Encoded symbol reader for a two-dimensional encoded symbol

Details Encoded symbol reader for a two-dimensional encoded symbol Encoded symbol reader for a two-dimensional encoded symbol

1995-03-16

1996-11-19

Rogers, Scott A.

Facsimile and static presentation processing

Facsimile

Coded character

382199, 235435, 235436, 235454, 235456, 235462, 235463, 235470, G06K 918, G06K 700, G06K 900

Patent

active

055768512

ABSTRACT:
In an encoded symbol reader for decoding a two-dimensional encoded symbol, an image of the symbol is read and primary image data which directly corresponds to the symbol is generated. Further, from the primary data, secondary image data having less information than the primary image data is generated. The edge of the encoded symbol is detected using the secondary image data, and then decoding of the encoded symbol using the primary image data within the area defined by the detected edge.

REFERENCES:
patent: 5304787 (1994-04-01), Wang
patent: 5319181 (1994-06-01), Shellhammer et al.
patent: 5343031 (1994-08-01), Yoshida

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