From circle to 3-sphere: Head pose estimation by instance parameterization

Xi Peng, JunZhou Huang, Qiong Hu, Shaoting Zhang, Ahmed M. Elgammal, Dimitris N. Metaxas. From circle to 3-sphere: Head pose estimation by instance parameterization. Computer Vision and Image Understanding, 136:92-102, 2015. [doi]

@article{PengHHZEM15,
  title = {From circle to 3-sphere: Head pose estimation by instance parameterization},
  author = {Xi Peng and JunZhou Huang and Qiong Hu and Shaoting Zhang and Ahmed M. Elgammal and Dimitris N. Metaxas},
  year = {2015},
  doi = {10.1016/j.cviu.2015.03.008},
  url = {http://dx.doi.org/10.1016/j.cviu.2015.03.008},
  researchr = {https://researchr.org/publication/PengHHZEM15},
  cites = {0},
  citedby = {0},
  journal = {Computer Vision and Image Understanding},
  volume = {136},
  pages = {92-102},
}