docs: public void createSURF() {
  		ConfigFastHessian configDetector = new ConfigFastHessian();
  		configDetector.maxFeaturesPerScale = 250;
  		configDetector.extractRadius = 3;
  		configDetector.initialSampleSize = 2;
  		tracker = FactoryPointTracker.dda_FH_SURF_Fast(configDetector, null, null, imageType);
  	}