• scikit-image - https://scikit-image.org/

Unlike BRIEF, ORB is comparatively scale and rotation invariant while still employing the very efficient Hamming distance metric for matching. As such, it is preferred for real-time applications.

https://scikit-image.org/docs/dev/auto_examples/features_detection/plot_orb.html

Displays/Returns similarity match in percentage %

• Extract ORB Features and Compare the ORB Descriptors, Calulate the similarity index.