import numpy as np
import cv2
import matplotlib
matplotlib.use('TkAgg');
from matplotlib import pyplot  as plt

img = cv2.imread('images/closeup.jpg',0)
plt.imshow(img, cmap = 'gray', interpolation = 'bicubic')
plt.xticks([]), plt.yticks([])  # to hide tick values on X and Y axis
plt.show()
