calculate the eigen values and eigen vectors of an image.

hi, this is my code for: -converting the rgb image to hsv image -obtain the blob -obtain the eigen values

clear all;

i=imread('A.jpg');

x =imresize(i,[100 100]);

j=rgb2hsv(x);

s=j(:,:,2);

sthres=s>0.2;

sthres=imfill(sthres,'holes');

%figure(1), imshow(sthres);

CC=bwconncomp(sthres);

numPixels = cellfun(@numel,CC.PixelIdxList);

[biggest,idx] = max(numPixels);

sthres(CC.PixelIdxList{idx}) = 1;

%figure(1), imshow(sthres);

M=mean2(sthres);

C=(sthres-M)*(sthres-M)';

lamda=eig(C);

[V,D] = eig(C);

i m not sure if my code is correct. Could someone please tell me how to obtain the eigen vectors. V,D,W]=eig(__) is showing error. please let me know if my code is wrong.