ORB算法基于FAST角点检测和BRIEF描述符,可以有效地提取图像的特征信息。下面是使用ORB算法提取特征点和描述符的代码: ```python def extract_ORB_feature(img_file): img = cv2.imread(img_file) gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY) orb = cv2.ORB_create() keypoints, descriptors = orb.detect...