How to boost the pixel difference of an image.

How to find the pixel difference of an image and how to boost the intensity of it.

Answer 1

[Image Analyst]

I'm not sure what you mean by pixel difference. Do you want to define that? Maybe it is:

pixelDifference = max(grayImage(:)) - min(grayImage(:));

Or perhaps you mean

pixelDifference = conv2(grayImage, [-1 -1 -1;-1 8 -1;-1 -1 -1]/8);

Or you could try imadjust() to increase the contrast (expand the histogram).