Building 3D map for localization using human action. - Yukinobu Sakaguchi; Yasushi Mae; Naoki Sasao; Tomohito Takubo; Kenji Inoue; Tatsuo Arai (IROS, 2004)

3D model-based 6-DOF head tracking by a single camera for human-robot interaction. - Yoshio Matsumoto; Naoki Sasao; Tsuyoshi Suenaga; Tsukasa Ogasawara (ICRA, 2009)