写一个将图像切割成规定尺寸的图像块的python代码

示例代码：# 导入必要的模块
import cv2
import numpy as np# 读取图像
img = cv2.imread('image.jpg')# 将图像分割成规定尺寸的块
block_size = (32, 32)
w_num = img.shape[1] // block_size[0]
h_num = img.shape[0] // block_size[1]
for i in range(w_num):
for j in range(h_num):
block = img[j*block_size[1]: (j+1)*block_size[1],
i*block_size[0]: (i+1)*block_size[0]]
# 对切割后的图像块做一些处理……