Crop an image in the centre using PIL

Question

How can I crop an image in the center? Because I know that the box is a 4-tuple defining the left, upper, right, and lower pixel coordinate but I don't know how to get these coordinates so it crops in the center.

Answer 1

Assuming you know the size you would like to crop to (new_width X new_height):

import Image im = Image.open(<your image>) width, height = im.size   # Get dimensions  left = (width - new_width)/2 top = (height - new_height)/2 right = (width + new_width)/2 bottom = (height + new_height)/2  # Crop the center of the image im = im.crop((left, top, right, bottom)) 

This will break if you attempt to crop a small image larger, but I'm going to assume you won't be trying that (Or that you can catch that case and not crop the image).