119 lines
3.5 KiB
C++
119 lines
3.5 KiB
C++
/*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) 2013, OpenCV Foundation, 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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#ifndef __OPENCV_ONLINEMIL_HPP__
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#define __OPENCV_ONLINEMIL_HPP__
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#include "opencv2/core.hpp"
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#include <limits>
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namespace cv
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{
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//! @addtogroup tracking
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//! @{
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//TODO based on the original implementation
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//http://vision.ucsd.edu/~bbabenko/project_miltrack.shtml
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class ClfOnlineStump;
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class CV_EXPORTS ClfMilBoost
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{
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public:
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struct CV_EXPORTS Params
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{
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Params();
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int _numSel;
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int _numFeat;
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float _lRate;
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};
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ClfMilBoost();
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~ClfMilBoost();
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void init( const ClfMilBoost::Params ¶meters = ClfMilBoost::Params() );
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void update( const Mat& posx, const Mat& negx );
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std::vector<float> classify( const Mat& x, bool logR = true );
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inline float sigmoid( float x )
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{
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return 1.0f / ( 1.0f + exp( -x ) );
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}
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private:
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uint _numsamples;
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ClfMilBoost::Params _myParams;
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std::vector<int> _selectors;
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std::vector<ClfOnlineStump*> _weakclf;
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uint _counter;
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};
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class ClfOnlineStump
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{
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public:
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float _mu0, _mu1, _sig0, _sig1;
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float _q;
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int _s;
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float _log_n1, _log_n0;
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float _e1, _e0;
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float _lRate;
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ClfOnlineStump();
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ClfOnlineStump( int ind );
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void init();
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void update( const Mat& posx, const Mat& negx, const cv::Mat_<float> & posw = cv::Mat_<float>(), const cv::Mat_<float> & negw = cv::Mat_<float>() );
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bool classify( const Mat& x, int i );
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float classifyF( const Mat& x, int i );
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std::vector<float> classifySetF( const Mat& x );
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private:
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bool _trained;
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int _ind;
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};
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//! @}
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} /* namespace cv */
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#endif
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