watu

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

imgname = 'subject03.wink.png'

img_input = cv2.imread(imgname)
gray= cv2.cvtColor(img_input,cv2.COLOR_BGR2GRAY)
sift = cv2.xfeatures2d.SIFT_create()
kp = sift.detect(gray,None)
img1 = cv2.drawKeypoints(gray,kp,img_input,flags=cv2.DRAW_MATCHES_FLAGS_DRAW_RICH_KEYPOINTS)

plt.subplot(211),plt.imshow(cv2.imread(imgname))
plt.title('Input Image'), plt.xticks([]), plt.yticks([])
plt.subplot(212),plt.imshow(img1)
plt.title('SIFT'), plt.xticks([]), plt.yticks([])
plt.show()