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Extend cudaimgproc::demosaicing for f32 #3836

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Extend cudaimgproc::demosaicing for f32 #3836

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7 changes: 6 additions & 1 deletion modules/cudaimgproc/src/color.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -72,6 +72,8 @@ namespace cv { namespace cuda {

template <int cn, typename Depth>
void MHCdemosaic(PtrStepSz<Depth> src, int2 sourceOffset, PtrStepSz<Depth> dst, int2 firstRed, cudaStream_t stream);

void MHCdemosaic_float3(PtrStepSzf src, int2 sourceOffset, PtrStepSzf dst, int2 firstRed, cudaStream_t stream);
}
}}

Expand Down Expand Up @@ -2136,7 +2138,7 @@ void cv::cuda::demosaicing(InputArray _src, OutputArray _dst, int code, int dcn,
GpuMat src = _src.getGpuMat();
const int depth = _src.depth();

CV_Assert( depth == CV_8U || depth == CV_16U);
CV_Assert( depth == CV_8U || depth == CV_16U || (depth == CV_32F && dcn == 3) );
CV_Assert( src.channels() == 1 );
CV_Assert( dcn == 3 || dcn == 4 );

Expand All @@ -2156,6 +2158,9 @@ void cv::cuda::demosaicing(InputArray _src, OutputArray _dst, int code, int dcn,
if (depth == CV_8U) {
PtrStepSzb srcWhole(wholeSize.height, wholeSize.width, src.datastart, src.step);
cv::cuda::device::MHCdemosaic<3, uchar>(srcWhole, make_int2(ofs.x, ofs.y), dst, firstRed, StreamAccessor::getStream(stream));
} else if (depth === CV_32F) {
PtrStepSzf srcWhole(wholeSize.height, wholeSize.width, (float*)src.datastart, src.step);
cv::cuda::device::MHCdemosaic_float3(srcWhole, make_int2(ofs.x, ofs.y), dst, firstRed, StreamAccessor::getStream(stream));
} else {
PtrStepSz<ushort> srcWhole(wholeSize.height, wholeSize.width, src.ptr<ushort>(), src.step);
cv::cuda::device::MHCdemosaic<3, ushort>(srcWhole, make_int2(ofs.x, ofs.y), dst, firstRed, StreamAccessor::getStream(stream));
Expand Down
48 changes: 38 additions & 10 deletions modules/cudaimgproc/src/cuda/debayer.cu
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Expand Up @@ -382,6 +382,15 @@ namespace cv { namespace cuda { namespace device
template void Bayer2BGR_16u_gpu<3>(PtrStepSzb src, PtrStepSzb dst, bool blue_last, bool start_with_green, cudaStream_t stream);
template void Bayer2BGR_16u_gpu<4>(PtrStepSzb src, PtrStepSzb dst, bool blue_last, bool start_with_green, cudaStream_t stream);

template <typename DstType> __device__ __forceinline__ DstType toDstColor(const float3& pix){
typedef typename VecTraits<DstType>::elem_type SrcElemType;
return toDst<D>(make_3<SrcElemType>(saturate_cast<SrcElemType>(pix.x), saturate_cast<SrcElemType>(pix.y), saturate_cast<SrcElemType>(pix.z)));
}
template <> __device__ __forceinline__ float3 toDstColor<float3>(const float3& pix)
{
return pix;
}

//////////////////////////////////////////////////////////////
// Bayer Demosaicing (Malvar, He, and Cutler)
//
Expand Down Expand Up @@ -517,19 +526,15 @@ namespace cv { namespace cuda { namespace device
alternate.x = (x + firstRed.x) % 2;
alternate.y = (y + firstRed.y) % 2;

typedef typename VecTraits<DstType>::elem_type SrcElemType;
typedef typename TypeVec<SrcElemType, 3>::vec_type SrcType;

SrcType pixelColor =
float3 pixelColor =
(alternate.y == 0) ?
((alternate.x == 0) ?
make_3<SrcElemType>(saturate_cast<SrcElemType>(PATTERN.y), saturate_cast<SrcElemType>(PATTERN.x), saturate_cast<SrcElemType>(C)) :
make_3<SrcElemType>(saturate_cast<SrcElemType>(PATTERN.w), saturate_cast<SrcElemType>(C), saturate_cast<SrcElemType>(PATTERN.z))) :
make_float3(PATTERN.y, PATTERN.x, C) :
make_float3(PATTERN.w, C, PATTERN.z)) :
((alternate.x == 0) ?
make_3<SrcElemType>(saturate_cast<SrcElemType>(PATTERN.z), saturate_cast<SrcElemType>(C), saturate_cast<SrcElemType>(PATTERN.w)) :
make_3<SrcElemType>(saturate_cast<SrcElemType>(C), saturate_cast<SrcElemType>(PATTERN.x), saturate_cast<SrcElemType>(PATTERN.y)));

dst(y, x) = toDst<DstType>(pixelColor);
make_float3(PATTERN.z, C, PATTERN.w) :
make_float3(C, PATTERN.x, PATTERN.y));
dst(y, x) = toDstColor<DstType>(pixelColor);
}

template <int cn, typename Depth>
Expand Down Expand Up @@ -561,6 +566,29 @@ namespace cv { namespace cuda { namespace device
template void MHCdemosaic<1, ushort>(PtrStepSz<ushort> src, int2 sourceOffset, PtrStepSz<ushort> dst, int2 firstRed, cudaStream_t stream);
template void MHCdemosaic<3, ushort>(PtrStepSz<ushort> src, int2 sourceOffset, PtrStepSz<ushort> dst, int2 firstRed, cudaStream_t stream);
template void MHCdemosaic<4, ushort>(PtrStepSz<ushort> src, int2 sourceOffset, PtrStepSz<ushort> dst, int2 firstRed, cudaStream_t stream);

// Implement MHCdemosaic for float and with a result of 3 channels
void MHCdemosaic_float3(PtrStepSzf src, int2 sourceOffset, PtrStepSzf dst, int2 firstRed, cudaStream_t stream)
{
typedef typename TypeVec<float, 3>::vec_type dst_t;

const dim3 block(32, 8);
const dim3 grid(divUp(src.cols, block.x), divUp(src.rows, block.y));

if (sourceOffset.x || sourceOffset.y) {
cv::cudev::TextureOff<float> texSrc(src, sourceOffset.y, sourceOffset.x);
MHCdemosaic<dst_t, cv::cudev::TextureOffPtr<float>><<<grid, block, 0, stream>>>((PtrStepSz<dst_t>)dst, texSrc, firstRed);
}
else {
cv::cudev::Texture<float> texSrc(src);
MHCdemosaic<dst_t, cv::cudev::TexturePtr<float>><<<grid, block, 0, stream>>>((PtrStepSz<dst_t>)dst, texSrc, firstRed);
}

cudaSafeCall( cudaGetLastError() );

if (stream == 0)
cudaSafeCall( cudaDeviceSynchronize() );
}
}}}

#endif /* CUDA_DISABLER */