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fix gpu HOG implementation:

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move hog::set_up_constants from constructor to compute method

if user changed CUDA device between constructor and computation,
some variables were uninitialized
(cherry picked from commit 21bbed7baf)
This commit is contained in:
Vladislav Vinogradov 2015-02-27 14:28:12 +03:00 committed by Alexander Smorkalov
parent b320138dba
commit 4539607ab1
1 changed files with 3 additions and 3 deletions
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6
modules/gpu/src/hog.cpp
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@ -127,9 +127,6 @@ cv::gpu::HOGDescriptor::HOGDescriptor(Size win_size_, Size block_size_, Size blo
Size cells_per_block = Size(block_size.width / cell_size.width, block_size.height / cell_size.height);
CV_Assert(cells_per_block == Size(2, 2));
cv::Size blocks_per_win = numPartsWithin(win_size, block_size, block_stride);
hog::set_up_constants(nbins, block_stride.width, block_stride.height, blocks_per_win.width, blocks_per_win.height);
}
size_t cv::gpu::HOGDescriptor::getDescriptorSize() const
@ -221,6 +218,9 @@ void cv::gpu::HOGDescriptor::computeGradient(const GpuMat& img, GpuMat& _grad, G
void cv::gpu::HOGDescriptor::computeBlockHistograms(const GpuMat& img)
{
cv::Size blocks_per_win = numPartsWithin(win_size, block_size, block_stride);
hog::set_up_constants(nbins, block_stride.width, block_stride.height, blocks_per_win.width, blocks_per_win.height);
computeGradient(img, grad, qangle);
size_t block_hist_size = getBlockHistogramSize();