Optical signature to enable image correction

Details Optical signature to enable image correction Optical signature to enable image correction

2010-03-17

2011-11-08

Reza, Mohammad (Department: 2436)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C713S159000, C713S172000, C380S051000, C380S052000, C380S201000, C380S216000, C380S245000, C380S250000, C380S251000, C725S019000, C725S023000, C283S077000, C283S078000, C283S113000, C399S064000, C399S301000

Reexamination Certificate

active

08055901

ABSTRACT:
A method and system for performing document image correction using a document reader is disclosed. The method includes generating a document image representative of a document having a deformation; decoding an optical pattern embedded in the document from the document image to determine an optical signature for the document; receiving document classification data associated with the optical signature; and applying an image correction technique to the document image based on the document classification data to generate a corrected document image. A document capable of being read by a document reader is also disclosed. The document includes a substrate and an optical pattern embedded on the substrate. The optical pattern is part of a background pattern printed on the substrate. The optical pattern defines an optical signature unique to the particular class of document and is associated with document classification data for the document.

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