@inproceedings{efficientilluminantestimationforcolor,
  title = {Efficient Illuminant Estimation for Color Constancy Using Grey Pixels},
  author = {Kai-Fu Yang and Shao-Bing Gao and Yong-Jie Li},
  year = {2015},
  booktitle = {CVPR 2015 6},
  url = {http://openaccess.thecvf.com/content_cvpr_2015/html/Yang_Efficient_Illuminant_Estimation_2015_CVPR_paper.html},
}