Randomly neighbouring pixels from image

Hi all

I have choosed the image random pixels having my code below

clc

close all

clear all

im = imread('frame1.png');

[nRow,nCol,c] = size(im);

N1=25;

N2=25;

randRow = randi(nRow,[N1,1]);

randCol = randi(nCol,[N2,1]);

figure(1);imshow(im);

randimg=im(randRow,randCol,:);

figure(2);imshow(randimg);

Now I want to choose randomly neighbouring pixels from an image.any help is appreciated Thanks

[Image Analyst]

How is this different than http://www.mathworks.com/matlabcentral/answers/79922-how-can-i-randomly-choose-a-neighbouring-pixel-from-an-image?

Answer 1

[Nitin]

you could use imdilate with a strel to expand the pixels area