import cv2
import numpy as py
def salt(img):
IMAGE_FILE = img
img = cv2.imread(IMAGE_FILE)
print(img.shape[1])
for i in range(img.shape[0]):
for j in range(img.shape[1]):
img[i,j]=255
return img
if __name__=='__main__':
saltimg=salt("../image/lihao/hand.jpg")
实现将一张图片的每个像素都赋值为255