图片镜像

import cv2
import numpy as np

img = cv2.imread("image0.jpg", 1)
cv2.imshow('src', img)
imgInfo = img.shape
height = imgInfo[0]
width = imgInfo[1]
deep = imgInfo[2]
newImgInfo = (height*2, width, deep)

dst = np.zeros(newImgInfo, np.uint8)  # uint8
for i in range(0, height):
    for j in range(0, width):
        dst[i, j] = img[i, j]
        # x y = 2 * h - y - 1
        dst[height*2-i-1, j] = img[i, j]

for i in range(0, width):
    dst[height, i] = (0, 0, 255)  # BGR

cv2.imshow('dst', dst)
cv2.waitKey(0)