Python PIL.Image 图片操作

from PIL import Image

path = './test.png'
# 加载图片
im = Image.open(path)
# 显示图片
im.show()
# 图片大小
w, h = im.size
x, y = 0, 0
box = (x*w, y*h, (x+1)*w, (y+1)*h)
# 切片
piece = im.crop(box)
# 修改大小
new = im.resize(w*2,h*2)
# 保存
piece.save(path)

图片切割

import os
from PIL import Image
from tkinter import filedialog


def mkdir(path):
    if not os.path.exists(path):
        os.makedirs(path)


def cutImage(path_file, w, h):
    path_dir = os.path.dirname(path_file)
    new_dir = os.path.join(path_dir, 'test')
    mkdir(new_dir)

    im = Image.open(path_file)
    tw, th = im.size
    for x in range(int(tw/w)):
        for y in range(int(th/h)):
            piece = im.crop((x*w, y*h, (x+1)*w, (y+1)*h))
            piece = piece.resize((w*2, h*2))
            piece.save(new_dir+'/'+str(y)+'_'+str(x)+'.png', 'png')


if __name__ == '__main__':
    path_file = filedialog.askopenfilename(initialdir='.')
    print(path_file)
    if path_file:
        cutImage(path_file, 24, 24)