Kang Ryoung Park Min Cheol Whang Joa Sang Lim A Study on Non-intrusive Facial and Eye Gaze Detection. 52-59 2005 conf/acivs/2005 ACIVS http://dx.doi.org/10.1007/11558484_7 db/conf/acivs/acivs2005.html#ParkWL05