Open Source Computer Vision Library
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110 lines
4.5 KiB
110 lines
4.5 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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//////////////////////////////////////////////////////////////////////////////// |
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// |
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// NVIDIA CUDA implementation of Brox et al Optical Flow algorithm |
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// |
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// Algorithm is explained in the original paper: |
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// T. Brox, A. Bruhn, N. Papenberg, J. Weickert: |
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// High accuracy optical flow estimation based on a theory for warping. |
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// ECCV 2004. |
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// |
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// Implementation by Mikhail Smirnov |
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// email: msmirnov@nvidia.com, devsupport@nvidia.com |
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// |
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// Credits for help with the code to: |
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// Alexey Mendelenko, Anton Obukhov, and Alexander Kharlamov. |
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// |
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//////////////////////////////////////////////////////////////////////////////// |
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#ifndef _ncv_optical_flow_h_ |
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#define _ncv_optical_flow_h_ |
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#include "opencv2/cudalegacy/NCV.hpp" |
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//! @addtogroup cudalegacy |
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//! @{ |
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/// \brief Model and solver parameters |
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struct NCVBroxOpticalFlowDescriptor |
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{ |
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/// flow smoothness |
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Ncv32f alpha; |
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/// gradient constancy importance |
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Ncv32f gamma; |
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/// pyramid scale factor |
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Ncv32f scale_factor; |
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/// number of lagged non-linearity iterations (inner loop) |
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Ncv32u number_of_inner_iterations; |
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/// number of warping iterations (number of pyramid levels) |
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Ncv32u number_of_outer_iterations; |
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/// number of linear system solver iterations |
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Ncv32u number_of_solver_iterations; |
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}; |
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///////////////////////////////////////////////////////////////////////////////////////// |
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/// \brief Compute optical flow |
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/// |
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/// Based on method by Brox et al [2004] |
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/// \param [in] desc model and solver parameters |
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/// \param [in] gpu_mem_allocator GPU memory allocator |
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/// \param [in] frame0 source frame |
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/// \param [in] frame1 frame to track |
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/// \param [out] u flow horizontal component (along \b x axis) |
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/// \param [out] v flow vertical component (along \b y axis) |
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/// \param stream |
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/// \return computation status |
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///////////////////////////////////////////////////////////////////////////////////////// |
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CV_EXPORTS |
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NCVStatus NCVBroxOpticalFlow(const NCVBroxOpticalFlowDescriptor desc, |
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INCVMemAllocator &gpu_mem_allocator, |
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const NCVMatrix<Ncv32f> &frame0, |
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const NCVMatrix<Ncv32f> &frame1, |
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NCVMatrix<Ncv32f> &u, |
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NCVMatrix<Ncv32f> &v, |
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cudaStream_t stream); |
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//! @} |
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#endif
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