| 摘要 |
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.
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