如何使用PIL / Pillow将图像合并到画布中？ [英] How do you merge images into a canvas using PIL/Pillow?

问题描述

我不熟悉PIL，但我知道很容易把一堆图像放在ImageMagick的网格中。

I'm not familiar with PIL, but I know it's very easy to put a bunch of images into a grid in ImageMagick.

我如何，将16个图像放入4× 4网格中，我可以指定行和列之间的间隙？

How do I, for example, put 16 images into a 4×4 grid where I can specify the gap between rows and columns?

推荐答案

在 PIL 中也做。创建空白图片，然后只需使用粘贴。下面是一个简单的例子：

This is easy to do in PIL too. Create an empty image and just paste in the images you want at whatever positions you need using paste. Here's a quick example:

import Image

#opens an image:
im = Image.open("1_tree.jpg")
#creates a new empty image, RGB mode, and size 400 by 400.
new_im = Image.new('RGB', (400,400))

#Here I resize my opened image, so it is no bigger than 100,100
im.thumbnail((100,100))
#Iterate through a 4 by 4 grid with 100 spacing, to place my image
for i in xrange(0,500,100):
    for j in xrange(0,500,100):
        #I change brightness of the images, just to emphasise they are unique copies.
        im=Image.eval(im,lambda x: x+(i+j)/30)
        #paste the image at location i,j:
        new_im.paste(im, (i,j))

new_im.show()

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