programme phyton pour realiser un programme qui transforme une image en niveau de gris
from matplotlib import pyplot as plt
import matplotlib.image as mpimg
img = mpimg.imread('test.jpg')
R, G, B = img[:,:,0], img[:,:,1], img[:,:,2]
imgGray =0.2989* R +0.5870* G +0.1140* B
plt.imshow(imgGray, cmap='gray')
plt.show()