遍历一张图片像素点

import cv2
TEST_PATH = './018.jpg'
im = cv2.imread(TEST_PATH, 0)  # 参数0为灰度显示，参数1为RGB显示

im_shape = im.shape  # im_shape[0]为高，im_shape[1]为宽
print(im_shape)

for i in range(0, (im_shape[1]-1)):
    for j in range(0, (im_shape[0]-1)):
    # something