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Created Mar 23, 2019
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#import required libraries
import cv2
import numpy as np
import matplotlib.pyplot as plt
%matplotlib inline
#show OpenCV version
#read the iamge and convert to grayscale
image = cv2.imread('index.png')
gray = cv2.cvtColor(image,cv2.COLOR_BGR2GRAY)
#create sift object
sift = cv2.xfeatures2d.SIFT_create()
#calculate keypoints and their orientation
keypoints,descriptors = sift.detectAndCompute(gray,None)
#plot keypoints on the image
with_keypoints = cv2.drawKeypoints(gray,keypoints)
#plot the image
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