37. 毛玻璃效果

import cv2
import numpy as np
import random

img = cv2.imread('face.jpg', 1)
imgInfo = img.shape
height = imgInfo[0]
width = imgInfo[1] 

dst = np.zeros((height, width, 3), np.uint8)
# 边值
mm = 8
for m in range(0, height - mm):
    for n in range(0, width - mm):
        # 随机产生的像素索引
        index = int(random.random() * 8)
        (b, g, r) = img[m + index, n + index]
        dst[m, n] = (b, g, r)
        
cv2.imshow('src', img)
# 最边上的8像素没有填充 原始是0(黑色)
cv2.imshow('dst', dst)
cv2.waitKey(0)

毛玻璃效果如下：

image.png