Elliptical adaptive structure element based on eigen value decomposition in matlab

I am trying to generate elliptical adaptive structure element based on eigen value decomposition for inpainting purpose. I am having images of size 360*640. So far, I have been able to get to the level of eigen decomposition. Please, how can I proceed from here.

```

clc;

clear all;

Img = imread('lab1.jpg');

Img = double(Img);

M = 3;

sigma1 = 1;

rw = 3;

g = gradient(Img, sigma1);

cutoff = ceil(3*rw);

h = fspecial('gaussian',2*cutoff+1,rw);

H = conv2(g*g.',h,'same');

[V, e] = eig(H);

```