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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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67
modules/gpu/src/resize.cpp
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@@ -44,7 +44,32 @@
#ifndef HAVE_CUDA
void cv::gpu::resize(const GpuMat&, GpuMat&, Size, double, double, int, Stream&) { throw_nogpu(); }
void cv::gpu::resize(const GpuMat& src, GpuMat& dst, Size dsize, double fx, double fy, int interpolation, Stream& s)
{
(void)src;
(void)dst;
(void)dsize;
(void)fx;
(void)fy;
(void)interpolation;
(void)s;
throw_nogpu();
}
void cv::gpu::resize(const GpuMat& src, GpuMat& dst, Size dsize, double fx, double fy,
int interpolation, const GpuMat& buffer, Stream& s)
{
(void)src;
(void)dst;
(void)dsize;
(void)fx;
(void)fy;
(void)interpolation;
(void)buffer;
(void)s;
throw_nogpu();
}
#else // HAVE_CUDA
@@ -55,9 +80,49 @@ namespace cv { namespace gpu { namespace device
template <typename T>
void resize_gpu(DevMem2Db src, DevMem2Db srcWhole, int xoff, int yoff, float fx, float fy,
DevMem2Db dst, int interpolation, cudaStream_t stream);
template <typename T>
void resize_area_gpu(DevMem2Db src, DevMem2Db dst,float fx, float fy,
int interpolation, DevMem2Db buffer, cudaStream_t stream);
}
}}}
void cv::gpu::resize(const GpuMat& src, GpuMat& dst, Size dsize, GpuMat& buffer, double fx, double fy,
int interpolation, Stream& s)
{
CV_Assert(src.depth() <= CV_32F && src.channels() <= 4);
CV_Assert(interpolation == INTER_AREA);
CV_Assert( (fx < 1.0) && (fy < 1.0));
CV_Assert(!(dsize == Size()) || (fx > 0 && fy > 0));
if (dsize == Size())
dsize = Size(saturate_cast<int>(src.cols * fx), saturate_cast<int>(src.rows * fy));
else
{
fx = static_cast<double>(dsize.width) / src.cols;
fy = static_cast<double>(dsize.height) / src.rows;
}
fx = static_cast<float>(1.0 / fx);
fy = static_cast<float>(1.0 / fy);
dst.create(dsize, src.type());
buffer.create(cv::Size(dsize.width, src.rows), src.type());
if (dsize == src.size())
{
if (s)
s.enqueueCopy(src, dst);
else
src.copyTo(dst);
return;
}
cudaStream_t stream = StreamAccessor::getStream(s);
cv::gpu::device::imgproc::resize_area_gpu<uchar>(src, dst, fx, fy, interpolation, buffer, stream);
}
void cv::gpu::resize(const GpuMat& src, GpuMat& dst, Size dsize, double fx, double fy, int interpolation, Stream& s)
{
CV_Assert(src.depth() <= CV_32F && src.channels() <= 4);