将图像裁成6等分

import os
import cv2
import numpy as np
import json

def crop_img(path):
    """
    :param path: 文件路径
    :return: 无
    将图像裁成6份，上下二等分，左右三等分
    """
    files = os.listdir(path)
    for i, file in enumerate(files):
        print("第 %d 共 %d" % (i + 1, len(files)))
        filepath = os.path.join(path,file)
        # 路径含有中文只能这样读取
        img = cv2.imdecode(np.fromfile(filepath, dtype=np.uint8), -1)
        h,w = img.shape
        for j in range(6):
            imgj = img[int((j//3) * (h/2)):int((j//3 + 1) * (h/2)),int((j%3) * (w/3)):int((j%3 + 1) * (w/3))]
            cv2.imencode('.jpg', imgj)[1].tofile(os.path.join(path,'%03d_%d.jpg'%(i,j)))
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21