Device for detecting line of sight

Details Device for detecting line of sight Device for detecting line of sight

1993-10-27

1996-08-06

Adams, Russell E.

354 62, G03B 700

Patent

active

055438873

ABSTRACT:
A device is provided device for detecting the line of sight of an observer, based on the positions of the Purkinje's image and of the center of the pupil circle. The device is capable, in determining the pupil circle from the pupil edge data collected from the image sensor, of preventing erroneous estimation of the pupil circle resulting from false noise data, by partially excluding or adding the edge data in the estimation process of the pupil circle and evaluating the reliability of the obtained estimated circle.

REFERENCES:
patent: 3712716 (1973-01-01), Cornsweet et al.
patent: 4973149 (1990-11-01), Hutchinson
patent: 5036347 (1991-07-01), Tsunekawa et al.
patent: 5182443 (1993-01-01), Suda et al.
patent: 5280312 (1994-01-01), Yamada et al.
patent: 5327191 (1994-07-01), Shindo et al.
patent: 5335035 (1994-08-01), Maeda

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