Visual axis detecting apparatus and method including scanning li

Details Visual axis detecting apparatus and method including scanning li Visual axis detecting apparatus and method including scanning li

1997-06-24

2000-08-15

Ho, Tuan

Television

Camera, system and detail

With electronic viewfinder or display monitor

348207, 396 51, H04N 5225

Patent

active

061044318

ABSTRACT:
A visual axis detecting method and apparatus comprising a device that illuminates an eye of an observer with a scanning light source, a photoelectric conversion device that receives reflection light from the eye of the observer, and an arithmetic device that detects Purkinje images and an iris image or a pupil image of the observer's eye on the basis of an output from the photoelectric conversion device, and that detects a direction of a visual axis of the observer from positions of the detected images.

REFERENCES:
patent: 3450466 (1969-06-01), Streisinger
patent: 3864030 (1975-02-01), Cornsweet
patent: 4373787 (1983-02-01), Crane et al.
patent: 5129400 (1992-07-01), Makino et al.
patent: 5214466 (1993-05-01), Nagano et al.
patent: 5335035 (1994-08-01), Maeda
patent: 5382989 (1995-01-01), Uomori et al.
patent: 5386258 (1995-01-01), Nagano

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