From: ImageAnalyst on
-hendy-
If you have an image, the image is in a numerical variable that is an
array. The elements of that array ARE your intensity values.

For example:

% Read in standard MATLAB demo image.
grayImage = imread('cameraman.tif');
imshow(grayImage, []);
title('Original Grayscale Image');
set(gcf, 'Position', get(0,'Screensize')); % Maximize figure.

Let's say you want the intensity value at row 100, column 230. Well
then you'd just say
intensityValue = grayImage(100, 230);

It's as simple as that.
From: Hendy Sutomo on
Thanks alot ImageAnalyst.
Now I get the idea.

-hendy-