06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] #绘制上部分原图
        # x保持不变， y = 2*h - y -1
        dst[height*2-i-1,j] = img[i,j] #绘制下部分镜像部分
for i in range(0,width):
    dst[height,i] = (0,0,255)#BGR
cv2.imshow('dst',dst)
cv2.waitKey(0)