optical_flow.cpp 3.4 KB
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/*M///////////////////////////////////////////////////////////////////////////////////////
//
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//
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//  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) 2009-2011, Willow Garage Inc., all rights reserved.
// Third party copyrights are property of their respective owners.
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#include "precomp.hpp"
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#include "opencv2/video/video.hpp"
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#include "opencv2/videostab/optical_flow.hpp"

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using namespace std;
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namespace cv
{
namespace videostab
{

void SparsePyrLkOptFlowEstimator::run(
        InputArray frame0, InputArray frame1, InputArray points0, InputOutputArray points1,
        OutputArray status, OutputArray errors)
{
    calcOpticalFlowPyrLK(frame0, frame1, points0, points1, status, errors, winSize_, maxLevel_);
}


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#if defined(HAVE_OPENCV_GPU) && !defined(ANDROID)
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DensePyrLkOptFlowEstimatorGpu::DensePyrLkOptFlowEstimatorGpu()
{
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    CV_Assert(gpu::getCudaEnabledDeviceCount() > 0);
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}


void DensePyrLkOptFlowEstimatorGpu::run(
        InputArray frame0, InputArray frame1, InputOutputArray flowX, InputOutputArray flowY,
        OutputArray errors)
{
    frame0_.upload(frame0.getMat());
    frame1_.upload(frame1.getMat());

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    optFlowEstimator_.winSize = winSize_;
    optFlowEstimator_.maxLevel = maxLevel_;
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    if (errors.needed())
    {
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        optFlowEstimator_.dense(frame0_, frame1_, flowX_, flowY_, &errors_);
        errors_.download(errors.getMatRef());
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    }
    else
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        optFlowEstimator_.dense(frame0_, frame1_, flowX_, flowY_);
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    flowX_.download(flowX.getMatRef());
    flowY_.download(flowY.getMatRef());
}
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#endif
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} // namespace videostab
} // namespace cv