Photography – Eye tracking
Reexamination Certificate
2005-03-31
2008-09-30
Perkey, W. B. (Department: 2862)
Photography
Eye tracking
C351S210000, C250S205000
Reexamination Certificate
active
07430365
ABSTRACT:
An eye detection system for safe detection of the eye positions of a subject estimates the distance from the eye detection system to the subject and reduces the power level of at least one primary light source of the eye detection system if the subject is too close to the eye detection system. If the subject is not too close to the eye detection system, the power level of the at least one primary light source of the eye detection system is increased, provided the power level is below a predetermined maximum power level. Primary light from the at least one primary light source reflected from the subject is sensed by an imager to obtain one or more images, from which the eye positions of the subject are estimated.
REFERENCES:
patent: 5598145 (1997-01-01), Shimotani et al.
patent: 5790234 (1998-08-01), Matsuyama
patent: 7091471 (2006-08-01), Wenstrand et al.
J.E.Fouquet et al., “A Simple Optical Approach to Pupil Detection,” IEEE Comuputer Vision and Pattern Recognition Conference, Jun. 30, 2004, 3 pages.
Fouquet Julie
Ng Kee Yean
Wenstrand John Stewart
Avago Technologies ECBU (Singapore) Pte Ltd.
Perkey W. B.
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