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minor refactoring in gpu module

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This commit is contained in:
Alexey Spizhevoy 2010-12-24 12:55:43 +00:00
parent 21b081deff
commit eaf35a8421
1 changed files with 8 additions and 20 deletions
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28
modules/gpu/src/imgproc_gpu.cpp
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@ -1255,7 +1255,6 @@ namespace
void cv::gpu::convolve(const GpuMat& image, const GpuMat& templ, GpuMat& result, bool ccorr)
{
// We must be sure we use correct OpenCV analogues for CUFFT types
StaticAssert<sizeof(float) == sizeof(cufftReal)>::check();
StaticAssert<sizeof(float) * 2 == sizeof(cufftComplex)>::check();
@ -1278,9 +1277,9 @@ void cv::gpu::convolve(const GpuMat& image, const GpuMat& templ, GpuMat& result,
GpuMat result_data = createContinuous(dft_size, CV_32F);
int spect_len = dft_size.height * (dft_size.width / 2 + 1);
GpuMat image_spect = createContinuous(1, spect_len, CV_32FC2);
GpuMat templ_spect = createContinuous(1, spect_len, CV_32FC2);
GpuMat result_spect = createContinuous(1, spect_len, CV_32FC2);
GpuMat image_spect(1, spect_len, CV_32FC2);
GpuMat templ_spect(1, spect_len, CV_32FC2);
GpuMat result_spect(1, spect_len, CV_32FC2);
cufftHandle planR2C, planC2R;
cufftSafeCall(cufftPlan2d(&planC2R, dft_size.height, dft_size.width, CUFFT_C2R));
@ -1300,35 +1299,24 @@ void cv::gpu::convolve(const GpuMat& image, const GpuMat& templ, GpuMat& result,
for (int y = 0; y < result.rows; y += block_size.height)
{
for (int x = 0; x < result.cols; x += block_size.width)
{
Size image_roi_size;
image_roi_size.width = std::min(x + dft_size.width, image.cols) - x;
image_roi_size.height = std::min(y + dft_size.height, image.rows) - y;
// Locate ROI in the source matrix
{
Size image_roi_size(std::min(x + dft_size.width, image.cols) - x,
std::min(y + dft_size.height, image.rows) - y);
GpuMat image_roi(image_roi_size, CV_32F, (void*)(image.ptr<float>(y) + x), image.step);
// Make source image block is continuous
copyMakeBorder(image_roi, image_block, 0, image_block.rows - image_roi.rows, 0,
image_block.cols - image_roi.cols, 0);
cufftSafeCall(cufftExecR2C(planR2C, image_block.ptr<cufftReal>(),
image_spect.ptr<cufftComplex>()));
mulAndScaleSpectrums(image_spect, templ_spect, result_spect, 0,
1.f / dft_size.area(), ccorr);
cufftSafeCall(cufftExecC2R(planC2R, result_spect.ptr<cufftComplex>(),
result_data.ptr<cufftReal>()));
Size result_roi_size;
result_roi_size.width = std::min(x + block_size.width, result.cols) - x;
result_roi_size.height = std::min(y + block_size.height, result.rows) - y;
Size result_roi_size(std::min(x + block_size.width, result.cols) - x,
std::min(y + block_size.height, result.rows) - y);
GpuMat result_roi(result_roi_size, result.type(), (void*)(result.ptr<float>(y) + x), result.step);
GpuMat result_block(result_roi_size, result_data.type(), result_data.ptr(), result_data.step);
// Copy block into appropriate part of the result matrix
result_block.copyTo(result_roi);
}
}