手动使用PIL的resize方法:

Use PIL's resize method manually:

image = image.resize((x, y), Image.ANTIALIAS)  # LANCZOS as of Pillow 2.7

接着是保存方法

quality_val = 90
image.save(filename, 'JPEG', quality=quality_val)

看看 ，看看他们是如何做到的.

Take a look at the source for models.py from Photologue to see how they do it.