为什么PIL /枕式作物不起作用？

Question

I'm trying to use Pillow to crop an image, but it doesn't seem to work. I've got the following code:

im = Image.open('the_image.jpg')
print 'ORIGINAL SIZE: ', im.size
im.crop((1087, 0, 1820, 2197))
print 'CROPPED SIZE: ', im.size

which prints this in the terminal:

ORIGINAL SIZE:  (2908, 2197)
CROPPED SIZE:  (2908, 2197)

Does anybody know why the cropping doesn't seem to work? All tips are welcome!

Answer 1

Its because of that im.crop((1087, 0, 1820, 2197)) doesn't crop your image in-place but it returns the cropped image.

You can do :

im = Image.open('the_image.jpg')
print 'ORIGINAL SIZE: ', im.size
cr=im.crop((1087, 0, 1820, 2197))
print 'CROPPED SIZE: ', cr.size

Answer 2

或者你可以做

im.crop((1087, 0, 1820, 2197)).save('the_image.jpg','jpeg')