Mami Yamakita, Kenichi Takahashi, Keiichi Yamada, Osami Yamamoto, Shin Yamamoto. Measurement of Driver's Consciousness by Image Processing 2 -Detection of Concentration on Cellular Phone Call from Facial Expression Change coping with Individual Differences-. In Proceedings of the IEEE International Conference on Systems, Man and Cybernetics, Taipei, Taiwan, October 8-11, 2006. pages 1688-1692, IEEE, 2006. [doi]