Open Source Computer Vision
cv::BackgroundSubtractorMOG2 Class Reference

#include <background_segm.hpp>

Inheritance diagram for cv::BackgroundSubtractorMOG2:
cv::BackgroundSubtractor cv::Algorithm

Public Member Functions

 BackgroundSubtractorMOG2 ()
 the default constructor More...
 BackgroundSubtractorMOG2 (int history, float varThreshold, bool bShadowDetection=true)
 the full constructor that takes the length of the history, the number of gaussian mixtures, the background ratio parameter and the noise strength More...
virtual ~BackgroundSubtractorMOG2 ()
 the destructor More...
virtual void operator() (InputArray image, OutputArray fgmask, double learningRate=-1)
 the update operator More...
virtual void getBackgroundImage (OutputArray backgroundImage) const
 computes a background image which are the mean of all background gaussians More...
virtual void initialize (Size frameSize, int frameType)
 re-initiaization method More...
virtual AlgorithmInfoinfo () const
- Public Member Functions inherited from cv::BackgroundSubtractor
virtual ~BackgroundSubtractor ()
 the virtual destructor More...
- Public Member Functions inherited from cv::Algorithm
 Algorithm ()
virtual ~Algorithm ()
string name () const
template<typename _Tp >
ParamType< _Tp >::member_type get (const string &name) const
template<typename _Tp >
ParamType< _Tp >::member_type get (const char *name) const
int getInt (const string &name) const
double getDouble (const string &name) const
bool getBool (const string &name) const
string getString (const string &name) const
Mat getMat (const string &name) const
vector< MatgetMatVector (const string &name) const
Ptr< AlgorithmgetAlgorithm (const string &name) const
void set (const string &name, int value)
void set (const string &name, double value)
void set (const string &name, bool value)
void set (const string &name, const string &value)
void set (const string &name, const Mat &value)
void set (const string &name, const vector< Mat > &value)
void set (const string &name, const Ptr< Algorithm > &value)
template<typename _Tp >
void set (const string &name, const Ptr< _Tp > &value)
void setInt (const string &name, int value)
void setDouble (const string &name, double value)
void setBool (const string &name, bool value)
void setString (const string &name, const string &value)
void setMat (const string &name, const Mat &value)
void setMatVector (const string &name, const vector< Mat > &value)
void setAlgorithm (const string &name, const Ptr< Algorithm > &value)
template<typename _Tp >
void setAlgorithm (const string &name, const Ptr< _Tp > &value)
void set (const char *name, int value)
void set (const char *name, double value)
void set (const char *name, bool value)
void set (const char *name, const string &value)
void set (const char *name, const Mat &value)
void set (const char *name, const vector< Mat > &value)
void set (const char *name, const Ptr< Algorithm > &value)
template<typename _Tp >
void set (const char *name, const Ptr< _Tp > &value)
void setInt (const char *name, int value)
void setDouble (const char *name, double value)
void setBool (const char *name, bool value)
void setString (const char *name, const string &value)
void setMat (const char *name, const Mat &value)
void setMatVector (const char *name, const vector< Mat > &value)
void setAlgorithm (const char *name, const Ptr< Algorithm > &value)
template<typename _Tp >
void setAlgorithm (const char *name, const Ptr< _Tp > &value)
string paramHelp (const string &name) const
int paramType (const char *name) const
int paramType (const string &name) const
void getParams (CV_OUT vector< string > &names) const
virtual void write (FileStorage &fs) const
virtual void read (const FileNode &fn)

Protected Attributes

Size frameSize
int frameType
Mat bgmodel
Mat bgmodelUsedModes
int nframes
int history
int nmixtures
double varThreshold
float backgroundRatio
float varThresholdGen
float fVarInit
float fVarMin
float fVarMax
float fCT
bool bShadowDetection
unsigned char nShadowDetection
float fTau

Additional Inherited Members

- Public Types inherited from cv::Algorithm
typedef Algorithm *(* Constructor) (void)
typedef int(Algorithm::* Getter) () const
typedef void(Algorithm::* Setter) (int)
- Static Public Member Functions inherited from cv::Algorithm
static void getList (CV_OUT vector< string > &algorithms)
static Ptr< Algorithm_create (const string &name)
template<typename _Tp >
static Ptr< _Tp > create (const string &name)

Detailed Description

The class implements the following algorithm: "Improved adaptive Gausian mixture model for background subtraction" Z.Zivkovic International Conference Pattern Recognition, UK, August, 2004.

Constructor & Destructor Documentation

§ BackgroundSubtractorMOG2() [1/2]

cv::BackgroundSubtractorMOG2::BackgroundSubtractorMOG2 ( )

the default constructor

§ BackgroundSubtractorMOG2() [2/2]

cv::BackgroundSubtractorMOG2::BackgroundSubtractorMOG2 ( int  history,
float  varThreshold,
bool  bShadowDetection = true 

the full constructor that takes the length of the history, the number of gaussian mixtures, the background ratio parameter and the noise strength

§ ~BackgroundSubtractorMOG2()

virtual cv::BackgroundSubtractorMOG2::~BackgroundSubtractorMOG2 ( )

the destructor

Member Function Documentation

§ getBackgroundImage()

virtual void cv::BackgroundSubtractorMOG2::getBackgroundImage ( OutputArray  backgroundImage) const

computes a background image which are the mean of all background gaussians

Reimplemented from cv::BackgroundSubtractor.

§ info()

virtual AlgorithmInfo* cv::BackgroundSubtractorMOG2::info ( ) const

Reimplemented from cv::Algorithm.

§ initialize()

virtual void cv::BackgroundSubtractorMOG2::initialize ( Size  frameSize,
int  frameType 

re-initiaization method

§ operator()()

virtual void cv::BackgroundSubtractorMOG2::operator() ( InputArray  image,
OutputArray  fgmask,
double  learningRate = -1 

the update operator

Reimplemented from cv::BackgroundSubtractor.

Member Data Documentation

§ backgroundRatio

float cv::BackgroundSubtractorMOG2::backgroundRatio

§ bgmodel

Mat cv::BackgroundSubtractorMOG2::bgmodel

§ bgmodelUsedModes

Mat cv::BackgroundSubtractorMOG2::bgmodelUsedModes

§ bShadowDetection

bool cv::BackgroundSubtractorMOG2::bShadowDetection

§ fCT

float cv::BackgroundSubtractorMOG2::fCT

§ frameSize

Size cv::BackgroundSubtractorMOG2::frameSize

§ frameType

int cv::BackgroundSubtractorMOG2::frameType

§ fTau

float cv::BackgroundSubtractorMOG2::fTau

§ fVarInit

float cv::BackgroundSubtractorMOG2::fVarInit

§ fVarMax

float cv::BackgroundSubtractorMOG2::fVarMax

§ fVarMin

float cv::BackgroundSubtractorMOG2::fVarMin

§ history

int cv::BackgroundSubtractorMOG2::history

§ nframes

int cv::BackgroundSubtractorMOG2::nframes

§ nmixtures

int cv::BackgroundSubtractorMOG2::nmixtures

§ nShadowDetection

unsigned char cv::BackgroundSubtractorMOG2::nShadowDetection

§ varThreshold

double cv::BackgroundSubtractorMOG2::varThreshold

here it is the maximum allowed number of mixture components. Actual number is determined dynamically per pixel

§ varThresholdGen

float cv::BackgroundSubtractorMOG2::varThresholdGen

The documentation for this class was generated from the following file: