Click here to Skip to main content
15,886,689 members
Articles / Programming Languages / C++

Capturing Video from Web-camera on Windows 7 and 8 by using Media Foundation

Rate me:
Please Sign up or sign in to vote.
4.96/5 (25 votes)
10 Apr 2013CPOL5 min read 280.4K   33.1K   71  
Simple lib for capturing video from web-camera by using Media Foundation
/*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) 2009-2011, 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*/

#ifndef __OPENCV_VIDEOSTAB_INPAINTINT_HPP__
#define __OPENCV_VIDEOSTAB_INPAINTINT_HPP__

#include <vector>
#include "opencv2/core/core.hpp"
#include "opencv2/videostab/optical_flow.hpp"
#include "opencv2/videostab/fast_marching.hpp"
#include "opencv2/photo/photo.hpp"

namespace cv
{
namespace videostab
{

class CV_EXPORTS InpainterBase
{
public:
    InpainterBase()
        : radius_(0), frames_(0), motions_(0),
          stabilizedFrames_(0), stabilizationMotions_(0) {}

    virtual ~InpainterBase() {}

    virtual void setRadius(int val) { radius_ = val; }
    virtual int radius() const { return radius_; }

    virtual void setFrames(const std::vector<Mat> &val) { frames_ = &val; }
    virtual const std::vector<Mat>& frames() const { return *frames_; }

    virtual void setMotions(const std::vector<Mat> &val) { motions_ = &val; }
    virtual const std::vector<Mat>& motions() const { return *motions_; }

    virtual void setStabilizedFrames(const std::vector<Mat> &val) { stabilizedFrames_ = &val; }
    virtual const std::vector<Mat>& stabilizedFrames() const { return *stabilizedFrames_; }

    virtual void setStabilizationMotions(const std::vector<Mat> &val) { stabilizationMotions_ = &val; }
    virtual const std::vector<Mat>& stabilizationMotions() const { return *stabilizationMotions_; }

    virtual void update() {}

    virtual void inpaint(int idx, Mat &frame, Mat &mask) = 0;

protected:
    int radius_;
    const std::vector<Mat> *frames_;
    const std::vector<Mat> *motions_;
    const std::vector<Mat> *stabilizedFrames_;
    const std::vector<Mat> *stabilizationMotions_;
};

class CV_EXPORTS NullInpainter : public InpainterBase
{
public:
    virtual void inpaint(int /*idx*/, Mat &/*frame*/, Mat &/*mask*/) {}
};

class CV_EXPORTS InpaintingPipeline : public InpainterBase
{
public:
    void pushBack(Ptr<InpainterBase> inpainter) { inpainters_.push_back(inpainter); }
    bool empty() const { return inpainters_.empty(); }

    virtual void setRadius(int val);
    virtual void setFrames(const std::vector<Mat> &val);
    virtual void setMotions(const std::vector<Mat> &val);
    virtual void setStabilizedFrames(const std::vector<Mat> &val);
    virtual void setStabilizationMotions(const std::vector<Mat> &val);

    virtual void update();

    virtual void inpaint(int idx, Mat &frame, Mat &mask);

private:
    std::vector<Ptr<InpainterBase> > inpainters_;
};

class CV_EXPORTS ConsistentMosaicInpainter : public InpainterBase
{
public:
    ConsistentMosaicInpainter();

    void setStdevThresh(float val) { stdevThresh_ = val; }
    float stdevThresh() const { return stdevThresh_; }

    virtual void inpaint(int idx, Mat &frame, Mat &mask);

private:
    float stdevThresh_;
};

class CV_EXPORTS MotionInpainter : public InpainterBase
{
public:
    MotionInpainter();

    void setOptFlowEstimator(Ptr<IDenseOptFlowEstimator> val) { optFlowEstimator_ = val; }
    Ptr<IDenseOptFlowEstimator> optFlowEstimator() const { return optFlowEstimator_; }

    void setFlowErrorThreshold(float val) { flowErrorThreshold_ = val; }
    float flowErrorThreshold() const { return flowErrorThreshold_; }

    void setDistThreshold(float val) { distThresh_ = val; }
    float distThresh() const { return distThresh_; }

    void setBorderMode(int val) { borderMode_ = val; }
    int borderMode() const { return borderMode_; }

    virtual void inpaint(int idx, Mat &frame, Mat &mask);

private:
    FastMarchingMethod fmm_;
    Ptr<IDenseOptFlowEstimator> optFlowEstimator_;
    float flowErrorThreshold_;
    float distThresh_;
    int borderMode_;

    Mat frame1_, transformedFrame1_;
    Mat_<uchar> grayFrame_, transformedGrayFrame1_;
    Mat_<uchar> mask1_, transformedMask1_;
    Mat_<float> flowX_, flowY_, flowErrors_;
    Mat_<uchar> flowMask_;
};

class CV_EXPORTS ColorAverageInpainter : public InpainterBase
{
public:
    virtual void inpaint(int idx, Mat &frame, Mat &mask);

private:
    FastMarchingMethod fmm_;
};

class CV_EXPORTS ColorInpainter : public InpainterBase
{
public:
    ColorInpainter(int method = INPAINT_TELEA, double _radius = 2.)
        : method_(method), radius_(_radius) {}

    virtual void inpaint(int idx, Mat &frame, Mat &mask);

private:
    int method_;
    double radius_;
    Mat invMask_;
};

CV_EXPORTS void calcFlowMask(
        const Mat &flowX, const Mat &flowY, const Mat &errors, float maxError,
        const Mat &mask0, const Mat &mask1, Mat &flowMask);

CV_EXPORTS void completeFrameAccordingToFlow(
        const Mat &flowMask, const Mat &flowX, const Mat &flowY, const Mat &frame1, const Mat &mask1,
        float distThresh, Mat& frame0, Mat &mask0);

} // namespace videostab
} // namespace cv

#endif

By viewing downloads associated with this article you agree to the Terms of Service and the article's licence.

If a file you wish to view isn't highlighted, and is a text file (not binary), please let us know and we'll add colourisation support for it.

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


Written By
Software Developer
Australia Australia
This member has not yet provided a Biography. Assume it's interesting and varied, and probably something to do with programming.

Comments and Discussions