Facial recognition and the open mouth problem
US7421098B2 · kind B2 · utility
6Cited by
27References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 16, 2005 |
| Grant date | Sep 2, 2008 |
| Priority date | — |
| Expiry date | Feb 16, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V20/653
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method, for electronic face recognition using geodesic representations, of processing such a geodesic representation of a face having a mouth and being able to adopt open-mouthed or closed mouth states, so that the electronic recognition works regardless of whether the mouth in the representation is open or closed. The method comprises: identifying a mouth region within a face; applying a topological constraint to the mouth region, and representing the face with the constraint. The topological constraint is chosen to render the geodesic representation invariant to the mouth state being open or closed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.