System for verifying authenticity of various articles

Details System for verifying authenticity of various articles System for verifying authenticity of various articles

1987-02-26

1989-06-06

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

356 71, 356371, G06K 900

Patent

active

048378402

ABSTRACT:
Representations are developed that characterize an article for identification by comparison with a reference standard as an escort memory. The representations are reduced to a binary tri-level code covering two extreme possibilities and an intermediate range for indecisive cases. Characteristics are sensed by light in one form by interferometer techniques.

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