MATLAB: How to use blockproc by location

Question

Hy all, is blockproc could be used to block by location(x,y) that i give? Ex: I have image with 64×64 pixels, and i want to turn white every pixel around location point(x,y), let's say i want to change [3 3] around the point. could blockproc do it? or there any suggestion for me?

Thanks, :).

Answer 1

Yes, you can even do that without blockproc(). Here's how

yourImage = uint8(255 * ones(yourImage));

that will turn every pixel, at every (x,y) location, white (assuming a uint8 image).

Also, see attached demos for blockproc().