如何使用枕头将图像粘贴到更大的图像上? [英] How to paste an image onto a larger image using Pillow?

问题描述

我有一个相当简单的代码文件:

I've got a fairly simple code file:

from PIL import Image
til = Image.new("RGB",(50,50))
im = Image.open("tile.png") #25x25
til.paste(im)
til.paste(im,(23,0))
til.paste(im,(0,23))
til.paste(im,(23,23))
til.save("testtiles.png")

但是，当我尝试运行它时，出现以下错误:

However, when I attempt to run it, I get the following error:

Traceback (most recent call last):
    til.paste(im)
  File "C:\Python27\lib\site-packages\PIL\Image.py", line 1340, in paste
    self.im.paste(im, box)
ValueError: images do not match

是什么导致此错误?它们都是RGB图像，文档没有对此错误说任何话.

What is causing this error? They are both RGB images, the docs don't say anything about this error.

推荐答案

根据PIL文档( http://effbot.org/imagingbook/image.htm )，如果未传递"box"参数，则图像尺寸必须匹配.

The problem is in the first pasting - according to the PIL documentation (http://effbot.org/imagingbook/image.htm), if no "box" argument is passed, images' sizes must match.

我实际上误解了文档，您是对的，它不存在.但是从我这里的尝试来看，似乎没有传递第二个参数，大小必须匹配.如果要保持第二张图片的大小并将其放置在第一张图片的左上角，请执行以下操作:

I actually misunderstood the documentation, you are right, it's not there. But from what I tried here, it seems like passing no second argument, sizes must match. If you want to keep the second image's size and place it in the upper-left corner of the first image, just do:

...
til.paste(im,(0,0))
...

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