how to crop a size of 25x20 from a image if centre coordinates are known

I have an image with 100 small circles in it and i have the centre coordinates of these circles. How to crop 25x20 size image from the known centre coordinates and apply on all these 100 small circle coordinates on the image.

Answer 1

[KSSV]

Let (x,y) be your center pixl locations.

iwant = imcrop(I,[x-10 y-10 20 20]) ;