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")
 

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