Title :
A novel anti-vignetting method for color shading artifact suppression
Author :
Ja-Won Seo ; Jong-Hyub Lee
Author_Institution :
Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol. (KAIST), Daejeon, South Korea
Abstract :
In this paper, we present a novel automatic anti-vignetting method which effectively alleviates color shading artifacts regardless of ambient color temperature. The proposed method incorporates both a Color Temperature Metric (CTM) and a Vignetting Gain Control (VGC) algorithm in a commercial Image Signal Processor (ISP) which is embedded in mobile phone camera modules. Experimental results validate that our proposed method explicitly addresses the color shading problem in a wide variety of color temperatures.
Keywords :
cameras; gain control; image colour analysis; mobile handsets; mobile radio; ambient color temperature; automatic anti-vignetting method; color shading artifact suppression; color shading artifacts; color shading problem; color temperature metric; color temperatures; image signal processor; mobile phone camera modules; vignetting gain control algorithm; Cameras; Conferences; Consumer electronics; Image color analysis; Lighting; Robustness; Table lookup;
Conference_Titel :
Consumer Electronics (ICCE), 2013 IEEE International Conference on
Conference_Location :
Las Vegas, NV
Print_ISBN :
978-1-4673-1361-2
DOI :
10.1109/ICCE.2013.6486881
