org.bytedeco.opencv.opencv_video

Class BackgroundSubtractor

java.lang.Object

org.bytedeco.javacpp.Pointer

org.bytedeco.opencv.opencv_core.Algorithm

org.bytedeco.opencv.opencv_video.BackgroundSubtractor

All Implemented Interfaces:

AutoCloseable

Direct Known Subclasses:

BackgroundSubtractorCNT, BackgroundSubtractorGMG, BackgroundSubtractorGSOC, BackgroundSubtractorKNN, BackgroundSubtractorLSBP, BackgroundSubtractorMOG, BackgroundSubtractorMOG, BackgroundSubtractorMOG2

@Namespace(value="cv")
 @Properties(inherit=opencv_video.class)
public class BackgroundSubtractor
extends Algorithm

\addtogroup video_motion \{

/** \brief Base class for background/foreground segmentation. :

The class is only used to define the common interface for the whole family of background/foreground segmentation algorithms.

Nested Class Summary

Nested classes/interfaces inherited from class org.bytedeco.javacpp.Pointer

Pointer.CustomDeallocator, Pointer.Deallocator, Pointer.NativeDeallocator, Pointer.ReferenceCounter

Field Summary

Fields inherited from class org.bytedeco.javacpp.Pointer

address, capacity, limit, position

Constructor Summary

Constructors

Constructor and Description
BackgroundSubtractor(Pointer p) Pointer cast constructor.

Method Summary

Modifier and Type	Method and Description
void	apply(GpuMat image, GpuMat fgmask)
void	apply(GpuMat image, GpuMat fgmask, double learningRate)
void	apply(Mat image, Mat fgmask)
void	apply(Mat image, Mat fgmask, double learningRate) \brief Computes a foreground mask.
void	apply(UMat image, UMat fgmask)
void	apply(UMat image, UMat fgmask, double learningRate)
void	getBackgroundImage(GpuMat backgroundImage)
void	getBackgroundImage(Mat backgroundImage) \brief Computes a background image.
void	getBackgroundImage(UMat backgroundImage)

Methods inherited from class org.bytedeco.opencv.opencv_core.Algorithm

clear, empty, getDefaultName, position, read, save, save, write, write, write

Methods inherited from class org.bytedeco.javacpp.Pointer

address, asBuffer, asByteBuffer, availablePhysicalBytes, calloc, capacity, capacity, close, deallocate, deallocate, deallocateReferences, deallocator, deallocator, equals, fill, formatBytes, free, hashCode, isNull, isNull, limit, limit, malloc, maxBytes, maxPhysicalBytes, memchr, memcmp, memcpy, memmove, memset, offsetof, parseBytes, physicalBytes, position, put, realloc, referenceCount, releaseReference, retainReference, setNull, sizeof, toString, totalBytes, totalPhysicalBytes, withDeallocator, zero

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

BackgroundSubtractor

public BackgroundSubtractor(Pointer p)

Pointer cast constructor. Invokes Pointer.Pointer(Pointer).

Method Detail

apply

public void apply(@ByVal
                  Mat image,
                  @ByVal
                  Mat fgmask,
                  double learningRate)

\brief Computes a foreground mask.

Parameters:

image - Next video frame.

fgmask - The output foreground mask as an 8-bit binary image.

learningRate - The value between 0 and 1 that indicates how fast the background model is learnt. Negative parameter value makes the algorithm to use some automatically chosen learning rate. 0 means that the background model is not updated at all, 1 means that the background model is completely reinitialized from the last frame.

apply

public void apply(@ByVal
                  Mat image,
                  @ByVal
                  Mat fgmask)

apply

public void apply(@ByVal
                  UMat image,
                  @ByVal
                  UMat fgmask,
                  double learningRate)

apply

public void apply(@ByVal
                  UMat image,
                  @ByVal
                  UMat fgmask)

apply

public void apply(@ByVal
                  GpuMat image,
                  @ByVal
                  GpuMat fgmask,
                  double learningRate)

apply

public void apply(@ByVal
                  GpuMat image,
                  @ByVal
                  GpuMat fgmask)

getBackgroundImage

public void getBackgroundImage(@ByVal
                               Mat backgroundImage)

\brief Computes a background image.

Parameters:

backgroundImage - The output background image.

\note Sometimes the background image can be very blurry, as it contain the average background statistics.

getBackgroundImage

public void getBackgroundImage(@ByVal
                               UMat backgroundImage)

getBackgroundImage

public void getBackgroundImage(@ByVal
                               GpuMat backgroundImage)