Fixed GPU version of multi-band blending in stitching module
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afc894db9f
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modules
gpu/src
stitching
@ -654,27 +654,18 @@ namespace cv { namespace gpu { namespace device
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//////////////////////////////////////////////////////////////////////////
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// multiply
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struct add_16sc4 : binary_function<short4, short4, short4>
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template <> struct TransformFunctorTraits< plus<short> > : DefaultTransformFunctorTraits< plus<short> >
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{
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__device__ __forceinline__ short4 operator ()(short4 a, short4 b) const
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{
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return make_short4(a.x + b.x, a.y + b.y, a.z + b.z, a.w + b.w);
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}
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};
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template <> struct TransformFunctorTraits<add_16sc4> : DefaultTransformFunctorTraits<add_16sc4>
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{
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enum { smart_block_dim_x = 8 };
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enum { smart_block_dim_y = 8 };
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enum { smart_shift = 8 };
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enum { smart_shift = 4 };
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};
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void add_gpu(const DevMem2D_<short4>& src1, const DevMem2D_<short4>& src2, const DevMem2D_<short4>& dst, cudaStream_t stream)
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template <typename T> void add_gpu(const DevMem2D src1, const DevMem2D src2, DevMem2D dst, cudaStream_t stream)
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{
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transform(static_cast< DevMem2D_<short4> >(src1), static_cast< DevMem2D_<short4> >(src2),
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static_cast< DevMem2D_<short4> >(dst), add_16sc4(), stream);
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transform((DevMem2D_<T>)src1, (DevMem2D_<T>)src2, (DevMem2D_<T>)dst, plus<T>(), stream);
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}
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template void add_gpu<short>(const DevMem2D src1, const DevMem2D src2, DevMem2D dst, cudaStream_t stream);
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//////////////////////////////////////////////////////////////////////////
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// multiply
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@ -177,16 +177,17 @@ namespace
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namespace cv { namespace gpu { namespace device
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{
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void add_gpu(const DevMem2D_<short4>& src1, const DevMem2D_<short4>& src2, const DevMem2D_<short4>& dst, cudaStream_t stream);
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template <typename T>
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void add_gpu(const DevMem2D src1, const DevMem2D src2, DevMem2D dst, cudaStream_t stream);
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}}}
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void cv::gpu::add(const GpuMat& src1, const GpuMat& src2, GpuMat& dst, Stream& stream)
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{
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if (src1.type() == CV_16SC4 && src2.type() == CV_16SC4)
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if (src1.depth() == CV_16S && src2.depth() == CV_16S)
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{
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CV_Assert(src1.size() == src2.size());
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dst.create(src1.size(), src1.type());
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device::add_gpu(src1, src2, dst, StreamAccessor::getStream(stream));
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device::add_gpu<short>(src1.reshape(1), src2.reshape(1), dst.reshape(1), StreamAccessor::getStream(stream));
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}
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else
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nppArithmCaller(src1, src2, dst, nppiAdd_8u_C1RSfs, nppiAdd_8u_C4RSfs, nppiAdd_32s_C1R, nppiAdd_32f_C1R, StreamAccessor::getStream(stream));
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@ -114,11 +114,11 @@ void CV_EXPORTS normalizeUsingWeightMap(const Mat& weight, Mat& src);
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void CV_EXPORTS createWeightMap(const Mat& mask, float sharpness, Mat& weight);
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void CV_EXPORTS createLaplacePyr(const Mat &img, int num_levels, std::vector<Mat>& pyr);
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void CV_EXPORTS createLaplacePyrGpu(const Mat &img, int num_levels, std::vector<Mat>& pyr);
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// Restores source image
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void CV_EXPORTS restoreImageFromLaplacePyr(std::vector<Mat>& pyr);
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void CV_EXPORTS restoreImageFromLaplacePyrGpu(std::vector<Mat>& pyr);
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} // namespace detail
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} // namespace cv
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@ -289,7 +289,10 @@ void MultiBandBlender::blend(Mat &dst, Mat &dst_mask)
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for (int i = 0; i <= num_bands_; ++i)
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normalizeUsingWeightMap(dst_band_weights_[i], dst_pyr_laplace_[i]);
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restoreImageFromLaplacePyr(dst_pyr_laplace_);
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if (can_use_gpu_)
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restoreImageFromLaplacePyrGpu(dst_pyr_laplace_);
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else
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restoreImageFromLaplacePyr(dst_pyr_laplace_);
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dst_ = dst_pyr_laplace_[0];
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dst_ = dst_(Range(0, dst_roi_final_.height), Range(0, dst_roi_final_.width));
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@ -346,6 +349,7 @@ void createLaplacePyr(const Mat &img, int num_levels, vector<Mat> &pyr)
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}
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}
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void createLaplacePyrGpu(const Mat &img, int num_levels, vector<Mat> &pyr)
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{
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#ifndef ANDROID
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@ -368,9 +372,10 @@ void createLaplacePyrGpu(const Mat &img, int num_levels, vector<Mat> &pyr)
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#endif
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}
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void restoreImageFromLaplacePyr(vector<Mat> &pyr)
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{
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if (pyr.size() == 0)
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if (pyr.empty())
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return;
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Mat tmp;
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for (size_t i = pyr.size() - 1; i > 0; --i)
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@ -380,5 +385,27 @@ void restoreImageFromLaplacePyr(vector<Mat> &pyr)
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}
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}
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void restoreImageFromLaplacePyrGpu(vector<Mat> &pyr)
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{
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#ifndef ANDROID
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if (pyr.empty())
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return;
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vector<gpu::GpuMat> gpu_pyr(pyr.size());
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for (size_t i = 0; i < pyr.size(); ++i)
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gpu_pyr[i] = pyr[i];
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gpu::GpuMat tmp;
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for (size_t i = pyr.size() - 1; i > 0; --i)
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{
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gpu::pyrUp(gpu_pyr[i], tmp);
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gpu::add(tmp, gpu_pyr[i - 1], gpu_pyr[i - 1]);
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}
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pyr[0] = gpu_pyr[0];
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#endif
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}
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} // namespace detail
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} // namespace cv
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