Improved Background-Foreground Segmentation Methods

Classes
class	cv::bgsegm::BackgroundSubtractorCNT
	Background subtraction based on counting. More...
class	cv::bgsegm::BackgroundSubtractorGMG
	Background Subtractor module based on the algorithm given in [64] . More...
class	cv::bgsegm::BackgroundSubtractorMOG
	Gaussian Mixture-based Background/Foreground Segmentation Algorithm. More...

Functions
Ptr< BackgroundSubtractorCNT >	cv::bgsegm::createBackgroundSubtractorCNT (int minPixelStability=15, bool useHistory=true, int maxPixelStability=15 *60, bool isParallel=true)
	Creates a CNT Background Subtractor. More...
Ptr< BackgroundSubtractorGMG >	cv::bgsegm::createBackgroundSubtractorGMG (int initializationFrames=120, double decisionThreshold=0.8)
	Creates a GMG Background Subtractor. More...
Ptr< BackgroundSubtractorMOG >	cv::bgsegm::createBackgroundSubtractorMOG (int history=200, int nmixtures=5, double backgroundRatio=0.7, double noiseSigma=0)
	Creates mixture-of-gaussian background subtractor. More...

Detailed Description

Function Documentation

createBackgroundSubtractorCNT()

Ptr<BackgroundSubtractorCNT> cv::bgsegm::createBackgroundSubtractorCNT	(	int	minPixelStability = 15,
		bool	useHistory = true,
		int	maxPixelStability = 15 *60,
		bool	isParallel = true
	)

Creates a CNT Background Subtractor.

Parameters

minPixelStability	number of frames with same pixel color to consider stable
useHistory	determines if we're giving a pixel credit for being stable for a long time
maxPixelStability	maximum allowed credit for a pixel in history
isParallel	determines if we're parallelizing the algorithm

createBackgroundSubtractorGMG()

Ptr<BackgroundSubtractorGMG> cv::bgsegm::createBackgroundSubtractorGMG	(	int	initializationFrames = 120,
		double	decisionThreshold = 0.8
	)

Creates a GMG Background Subtractor.

Parameters

initializationFrames	number of frames used to initialize the background models.
decisionThreshold	Threshold value, above which it is marked foreground, else background.

createBackgroundSubtractorMOG()

Ptr<BackgroundSubtractorMOG> cv::bgsegm::createBackgroundSubtractorMOG	(	int	history = 200,
		int	nmixtures = 5,
		double	backgroundRatio = 0.7,
		double	noiseSigma = 0
	)

Creates mixture-of-gaussian background subtractor.

Parameters

history	Length of the history.
nmixtures	Number of Gaussian mixtures.
backgroundRatio	Background ratio.
noiseSigma	Noise strength (standard deviation of the brightness or each color channel). 0 means some automatic value.