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OpenCV
3.4.12
Open Source Computer Vision
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Gaussian Mixture-based Background/Foreground Segmentation Algorithm. More...
#include <opencv2/cudabgsegm.hpp>
Public Member Functions | |
virtual void | apply (InputArray image, OutputArray fgmask, double learningRate, Stream &stream)=0 |
virtual void | getBackgroundImage (OutputArray backgroundImage, Stream &stream) const =0 |
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virtual void | apply (InputArray image, OutputArray fgmask, double learningRate=-1) CV_OVERRIDE=0 |
Computes a foreground mask. More... | |
virtual double | getBackgroundRatio () const =0 |
Returns the "background ratio" parameter of the algorithm. More... | |
virtual double | getComplexityReductionThreshold () const =0 |
Returns the complexity reduction threshold. More... | |
virtual bool | getDetectShadows () const =0 |
Returns the shadow detection flag. More... | |
virtual int | getHistory () const =0 |
Returns the number of last frames that affect the background model. More... | |
virtual int | getNMixtures () const =0 |
Returns the number of gaussian components in the background model. More... | |
virtual double | getShadowThreshold () const =0 |
Returns the shadow threshold. More... | |
virtual int | getShadowValue () const =0 |
Returns the shadow value. More... | |
virtual double | getVarInit () const =0 |
Returns the initial variance of each gaussian component. More... | |
virtual double | getVarMax () const =0 |
virtual double | getVarMin () const =0 |
virtual double | getVarThreshold () const =0 |
Returns the variance threshold for the pixel-model match. More... | |
virtual double | getVarThresholdGen () const =0 |
Returns the variance threshold for the pixel-model match used for new mixture component generation. More... | |
virtual void | setBackgroundRatio (double ratio)=0 |
Sets the "background ratio" parameter of the algorithm. More... | |
virtual void | setComplexityReductionThreshold (double ct)=0 |
Sets the complexity reduction threshold. More... | |
virtual void | setDetectShadows (bool detectShadows)=0 |
Enables or disables shadow detection. More... | |
virtual void | setHistory (int history)=0 |
Sets the number of last frames that affect the background model. More... | |
virtual void | setNMixtures (int nmixtures)=0 |
Sets the number of gaussian components in the background model. More... | |
virtual void | setShadowThreshold (double threshold)=0 |
Sets the shadow threshold. More... | |
virtual void | setShadowValue (int value)=0 |
Sets the shadow value. More... | |
virtual void | setVarInit (double varInit)=0 |
Sets the initial variance of each gaussian component. More... | |
virtual void | setVarMax (double varMax)=0 |
virtual void | setVarMin (double varMin)=0 |
virtual void | setVarThreshold (double varThreshold)=0 |
Sets the variance threshold for the pixel-model match. More... | |
virtual void | setVarThresholdGen (double varThresholdGen)=0 |
Sets the variance threshold for the pixel-model match used for new mixture component generation. More... | |
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virtual void | getBackgroundImage (OutputArray backgroundImage) const =0 |
Computes a background image. More... | |
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Algorithm () | |
virtual | ~Algorithm () |
virtual void | clear () |
Clears the algorithm state. More... | |
virtual bool | empty () const |
Returns true if the Algorithm is empty (e.g. in the very beginning or after unsuccessful read. More... | |
virtual String | getDefaultName () const |
virtual void | read (const FileNode &fn) |
Reads algorithm parameters from a file storage. More... | |
virtual void | save (const String &filename) const |
virtual void | write (FileStorage &fs) const |
Stores algorithm parameters in a file storage. More... | |
void | write (const Ptr< FileStorage > &fs, const String &name=String()) const |
simplified API for language bindings This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. More... | |
Additional Inherited Members | |
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template<typename _Tp > | |
static Ptr< _Tp > | load (const String &filename, const String &objname=String()) |
Loads algorithm from the file. More... | |
template<typename _Tp > | |
static Ptr< _Tp > | loadFromString (const String &strModel, const String &objname=String()) |
Loads algorithm from a String. More... | |
template<typename _Tp > | |
static Ptr< _Tp > | read (const FileNode &fn) |
Reads algorithm from the file node. More... | |
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void | writeFormat (FileStorage &fs) const |
Gaussian Mixture-based Background/Foreground Segmentation Algorithm.
The class discriminates between foreground and background pixels by building and maintaining a model of the background. Any pixel which does not fit this model is then deemed to be foreground. The class implements algorithm described in [251] .
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pure virtual |
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pure virtual |