Method for reading distorted bar codes

Details Method for reading distorted bar codes Method for reading distorted bar codes

1997-04-22

1999-07-27

Pitts, Harold I.

Registers

Coded record sensors

Particular sensor structure

235494, G06K 710

Patent

active

059294205

ABSTRACT:
Bar code decoding methods and apparatus are disclosed wherein prototype characters are generated using calculated bar code distortion attributes. The vector distance measurements between the scanned bar code characters and the prototype characters are advantageously utilized to provide advanced and improved decoding.

REFERENCES:
patent: 3701097 (1972-10-01), Wolff
patent: 3744026 (1973-07-01), Wolff
patent: 4323772 (1982-04-01), Serge
patent: 4757206 (1988-07-01), Ohta
patent: 4989074 (1991-01-01), Matsumoto
patent: 5369260 (1994-11-01), Schuessler
patent: 5408698 (1995-04-01), Serizawa et al.
patent: 5412196 (1995-05-01), Surka
patent: 5675137 (1997-10-01), Haagen et al.
AIM USA Specification ANSI/AIM BCI-1995 "A New Decode Algorithm for Binary Bar Codes" reprinted from "Pattern Recognition Letters" 15 (1994).

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