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resize area for big downscaling integration

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This commit is contained in:
Marina Kolpakova
2012-06-09 15:24:01 +00:00
parent f2d3b9b4a1
commit f2c30cd90d
5 changed files with 183 additions and 3 deletions
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48
modules/gpu/src/cuda/resize.cu
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@@ -116,7 +116,6 @@ namespace cv { namespace gpu { namespace device
{
dim3 block(32, 8);
dim3 grid(divUp(dst.cols, block.x), divUp(dst.rows, block.y));
BrdConstant<T> brd(src.rows, src.cols);
BorderReader< PtrStep<T>, BrdConstant<T> > brdSrc(src, brd);
IntegerAreaFilter< BorderReader< PtrStep<T>, BrdConstant<T> > > filteredSrc(brdSrc, fx, fy);
@@ -278,5 +277,52 @@ namespace cv { namespace gpu { namespace device
//template void resize_gpu<float2>(DevMem2Db src, DevMem2Db srcWhole, int xoff, int yoff, float fx, float fy, DevMem2Db dst, int interpolation, cudaStream_t stream);
template void resize_gpu<float3>(DevMem2Db src, DevMem2Db srcWhole, int xoff, int yoff, float fx, float fy, DevMem2Db dst, int interpolation, cudaStream_t stream);
template void resize_gpu<float4>(DevMem2Db src, DevMem2Db srcWhole, int xoff, int yoff, float fx, float fy, DevMem2Db dst, int interpolation, cudaStream_t stream);
template<typename T> struct scan_traits{};
template<> struct scan_traits<uchar>
{
typedef int scan_line_type;
};
template <typename Ptr2D, typename T>
__global__ void resize_area_scan(const Ptr2D src, int fx, int fy, DevMem2D_<T> dst, DevMem2D_<T> buffer)
{
typedef typename scan_traits<T>::scan_line_type W;
extern __shared__ W line[];
const int x = blockDim.x * blockIdx.x + threadIdx.x;
const int y = blockDim.y * blockIdx.y + threadIdx.y;
}
template <typename T> struct InterAreaDispatcherStream
{
static void call(DevMem2D_<T> src, int fx, int fy, DevMem2D_<T> dst, DevMem2D_<T> buffer, cudaStream_t stream)
{
dim3 block(256, 1);
dim3 grid(divUp(dst.cols, block.x), 1);
resize_area_scan<<<grid, block, 256 * 2 * sizeof(typename scan_traits<T>::scan_line_type) >>>(src, fx, fy, dst, buffer);
cudaSafeCall( cudaGetLastError() );
if (stream == 0)
cudaSafeCall( cudaDeviceSynchronize() );
}
};
template <typename T>
void resize_area_gpu(DevMem2Db src, DevMem2Db dst,float fx, float fy,
int interpolation, DevMem2Db buffer, cudaStream_t stream)
{
(void)interpolation;
int iscale_x = round(fx);
int iscale_y = round(fy);
InterAreaDispatcherStream<T>::call(src, iscale_x, iscale_y, dst, buffer, stream);
}
template void resize_area_gpu<uchar>(DevMem2Db src, DevMem2Db dst, float fx, float fy, int interpolation, DevMem2Db buffer, cudaStream_t stream);
} // namespace imgproc
}}} // namespace cv { namespace gpu { namespace device