Apparatus and method for identification and recognition of an it

Details Apparatus and method for identification and recognition of an it Apparatus and method for identification and recognition of an it

1994-04-15

1995-09-26

Boudreau, Leo H.

Image analysis

Pattern recognition

382218, 73606, G06K 900

Patent

active

054540453

ABSTRACT:
The present invention is a means and method for identification and recognition of an item by ultrasonic imaging of material microfeatures and/or macrofeatures within the bulk volume of a material. The invention is based upon ultrasonic interrogation and imaging of material microfeatures within the body of material by accepting only reflected ultrasonic energy from a preselected plane or volume within the material. An initial interrogation produces an identification reference. Subsequent new scans are statistically compared to the identification reference for making a match
on-match decision.

REFERENCES:
patent: 4690554 (1987-09-01), Froelich
patent: 4977601 (1990-12-01), Bicz
patent: 4988189 (1991-01-01), Kroupa et al.
patent: 5121444 (1992-06-01), Takizawa et al.
patent: 5140988 (1992-08-01), Stouffer et al.
patent: 5184622 (1993-02-01), Tomura
patent: 5258922 (1993-11-01), Grill
Ultrasonic Time Variable Gain Interface (TVGI), Battelle, Feb. 1991, (brochure).

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