Patent Document ID: 8498487
Application ID: 12262463

Base Claim:
1. A computer-implemented method for matching a video data to a database containing a plurality of video fingerprints, comprising the steps of: calculating, using a processor, at least one fingerprint representing at least one query frame from the video data; indexing into the database using the at least one calculated fingerprint to find a set of candidate fingerprints; applying a score to each of the candidate fingerprints; selecting a subset of candidate fingerprints as proposed frames by rank ordering the candidate fingerprints; and attempting to match at least one fingerprint of at least one proposed frame based on a comparison of gradient-based descriptors associated with the at least one query frame and the at least one proposed frame.

---

Claim 8:
8. The method of claim 1 , wherein the score is inversely proportional to the number of frames in the database having a matching fingerprint and directly proportional to the area of a frame represented by the fingerprint.