Audio/Video fingerprint search accuracy using multiple search combining
US8266142B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 2008 |
| Grant date | Sep 11, 2012 |
| Priority date | — |
| Expiry date | Dec 28, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/783
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for use in identifying a segment of audio and/or video information comprises obtaining a query fingerprint at each of a plurality of spaced-apart time locations in said segment, searching fingerprints in a database for a potential match for each such query fingerprint, obtaining a confidence level of a potential match to a found fingerprint in the database for each such query fingerprint, and combining the results of searching for potential matches, wherein each potential match result is weighted by respective confidence level. A confidence level may be a function of at least one or both of (1) a measure of difference between a query fingerprint and a found fingerprint and (2) the relative timing relationship between the time location of a query fingerprint and the time location of a found fingerprint.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.