├── Screenshot 2024-04-16 021602.png
├── README.md
├── sift.py
└── siftmatching.py


/Screenshot 2024-04-16 021602.png:
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https://raw.githubusercontent.com/Shehab-Hegab/sift/HEAD/Screenshot 2024-04-16 021602.png


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/README.md:
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1 | # sift grayscale
2 | 
3 | ![Screenshot 2024-04-16 021602](https://github.com/Shehab-Hegab/sift/assets/137138481/31f740fd-53df-4140-ad74-0b8c306665b0)
4 | 


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/sift.py:
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 1 | import cv2 
 2 | 
 3 | #sift
 4 | sift = cv2.SIFT_create()
 5 | 
 6 | #feature matching
 7 | bf = cv2.BFMatcher(cv2.NORM_L2, crossCheck=True)
 8 | 
 9 | 
10 | img1 = cv2.imread('house.jpg')  
11 | img2 = cv2.imread('house.jpg') 
12 | 
13 | img1 = cv2.cvtColor(img1, cv2.COLOR_BGR2GRAY)
14 | img2 = cv2.cvtColor(img2, cv2.COLOR_BGR2GRAY)
15 | 
16 | keypoints_1, descriptors_1 = sift.detectAndCompute(img1,None)
17 | keypoints_2, descriptors_2 = sift.detectAndCompute(img2,None)
18 | 
19 | matches = bf.match(descriptors_1,descriptors_2)
20 | matches = sorted(matches, key = lambda x:x.distance)
21 | 
22 | 
23 | img3 = cv2.drawMatches(img1, keypoints_1, img2, keypoints_2, matches[:600], img2, flags=2)
24 | 
25 | cv2.imshow('SIFT', img3)
26 | 
27 | cv2.waitKey(0)


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/siftmatching.py:
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 1 | import cv2 
 2 | import matplotlib.pyplot as plt
 3 | import time
 4 | 
 5 | #sift
 6 | sift = cv2.SIFT_create()
 7 | 
 8 | #feature matching
 9 | bf = cv2.BFMatcher(cv2.NORM_L2, crossCheck=True)
10 | 
11 | 
12 | cap = cv2.VideoCapture(0)
13 | 
14 | while cap.isOpened():
15 |     # read images
16 | 
17 |     suc, img1 = cap.read()
18 |     img2 = img1
19 |     #img1 = cv2.imread('pencil3.jpg')  
20 |     #img2 = cv2.imread('pencil3.jpg') 
21 | 
22 |     start = time.time()
23 | 
24 |     img1 = cv2.cvtColor(img1, cv2.COLOR_BGR2GRAY)
25 |     img2 = cv2.cvtColor(img2, cv2.COLOR_BGR2GRAY)
26 | 
27 |     keypoints_1, descriptors_1 = sift.detectAndCompute(img1,None)
28 |     keypoints_2, descriptors_2 = sift.detectAndCompute(img2,None)
29 | 
30 |     matches = bf.match(descriptors_1,descriptors_2)
31 |     matches = sorted(matches, key = lambda x:x.distance)
32 | 
33 |     end = time.time()
34 |     totalTime = end - start
35 | 
36 |     fps = 1 / totalTime
37 |     #print("FPS: ", fps)
38 |     
39 | 
40 |     img3 = cv2.drawMatches(img1, keypoints_1, img2, keypoints_2, matches[:300], img2, flags=2)
41 |     #plt.imshow(img3),plt.show()
42 |     cv2.putText(img3, f'FPS: {int(fps)}', (20,450), cv2.FONT_HERSHEY_SIMPLEX, 1.5, (0,255,0), 2)
43 |     cv2.imshow('SIFT', img3)
44 | 
45 |     if cv2.waitKey(5) & 0xFF == 27:
46 |         break
47 | 
48 | 
49 | cap.release()


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