code: public void performTracking( T image ) {
  		if( image.width != imageWidth || image.height != imageHeight )
  			throw new IllegalArgumentException("Tracking image size is not the same as " +
  					"input image. Expected "+imageWidth+" x "+imageHeight);
  		updateTrackLocation(image);
  		if( interp_factor != 0 )
  			performLearning(image);
  	}
docs: Search for the track in the image and
  
  @param image Next image in the sequence