各位大佬，我正在用Sobel、SIFT feature extraction、Color histogram去做图像分类检索。想输入一张图片去检索相类似的图像，出现了以下错误，请问该怎么解决呢？万分感谢
# Define a function to find similar images
def find_similar_images(image_path, k=5):
# Load input image and compute descriptors
img = cv2.imread(image_path, cv2.IMREAD_GRAYSCALE)
img = cv2.resize(img, (img_size, img_size))
keypoints, descriptors = sift.detectAndCompute(img, None)
# If no keypoints are found, return an empty list
if descriptors is None:
return []文章来源：https://www.toymoban.com/news/detail-419221.html
# Convert descriptors to np.float32 data type
descriptors = descriptors.astype(np.float32)
# Compute distances between input image descriptors and dataset descriptors
matcher = cv2.FlannBasedMatcher()
matches = matcher.knnMatch(descriptors, data, k=2)
distances = [m[0].distance for m in matches]
文章来源地址https://www.toymoban.com/news/detail-419221.html
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