Rotating beam ocular identification apparatus and method

Details Rotating beam ocular identification apparatus and method Rotating beam ocular identification apparatus and method

1981-02-17

1983-07-12

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

350 64, 350 65, 351221, 382 65, G06K 900, A61B 310

Patent

active

043933661

ABSTRACT:
In a method and apparatus for acquiring and recording an identification pattern from the reflectance of the fundus of an eye, a single light source is operable to produce a substantially columnar source beam of infrared light directed into the fixated eye from a plurality of sequential, angularly divergent positions. The light is focused on the retina and reflected in part out of the eye. Variations in the ocular structure contribute to various reflected intensities. The intensity of the reflected light is detected, measured and recorded for each sequential angularly divergent position forming a unique and repeatable identification pattern, or "signature" for each individual.

REFERENCES:
patent: 3973836 (1976-08-01), Govignon
patent: 4068932 (1978-01-01), Ohta et al.
patent: 4213678 (1980-07-01), Pomerantzeff et al.

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