Takuma Funahashi Takayuki Fujiwara Hiroyasu Koshimizu Iris Tracking for Generating Novel Facial Interface Media. 347-350 2007 MVA http://b2.cvl.iis.u-tokyo.ac.jp/mva/proceedings/2007CD/papers/08-30.pdf conf/mva/2007 db/conf/mva/mva2007.html#FunahashiFK07