@inproceedings{kernelpcaanalysisofsurfacenormalsfor,
  title = {Kernel-PCA Analysis of Surface Normals for Shape-from-Shading},
  author = {Patrick Snape and Stefanos Zafeiriou},
  year = {2014},
  booktitle = {CVPR 2014 6},
  url = {http://openaccess.thecvf.com/content_cvpr_2014/html/Snape_Kernel-PCA_Analysis_of_2014_CVPR_paper.html},
}