id: 70884492 dt: a an: 70884492 au: Yamaguchi, Kota; Komuro, Takashi; Ishikawa, Masatoshi ti: Ptz control with head tracking for video chat so: CHI Extended Abstracts, 3919-3924 (2009). py: 2009 pu: la: EN cc: ut: ci: li: doi:10.1145/1520340.1520594