code: public void detect(T input, QueueCorner exclude ) {
  
  		initializeDerivatives(input);
  
  		if (detector.getRequiresGradient() || detector.getRequiresHessian())
  			gradient.process(input, derivX, derivY);
  		if (detector.getRequiresHessian())
  			hessian.process(derivX, derivY, derivXX, derivYY, derivXY);
  
  		detector.setExcludeMaximum(exclude);
  		detector.process(input, derivX, derivY, derivXX, derivYY, derivXY);
  	}
docs: Detect features inside the image.  Excluding points in the exclude list.
  
  @param input Image being processed.
  @param exclude List of points that should not be returned.