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:
Mar. 26, 2013
Filed:
Jul. 08, 2010
Min-kyu Park, Seoul, KR;
Hee-chan Park, Seoul, KR;
Jin-ho Kim, Seoul, KR;
Ji-hye Kim, Goyang-si, KR;
Sung-dae Cho, Yongin-si, KR;
Moon-gi Kang, Seoul, KR;
Chang-won Kim, Seoul, KR;
Hyun-mook OH, Seoul, KR;
Min-Kyu Park, Seoul, KR;
Hee-Chan Park, Seoul, KR;
Jin-Ho Kim, Seoul, KR;
Ji-Hye Kim, Goyang-si, KR;
Sung-Dae Cho, Yongin-si, KR;
Moon-Gi Kang, Seoul, KR;
Chang-Won Kim, Seoul, KR;
Hyun-Mook Oh, Seoul, KR;
Abstract
A lens shading correction method and apparatus are provided for removing vignetting occurring in digital images due to lens shading. A white image captured by an image pickup device and an image pickup unit is separated into reference white images corresponding to color channels. A vignetting center having a maximum light intensity is estimated in each of the reference white images. Multiple reference segments on each of the reference white images are defined. A lens shading correction value corresponding to each pixel constituting the reference segments are calculated using a corresponding light intensity. A lens shading correction function corresponding to each reference segment is derived using a corresponding lens shading correction value. Vignetting of a general image received in a general image processing mode is removed, using the derived multiple lens shading correction functions.