The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 08, 2011
Filed:
Dec. 05, 2008
Applicants:
Chan-min Chou, Taipei, TW;
Chung-pin LU, Taipei, TW;
Inventors:
Chan-Min Chou, Taipei, TW;
Chung-Pin Lu, Taipei, TW;
Assignee:
Altek Corporation, Hsinchu, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 7/00 (2006.01); H04N 5/235 (2006.01); H04N 5/222 (2006.01); H04N 9/73 (2006.01); G06K 9/40 (2006.01); G06K 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An image brightness correction method is described. First, a pre-flash is fired and a pre-flash image is shot. After a main flash duration is estimated according to the pre-flash image and an automatic exposure time of a camera device, a main flash is fired and a raw image is shot. Then, a brightness gain of the raw image is compensated according to a preset gain threshold, and a digital brightness gain of the image is adjusted to enable the image shot each time to achieve the same brightness gain.