python根据特征计算两张图片的相似度的代码
时间: 2023-05-22 21:02:42 浏览: 122
可以使用Python的OpenCV库计算两张图片的相似度,以下是一段示例代码:
``` python
import cv2
import numpy as np
def image_similarity(img1_path, img2_path):
img1 = cv2.imread(img1_path, cv2.IMREAD_GRAYSCALE)
img2 = cv2.imread(img2_path, cv2.IMREAD_GRAYSCALE)
if img1 is None or img2 is None:
return 0.0
orb = cv2.ORB_create()
keypoints1, descriptors1 = orb.detectAndCompute(img1, None)
keypoints2, descriptors2 = orb.detectAndCompute(img2, None)
bf_matcher = cv2.BFMatcher_create(cv2.NORM_HAMMING, crossCheck=True)
matches = bf_matcher.match(descriptors1, descriptors2)
similarity = np.average([match.distance for match in matches])
return 1 - similarity / 100
print(image_similarity('img1.jpg', 'img2.jpg'))
```
这个函数会返回两张图片的相似度,相似度范围在[0, 1]之间,如果是0说明两张图片不相似,如果是1说明两张图片完全相同。
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