docs: public void setTransform( PixelTransform<Point2D_F32> undistToDist ) {
  		if( undistToDist != null ) {
  			InterpolatePixelS<T> interpolate = FactoryInterpolation.bilinearPixelS(imageType, BorderType.EXTENDED);
  			integralImage = new GImageGrayDistorted<>(undistToDist, interpolate);
  		} else {
  			integralImage = FactoryGImageGray.create(imageType);
  		}
  	}