code: public static GrayS64 transform(GrayS64 input , GrayS64 transformed ) {
  		transformed = InputSanityCheck.checkDeclare(input,transformed,GrayS64.class);
  
  		ImplIntegralImageOps.transform(input, transformed);
  
  		return transformed;
  	}
docs: Converts a regular image into an integral image.
  
  @param input Regular image. Not modified.
  @param transformed Integral image. If null a new image will be created. Modified.
  @return Integral image.