docs: public static void hessianThree(GrayS16 inputDerivX , GrayS16 inputDerivY ,
  									GrayS16 derivXX, GrayS16 derivYY, GrayS16 derivXY ,
  									ImageBorder_S32 border ) {
  		InputSanityCheck.reshapeOneIn(inputDerivX, inputDerivY, derivXX, derivYY, derivXY);
  
  		GradientThree.process(inputDerivX,derivXX,derivXY,border);
  
  		if( border != null )
  			ConvolveImage.vertical(GradientThree.kernelDeriv_I32,inputDerivY,derivYY,
  					new ImageBorder1D_S32(BorderIndex1D_Extend.class));
  		else
  			ConvolveImageNoBorder.vertical(GradientThree.kernelDeriv_I32,inputDerivY,derivYY);
  	}