Title :
Robust automatic white balance algorithm using gray color points in images
Author :
Huo, Jun-yan ; Chang, Yi-lin ; Wang, Jing ; Wei, Xiao-xia
Author_Institution :
Nat. Key Lab. on Integrated Service Networks, Xidian Univ., Xi´´an, China
fDate :
5/1/2006 12:00:00 AM
Abstract :
A robust automatic white balance algorithm is proposed in this paper, using extracting gray color points in images for color temperature estimation. A gray color point is the point where R, G and B components are equivalent under the canonical light source. A little color deviation of the gray color point from gray under different color temperature is used to estimate the color temperature of the light source. The test results show that the proposed algorithm can provide a good perceive effect and has the advantage of easy realization, low complexity and robust convergence.
Keywords :
image colour analysis; light sources; automatic white balance algorithm; canonical light source; color temperature estimation; gray color points; little color deviation; Cameras; Convergence; Face; Humans; Image segmentation; Light sources; Pixel; Robustness; Temperature; Testing;
Journal_Title :
Consumer Electronics, IEEE Transactions on
DOI :
10.1109/TCE.2006.1649677