Class BackgroundSubtractor

java.lang.Object
org.opencv.core.Algorithm
org.opencv.video.BackgroundSubtractor
Direct Known Subclasses:
BackgroundSubtractorKNN, BackgroundSubtractorMOG2

public class BackgroundSubtractor
extends Algorithm
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.
  • Constructor Details

  • Method Details

    • __fromPtr__

      public static BackgroundSubtractor __fromPtr__​(long addr)
    • apply

      public void apply​(Mat image, Mat fgmask, double learningRate)
      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​(Mat image, Mat fgmask)
      Computes a foreground mask.
      Parameters:
      image - Next video frame.
      fgmask - The output foreground mask as an 8-bit binary image. 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.
    • getBackgroundImage

      public void getBackgroundImage​(Mat backgroundImage)
      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.
    • finalize

      protected void finalize() throws Throwable
      Overrides:
      finalize in class Algorithm
      Throws:
      Throwable