Rapid auto-focus using classifier chains, MEMS and multiple object focusing
US8797448B2 · kind B2 · utility
9Cited by
71References
20Claims
0Family size
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Key dates
| Filing date | Feb 6, 2014 |
| Grant date | Aug 5, 2014 |
| Priority date | — |
| Expiry date | Feb 6, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T5/73
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A smart-focusing technique includes identifying an object of interest, such as a face, in a digital image. A focus-generic classifier chain is applied that is trained to match both focused and unfocused faces and/or data from a face tracking module is accepted. Multiple focus-specific classifier chains are applied, including a first chain trained to match substantially out of focus faces, and a second chain trained to match slightly out of focus faces. Focus position is rapidly adjusted using a MEMS component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.