Patent · US Active

Rapid auto-focus using classifier chains, MEMS and/or multiple object focusing

US8648959B2 · kind B2 · utility

39Cited by

71References

45Claims

0Family size

Assignee

Digitaloptics Corporation Europe Limited · IE

Inventors

Adrian Capata · Bucharest, RO
Stefan Petrescu · Pantelimon, RO
Petronel Bigioi · Galway, IE
Peter Corcoran · Claregalway, IE

Key dates

Filing date	Nov 11, 2010
Grant date	Feb 11, 2014
Priority date	—
Expiry date	Aug 30, 2031

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.