docs: public static <I extends ImageGray<I>, D extends ImageGray<D>>
  	GeneralFeatureIntensity<I,D>  fast( int pixelTol, int minCont, Class<I> imageType ) {
  		FastCornerDetector<I> alg =  FactoryIntensityPointAlg.fast(pixelTol, minCont, imageType);
  		return new WrapperFastCornerIntensity<>(alg);
  	}