:00
parent 6168781ab9
commit 86fa427e26
1 changed files with 12 additions and 11 deletions
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23
dlib/dnn/input.h
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@ -567,15 +567,21 @@ namespace dlib
}
matrix<rgb_pixel> img;
create_tiled_pyramid<pyramid_type>(*ibegin, img, data.annotation().get<std::vector<rectangle>>());
nr = img.nr();
nc = img.nc();
data.set_size(std::distance(ibegin,iend), 3, nr, nc);
std::vector<matrix<rgb_pixel>> imgs(std::distance(ibegin,iend));
parallel_for(0, imgs.size(), [&](long i){
std::vector<rectangle> rects;
if (i == 0)
create_tiled_pyramid<pyramid_type>(ibegin[i], imgs[i], data.annotation().get<std::vector<rectangle>>());
else
create_tiled_pyramid<pyramid_type>(ibegin[i], imgs[i], rects);
});
nr = imgs[0].nr();
nc = imgs[0].nc();
data.set_size(imgs.size(), 3, nr, nc);
const size_t offset = nr*nc;
auto ptr = data.host();
while(true)
for (auto&& img : imgs)
{
for (long r = 0; r < nr; ++r)
{
@ -592,11 +598,6 @@ namespace dlib
}
}
ptr += offset*(data.k()-1);
++ibegin;
if (ibegin == iend)
break;
create_tiled_pyramid<pyramid_type>(*ibegin, img, data.annotation().get<std::vector<rectangle>>());
}
}