Method, apparatus and system using hierarchical histogram...

Details Method, apparatus and system using hierarchical histogram... Method, apparatus and system using hierarchical histogram...

2010-08-13

2011-11-01

Ometz, David (Department: 2622)

Television

Camera, system and detail

Combined image signal generator and general image signal...

C348S364000, C348S362000, C348S221100

Reexamination Certificate

active

08049791

ABSTRACT:
An automatic exposure control circuit and a method for generating a hierarchical histogram for exposure control. The control circuit and the method result in the generation of a histogram with sub-histograms of differing resolutions. The sub-histograms are used to adjust an image exposure setting according to a distribution of pixel values determined from the histogram.

REFERENCES:
patent: 5799106 (1998-08-01), Mooney et al.
patent: 6687400 (2004-02-01), Szeliski
patent: 7551777 (2009-06-01), Pichumani
patent: 2003/0098914 (2003-05-01), Easwar
patent: 2005/0057666 (2005-03-01), Hu et al.
patent: 2006/0008159 (2006-01-01), Kobayashi
patent: 2006/0044459 (2006-03-01), Kato
patent: 2006/0176467 (2006-08-01), Rafii et al.
patent: 2007/0154089 (2007-07-01), Kao
J. Lubin et al.-13 “Robust, Content-Dependent, High-Fidelity Watermark for Tracking in Digital Cinema,” inSecurity and Watermarking of Multimedia Contents V, Edward J. Delp III, Ping Wah Wong, Editors, Proceedings of SPIE vol. 5020 (2003) 10 pages.
N. McCaffrey “CMOS Active Pixel Sensors with Extended Dynamic Range,” Vision Show 2000 Sarnoff Corporation, Mar. 17, 2000, 21 pages.

Affiliated with

Also associated with

Rating

Method, apparatus and system using hierarchical histogram... 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, apparatus and system using hierarchical histogram..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method, apparatus and system using hierarchical histogram... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4287192