@inproceedings{shapeandlightdirectionsfromshadingand,
  title = {Shape and Light Directions From Shading and Polarization},
  author = {Trung Ngo Thanh and Hajime Nagahara and Rin-ichiro Taniguchi},
  year = {2015},
  booktitle = {CVPR 2015 6},
  url = {http://openaccess.thecvf.com/content_cvpr_2015/html/Thanh_Shape_and_Light_2015_CVPR_paper.html},
}