import cv2
import numpy as np
img = cv2.imread(‘yue.jpg’,1)
cv2.imshow(‘src’,img)
imgInfo = img.shape
hight = imgInfo[0]
width = imgInfo[1]
deep = imgInfo[2] #图片由rgb三原色构成
newImgInfo = (hight2,width,deep)
dst = np.zeros(newImgInfo,np.uint8)
for i in range(0,hight):
for j in range(0,width):
dst[i,j] = img[i,j]
**dst[hight2-i-1,j] = img[i,j]**
for x in range(0,width):
dst[hight,x] = (0,0,255) #（b,g,r）三原色，数字不同，改变的是颜色
cv2.imshow(‘dst’,dst)
cv2.waitKey(0)