docs: public <T extends ImageGray<T>> void corruptImage(T original , T corrupted )
  	{
  		GGrayImageOps.stretch(original, valueScale, valueOffset, 255.0, corrupted);
  		GImageMiscOps.addGaussian(corrupted, rand, valueNoise, 0, 255);
  		GPixelMath.boundImage(corrupted,0,255);
  	}