@inproceedings{rob-han-04-htnorm,
  author = {Antonio {Robles-Kelly} and Edwin R. Hancock},
  title = {Surface Height Recovery from Surface Normals Using Manifold Embedding},
  booktitle = {Proceedings of the 2004 International Conference on Image Processing (ICIP)},
  publisher = {IEEE},
  location = {Singapore},
  year = 2004
}