Development of an intuitive interface based on facial orientations and gazing actions for auto-wheel chair operation - Nobuaki Nakazawa; Ilhwan Kim; Takashi Mori; Hiroki Murakawa; Motohiro Kano; Aya Maeda; Toshikazu Matsui; Kou Yamada (The 21st IEEE International Symposium on Robot and Human Interactive Communication, IEEE RO-MAN 2012, Paris, France, September 9-13, 2012, 2012)