Optimal automatic capture of facial movements and expressions in video sequences
US9129147B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2013 |
| Grant date | Sep 8, 2015 |
| Priority date | — |
| Expiry date | Jan 9, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/175
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Computerized methods for creating tracks of locations across frames of a video corresponding to a facial feature of a human. A set of feature location hypotheses is generated, as applied to images derived from the sequence of frames representing images of the human. Each hypothesis is refined, and a first set of confidence measures is associated with each hypothesis. A second set of confidence measures is associated with interframe transition, and a cost function that is a combination of hypotheses and transition confidence measures is minimized. A set of tracks is generated, characterizing each of a plurality of facial features within each frame of the sequence of frames. Performance analysis data may further be derived in a performance driven animation production pipeline, based on the generated tracks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.