101 lines
3.9 KiB
C++
101 lines
3.9 KiB
C++
/*M///////////////////////////////////////////////////////////////////////////////////////
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//
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// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
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//
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// By downloading, copying, installing or using the software you agree to this license.
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// If you do not agree to this license, do not download, install,
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// copy or use the software.
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//
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//
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// License Agreement
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// For Open Source Computer Vision Library
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//
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// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
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// Copyright (C) 2009, Willow Garage Inc., all rights reserved.
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// Third party copyrights are property of their respective owners.
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//
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// Redistribution and use in source and binary forms, with or without modification,
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// are permitted provided that the following conditions are met:
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//
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// * Redistribution's of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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//
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// * Redistribution's in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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//
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// * The name of the copyright holders may not be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// This software is provided by the copyright holders and contributors "as is" and
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// any express or implied warranties, including, but not limited to, the implied
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// warranties of merchantability and fitness for a particular purpose are disclaimed.
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// In no event shall the Intel Corporation or contributors be liable for any direct,
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// indirect, incidental, special, exemplary, or consequential damages
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// (including, but not limited to, procurement of substitute goods or services;
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// loss of use, data, or profits; or business interruption) however caused
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// and on any theory of liability, whether in contract, strict liability,
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// or tort (including negligence or otherwise) arising in any way out of
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// the use of this software, even if advised of the possibility of such damage.
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//
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//M*/
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#include "precomp.hpp"
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using namespace cv;
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using namespace cv::cuda;
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#if !defined (HAVE_CUDA) || !defined(HAVE_OPENCV_CUDAIMGPROC) || defined (CUDA_DISABLER)
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void cv::cuda::createOpticalFlowNeedleMap(const GpuMat&, const GpuMat&, GpuMat&, GpuMat&) { throw_no_cuda(); }
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#else
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namespace cv { namespace cuda { namespace device
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{
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namespace optical_flow
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{
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void NeedleMapAverage_gpu(PtrStepSzf u, PtrStepSzf v, PtrStepSzf u_avg, PtrStepSzf v_avg);
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void CreateOpticalFlowNeedleMap_gpu(PtrStepSzf u_avg, PtrStepSzf v_avg, float* vertex_buffer, float* color_data, float max_flow, float xscale, float yscale);
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}
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}}}
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void cv::cuda::createOpticalFlowNeedleMap(const GpuMat& u, const GpuMat& v, GpuMat& vertex, GpuMat& colors)
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{
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using namespace cv::cuda::device::optical_flow;
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CV_Assert(u.type() == CV_32FC1);
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CV_Assert(v.type() == u.type() && v.size() == u.size());
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const int NEEDLE_MAP_SCALE = 16;
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const int x_needles = u.cols / NEEDLE_MAP_SCALE;
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const int y_needles = u.rows / NEEDLE_MAP_SCALE;
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GpuMat u_avg(y_needles, x_needles, CV_32FC1);
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GpuMat v_avg(y_needles, x_needles, CV_32FC1);
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NeedleMapAverage_gpu(u, v, u_avg, v_avg);
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const int NUM_VERTS_PER_ARROW = 6;
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const int num_arrows = x_needles * y_needles * NUM_VERTS_PER_ARROW;
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vertex.create(1, num_arrows, CV_32FC3);
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colors.create(1, num_arrows, CV_32FC3);
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colors.setTo(Scalar::all(1.0));
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double uMax, vMax;
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cuda::minMax(u_avg, 0, &uMax);
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cuda::minMax(v_avg, 0, &vMax);
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float max_flow = static_cast<float>(std::sqrt(uMax * uMax + vMax * vMax));
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CreateOpticalFlowNeedleMap_gpu(u_avg, v_avg, vertex.ptr<float>(), colors.ptr<float>(), max_flow, 1.0f / u.cols, 1.0f / u.rows);
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cuda::cvtColor(colors, colors, COLOR_HSV2RGB);
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}
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#endif /* HAVE_CUDA */
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