TY  - JOUR
PY  - 2008//
TI  - A study of feature factors on sleepy expressions based on observational analysis of facial images
JO  - Transactions of Society of Automotive Engineers of Japan
A1  - Ishida, Kenji
A1  - Ito, Akiko
A1  - Kimura, Teiyuu
SP  - 3_251
EP  - 3_256
VL  - 39
IS  - 3
N2  - We researched feature factors of sleepiness expression to do observational analysis about some driver's facial images during a monotonous driving task. It was found that not only eyes condition" which was generally investigated but also "cheeks and oris relaxation" "eyebrows raising", "head slant" and "oris movement" were selected as the factors.<p />  <p>Language: ja</p>
LA  - ja
SN  - 0287-8321
UR  - http://dx.doi.org/10.11351/jsaeronbun.39.3_251
ID  - ref1
ER  -