code: public void createKLT() {
  		PkltConfig config = new PkltConfig();
  		config.templateRadius = 3;
  		config.pyramidScaling = new int[]{1,2,4,8};
  
  		tracker = FactoryPointTracker.klt(config, new ConfigGeneralDetector(600, 6, 1),
  				imageType, derivType);
  	}
docs: A simple way to create a Kanade-Lucas-Tomasi (KLT) tracker.