import cv2
import numpy as np
import matplotlib.pyplot as plt

img=cv2.imread("first.jpg",cv2.IMREAD_GRAYSCALE)
    #cv2.imshow('image',img)
    #cv2.waitKey(0)
    #cv2.destroyAllWindows()
plt.imshow(img,cmap="gray",interpolation='bicubic')
plt.show()

cv2.imwrite('watchgray.png',img)
