Pillow-Python中Image.resize和Image.thumbnail有什么区别
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What is the difference between Image.resize and Image.thumbnail in Pillow-Python
提问by wolfgang
I want to resize an image in pillow-python, however I have 2 functions of choice to use:
我想在枕头 python 中调整图像大小，但是我有两个功能可供选择：
Image.resizehttp://pillow.readthedocs.org/en/latest/reference/Image.html#PIL.Image.Image.resize
Image.resizehttp://pillow.readthedocs.org/en/latest/reference/Image.html#PIL.Image.Image.resize
and
和
Image.thumbnailhttp://pillow.readthedocs.org/en/latest/reference/Image.html#PIL.Image.Image.thumbnail
Image.thumbnailhttp://pillow.readthedocs.org/en/latest/reference/Image.html#PIL.Image.Image.thumbnail
Both definitions point out to resizing the image, Which one should I be using?
两个定义都指出要调整图像大小，我应该使用哪一个？
回答by wolfgang
Image.resizeresizes to the dimensions you specify:
Image.resize调整到您指定的尺寸：
Image.resize([256,512],PIL.Image.ANTIALIAS) # resizes to 256x512 exactly
Image.thumbnailresizes to the largest size that (a) preserves the aspect ratio, (b) does not exceed the original image, and (c) does not exceed the size specified in the arguments of thumbnail.
Image.thumbnail调整到最大尺寸，(a) 保留纵横比，(b) 不超过原始图像，(c) 不超过thumbnail.
Image.thumbnail([256, 512],PIL.Image.ANTIALIAS) # resizes 512x512 to 256x256
Furthermore, calling thumbnailresizes it in place, whereas resizereturns the resized image.
此外，调用thumbnail会就地调整大小，而resize返回调整大小的图像。
