code: public void initialize( T image , int x0 , int y0 , int regionWidth , int regionHeight ) {
  
  		this.imageWidth = image.width;
  		this.imageHeight = image.height;
  
  		setTrackLocation(x0,y0,regionWidth,regionHeight);
  
  		initialLearning(image);
  	}
docs: Initializes tracking around the specified rectangle region
  @param image Image to start tracking from
  @param x0 top-left corner of region
  @param y0 top-left corner of region
  @param regionWidth region's width
  @param regionHeight region's height