Method and apparatus for auto focusing an imaging device

Details Method and apparatus for auto focusing an imaging device Method and apparatus for auto focusing an imaging device

2005-07-08

2009-12-29

Assouad, Patrick J (Department: 2862)

Photography

With exposure objective focusing means, focusing aid, or...

Having in-focus threshold adjustable

C396S121000, C382S171000, C382S172000, C382S173000, C382S272000, C382S273000

Reexamination Certificate

active

07639937

ABSTRACT:
A method and apparatus for accurately auto focusing a lens of an imaging device. In an exemplary embodiment, an imaged scene is split into an array of zones. The minimum and maximum sharpness score for each zone is determined over a plurality of lens positions. A histogram of the lens positions of the corresponding maximum sharpness score for each zone is created. The peak of the histogram is determined to be the best focus position for a given scene.

REFERENCES:
patent: 4796043 (1989-01-01), Izumi et al.
patent: 4878079 (1989-10-01), Hamada et al.
patent: 4899194 (1990-02-01), Hori
patent: 5003165 (1991-03-01), Sarfati et al.
patent: 5040228 (1991-08-01), Bose et al.
patent: 6140630 (2000-10-01), Rhodes
patent: 6204524 (2001-03-01), Rhodes
patent: 6310366 (2001-10-01), Rhodes et al.
patent: 6326652 (2001-12-01), Rhodes
patent: 6333205 (2001-12-01), Rhodes
patent: 6376868 (2002-04-01), Rhodes
Co-pending U.S. Appl. No. 11/354,126.

Affiliated with

Also associated with

Rating

Method and apparatus for auto focusing an imaging device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for auto focusing an imaging device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for auto focusing an imaging device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4114407