opencv/modules/gpu/src/graphcuts.cpp

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/*M///////////////////////////////////////////////////////////////////////////////////////
//
// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
//
// By downloading, copying, installing or using the software you agree to this license.
// If you do not agree to this license, do not download, install,
// copy or use the software.
//
//
// License Agreement
// For Open Source Computer Vision Library
//
// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
// Copyright (C) 2009, Willow Garage Inc., all rights reserved.
// Third party copyrights are property of their respective owners.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
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// * Redistribution's of source code must retain the above copyright notice,
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// * Redistribution's in binary form must reproduce the above copyright notice,
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//M*/
#include "precomp.hpp"
#if !defined (HAVE_CUDA)
void cv::gpu::graphcut(GpuMat&, GpuMat&, GpuMat&, GpuMat&, GpuMat&, GpuMat&, GpuMat&, Stream&) { throw_nogpu(); }
#else /* !defined (HAVE_CUDA) */
void cv::gpu::graphcut(GpuMat& terminals, GpuMat& leftTransp, GpuMat& rightTransp, GpuMat& top, GpuMat& bottom, GpuMat& labels, GpuMat& buf, Stream& s)
{
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Size src_size = terminals.size();
CV_Assert(terminals.type() == CV_32S);
CV_Assert(leftTransp.size() == Size(src_size.height, src_size.width));
CV_Assert(leftTransp.type() == CV_32S);
CV_Assert(rightTransp.size() == Size(src_size.height, src_size.width));
CV_Assert(rightTransp.type() == CV_32S);
CV_Assert(top.size() == src_size);
CV_Assert(top.type() == CV_32S);
CV_Assert(bottom.size() == src_size);
CV_Assert(bottom.type() == CV_32S);
labels.create(src_size, CV_8U);
NppiSize sznpp;
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sznpp.width = src_size.width;
sznpp.height = src_size.height;
int bufsz;
nppSafeCall( nppiGraphcutGetSize(sznpp, &bufsz) );
if ((size_t)bufsz > buf.cols * buf.rows * buf.elemSize())
buf.create(1, bufsz, CV_8U);
cudaStream_t stream = StreamAccessor::getStream(s);
NppStreamHandler h(stream);
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nppSafeCall( nppiGraphcut_32s8u(terminals.ptr<Npp32s>(), leftTransp.ptr<Npp32s>(), rightTransp.ptr<Npp32s>(), top.ptr<Npp32s>(), bottom.ptr<Npp32s>(),
terminals.step, leftTransp.step, sznpp, labels.ptr<Npp8u>(), labels.step, buf.ptr<Npp8u>()) );
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if (stream == 0)
cudaSafeCall( cudaDeviceSynchronize() );
}
#endif /* !defined (HAVE_CUDA) */