US Patent No. 9,495,451

IDENTIFYING VIDEO CONTENT VIA FINGERPRINT MATCHING


Patent No. 9,495,451
Issue Date November 15, 2016
Title Identifying Video Content Via Fingerprint Matching
Inventorship Wilson Harron, Berkeley, CA (US)
Assignee Gracenote, Inc., Emeryville, CA (US)

Claim of US Patent No. 9,495,451

1. A computer-implemented method, comprising:
accessing a query fingerprint of a single video frame of video content captured at a client device, the query fingerprint
being generated based on a first value of a first spatial region within the single video frame of video content, the first
value of the first spatial region being calculated by subtracting a spatial sub-region of the first spatial region from one
or more other spatial sub-regions of the first spatial region;

querying a database of reference fingerprints associated with video frames of known video content, each of the reference fingerprints
being generated based on spatial regions within a different single video frame of the known video content;

determining that the query fingerprint matches at least one of the reference fingerprints; and
identifying the video content captured at the client device based on the determination that the query fingerprint matches
at least one of the reference fingerprints.