Python中用PIL/Pillow裁剪图片

如果系统中没有安装Pillow包，安装：

pip install pillow

# 导入pillow
from PIL import Image
 
# 加载原始图片
img = Image.open("lena.jpg")
 
# 从左上角开始 剪切 200*200的图片
img2 = img.crop((0, 0, 200, 200))
img2.save("lena2.jpg")

 

从右下角开始(200*200)

 

width = img.size[0]  # 图片大小
height = img.size[1]
img3 = img.crop(
    (
        width - 200,
        height - 200,
        width,
        height
    )
)
img3.save("lena3.jpg")

从中心开始（100*150）

half_the_width = img.size[0] / 2
half_the_height = img.size[1] / 2
img4 = img.crop(
    (
        half_the_width - 50,
        half_the_height - 75,
        half_the_width + 50,
        half_the_height + 75
    )
)
img4.save("lena4.jpg")

把图片填充为正方形

longer_side = max(img4.size)
horizontal_padding = (longer_side - img4.size[0]) / 2
vertical_padding = (longer_side - img4.size[1]) / 2
img5 = img4.crop(
    (
        -horizontal_padding,
        -vertical_padding,
        img4.size[0] + horizontal_padding,
        img4.size[1] + vertical_padding
    )
)
img5.save("lena5.jpg")