US Patent No. 10,423,654

MEDIA FINGERPRINTING AND IDENTIFICATION SYSTEM


Patent No. 10,423,654
Issue Date September 24, 2019
Title Media Fingerprinting And Identification System
Inventorship Prashant Ramanathan, Mountain View, CA (US)
Jose Pio Pereira, Cupertino, CA (US)
Shashank Merchant, Sunnyvale, CA (US)
Mihailo M. Stojancic, San Jose, CA (US)
Assignee Gracenote, Inc., Emeryville, CA (US)

Claim of US Patent No. 10,423,654

1. A computer-implemented method comprising:establishing, using a video fingerprinting system, a rectangular grid of blocks overlaying pixels of a frame of a reference video, wherein each block of the rectangular grid of blocks includes a grid of pixels, and wherein boundaries of the rectangular grid of blocks are defined such that some of the blocks of the rectangular grid of blocks include different numbers of pixels;
determining, for respective blocks of the rectangular grid of blocks, using the video fingerprinting system, respective intensity values corresponding to pixels included within the respective blocks of the rectangular grid of blocks;
determining, for respective blocks of the rectangular grid of blocks, using the video fingerprinting system, respective block values based on the respective intensity values;
generating, using the video fingerprinting system, fingerprint data for the frame based on the respective block values; and
storing, in a reference database, the fingerprint data in association with an identifier of the reference video.