Video fingerprinting
US9323840B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2014 |
| Grant date | Apr 26, 2016 |
| Priority date | — |
| Expiry date | Apr 28, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/783
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A query fingerprint of a set of frames of video content captured at a client device may be generated. Multiple patches of the set of frames of video content may be selected and a value calculated for each of the selected multiple patches. The value for each patch may be indicated as a single bit along with an additional 1-bit value to indicate whether the patch value is weak. A database of known reference fingerprints may be queried using the generated query fingerprint. Matches between the query fingerprint and the reference fingerprints may be identified. Weak bits may be given reduced weight in identifying the match of fingerprints. Based on the matches, an identifier for the video content may be returned to the client device. The client device may use the received identifier to access the supplemental content.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.