Laurence Broadbent, Khemraj Emrith, Abdul R. Farooq, Melvyn L. Smith, Lyndon N. Smith. 2.5D Facial Expression Recognition using Photometric Stereo and the Area Weighted Histogram of Shape Index. In The 21st IEEE International Symposium on Robot and Human Interactive Communication, IEEE RO-MAN 2012, Paris, France, September 9-13, 2012. pages 490-495, IEEE, 2012. [doi]