code: public static <T extends ImageBase<T>>
  	boolean invokeNativeGaussian(T input, T output, double sigma , int radius, T storage) {
  		boolean processed = false;
  		if( BOverrideBlurImageOps.gaussian != null ) {
  			try {
  				BOverrideBlurImageOps.gaussian.processGaussian(input,output,sigma,radius,storage);
  				processed = true;
  			} catch( RuntimeException ignore ) {}
  		}
  		return processed;
  	}
docs: TODO replace with native normalized?