Media fingerprints that reliably correspond to media content with projection of moment invariants
US8891813B2 · kind B2 · utility
4Cited by
4References
31Claims
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Key dates
| Filing date | Nov 17, 2009 |
| Grant date | Nov 18, 2014 |
| Priority date | — |
| Expiry date | Jul 18, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V20/46
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A portion of media content is accessed. Components from a first and each subsequent spatial regions of the media content are sampled. Each spatial region has an unsegmented area. Each subsequent spatial region includes those within its area as elements thereof or the spatial regions may partially overlap. The regions may overlap independent of a hierarchical relationship between the regions. A media fingerprint is derived from the components of each of the spatial regions, which reliably corresponds to the media content portion, e.g., over geometric attacks such as rotation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.