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Open Source Computer Vision Library
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100 lines
3.9 KiB
100 lines
3.9 KiB
/*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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