This function computes 1st and 2nd derivatives of an image using the 5-tap coefficients-This function computes 1st and 2nd derivatives of an image using the 5-tap coefficients

更实用的图像2D微分程序,matlab程序，里边的参数来自于published paper-derivatives of 2D image matlab

This function computes 1st and 2nd derivatives of an image using the 7-tap coefficients given by Farid and Simoncelli. The results are significantly more accurate than MATLAB s GRADIENT function on edges that are

This function computes 1st and 2nd derivatives of an image using the 5-tap coefficients