code: public static <Input extends ImageGray<Input>,Output extends ImageGray<Output>>
  	void distortPL(Planar<Input> input , Planar<Output> output ,
  				   ImageDistort<Input,Output> distortion )
  	{
  		for( int band = 0; band < input.getNumBands(); band++ )
  			distortion.apply(input.getBand(band),output.getBand(band));
  	}
docs: Applies a distortion to a {@link Planar} image.
  
  @deprecated As of v0.19.  Use {@link FDistort} instead
  
  @param input Image being distorted. Not modified.
  @param output Output image. modified.
  @param distortion The distortion model
  @param <Input> Band type.