mirror of
https://github.com/opencv/opencv.git
synced 2025-01-12 15:49:32 +08:00
111 lines
4.5 KiB
C++
111 lines
4.5 KiB
C++
/*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:
|
|
//
|
|
// * Redistribution's of source code must retain the above copyright notice,
|
|
// this list of conditions and the following disclaimer.
|
|
//
|
|
// * Redistribution's in binary form must reproduce the above copyright notice,
|
|
// this list of conditions and the following disclaimer in the documentation
|
|
// and/or other materials provided with the distribution.
|
|
//
|
|
// * The name of the copyright holders may not be used to endorse or promote products
|
|
// derived from this software without specific prior written permission.
|
|
//
|
|
// This software is provided by the copyright holders and contributors "as is" and
|
|
// any express or implied warranties, including, but not limited to, the implied
|
|
// warranties of merchantability and fitness for a particular purpose are disclaimed.
|
|
// In no event shall the Intel Corporation or contributors be liable for any direct,
|
|
// indirect, incidental, special, exemplary, or consequential damages
|
|
// (including, but not limited to, procurement of substitute goods or services;
|
|
// loss of use, data, or profits; or business interruption) however caused
|
|
// and on any theory of liability, whether in contract, strict liability,
|
|
// or tort (including negligence or otherwise) arising in any way out of
|
|
// the use of this software, even if advised of the possibility of such damage.
|
|
//
|
|
//M*/
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// NVIDIA CUDA implementation of Brox et al Optical Flow algorithm
|
|
//
|
|
// Algorithm is explained in the original paper:
|
|
// T. Brox, A. Bruhn, N. Papenberg, J. Weickert:
|
|
// High accuracy optical flow estimation based on a theory for warping.
|
|
// ECCV 2004.
|
|
//
|
|
// Implementation by Mikhail Smirnov
|
|
// email: msmirnov@nvidia.com, devsupport@nvidia.com
|
|
//
|
|
// Credits for help with the code to:
|
|
// Alexey Mendelenko, Anton Obukhov, and Alexander Kharlamov.
|
|
//
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
#ifndef _ncv_optical_flow_h_
|
|
#define _ncv_optical_flow_h_
|
|
|
|
#include "opencv2/cudalegacy/NCV.hpp"
|
|
|
|
//! @addtogroup cudalegacy
|
|
//! @{
|
|
|
|
/// \brief Model and solver parameters
|
|
struct NCVBroxOpticalFlowDescriptor
|
|
{
|
|
/// flow smoothness
|
|
Ncv32f alpha;
|
|
/// gradient constancy importance
|
|
Ncv32f gamma;
|
|
/// pyramid scale factor
|
|
Ncv32f scale_factor;
|
|
/// number of lagged non-linearity iterations (inner loop)
|
|
Ncv32u number_of_inner_iterations;
|
|
/// number of warping iterations (number of pyramid levels)
|
|
Ncv32u number_of_outer_iterations;
|
|
/// number of linear system solver iterations
|
|
Ncv32u number_of_solver_iterations;
|
|
};
|
|
|
|
/////////////////////////////////////////////////////////////////////////////////////////
|
|
/// \brief Compute optical flow
|
|
///
|
|
/// Based on method by Brox et al [2004]
|
|
/// \param [in] desc model and solver parameters
|
|
/// \param [in] gpu_mem_allocator GPU memory allocator
|
|
/// \param [in] frame0 source frame
|
|
/// \param [in] frame1 frame to track
|
|
/// \param [out] u flow horizontal component (along \b x axis)
|
|
/// \param [out] v flow vertical component (along \b y axis)
|
|
/// \param stream
|
|
/// \return computation status
|
|
/////////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
CV_EXPORTS
|
|
NCVStatus NCVBroxOpticalFlow(const NCVBroxOpticalFlowDescriptor desc,
|
|
INCVMemAllocator &gpu_mem_allocator,
|
|
const NCVMatrix<Ncv32f> &frame0,
|
|
const NCVMatrix<Ncv32f> &frame1,
|
|
NCVMatrix<Ncv32f> &u,
|
|
NCVMatrix<Ncv32f> &v,
|
|
cudaStream_t stream);
|
|
|
|
//! @}
|
|
|
|
#endif
|