@inproceedings{ijcai1977p148,
  title     = {A Cooperative Algorithm for Determining Surface Orientation from a Single View},
  author    = {Woodham, Robert J.},
  booktitle = {Proceedings of the Fifth International Joint Conference on
               Artificial Intelligence, {IJCAI-77}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {Raj Reddy},
  pages     = {635--640},
  year      = {1977},
  note      = {Vision},
  url       = {https://ijcai.org/proceedings/1977/148},
}