docs: public static <II extends ImageGray<II>>
  	OrientationIntegral<II> sliding_ii( ConfigSlidingIntegral config , Class<II> integralType)
  	{
  		if( config == null )
  			config = new ConfigSlidingIntegral();
  		config.checkValidity();
  
  		return (OrientationIntegral<II>)
  				new ImplOrientationSlidingWindowIntegral(config.objectRadiusToScale,config.samplePeriod,
  						config.windowSize,config.radius,config.weightSigma, config.sampleWidth,integralType);
  	}