U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Method and apparatus for document classification from degraded images

Patent 5909510 Issued on June 1, 1999. Estimated Expiration Date: Icon_subject May 19, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Method and apparatus for automatic character type classification of European script documents
Patent #: 5375176
Issued on: 12/20/1994
Inventor: Spitz

Method and apparatus for automatic language determination of European script documents
Patent #: 5377280
Issued on: 12/27/1994
Inventor: Nakayama

Method and apparatus for automatic determination of text line, word and character cell spatial features
Patent #: 5384864
Issued on: 01/24/1995
Inventor: Spitz

Method and apparatus for automatic language determination of Asian language documents
Patent #: 5425110
Issued on: 06/13/1995
Inventor: Spitz

Method for matching text images and documents using character shape codes
Patent #: 5438628
Issued on: 08/01/1995
Inventor: Spitz, et al.

Method and apparatus for automatic character script determination
Patent #: 5444797
Issued on: 08/22/1995
Inventor: Spitz, et al.

Method and apparatus for enhanced automatic determination of text line dependent parameters
Patent #: 5513304
Issued on: 04/30/1996
Inventor: Spitz, et al.

Method and apparatus for highlighting and categorizing documents using coded word tokens
Patent #: 5526443
Issued on: 06/11/1996
Inventor: Nakayama

Relaxation word recognizer
Patent #: 5617488
Issued on: 04/01/1997
Inventor: Hong, et al.

Method and system for natural language translation
Patent #: 5768603
Issued on: 06/16/1998
Inventor: Brown, et al.

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Inventor

Assignee

Application

No. 858884 filed on 05/19/1997

US Classes:

382/229, Context analysis or word recognition (e.g., character string)382/173, IMAGE SEGMENTATION382/181, PATTERN RECOGNITION382/224, Classification382/227, With a multilevel classifier382/228, Statistical decision process382/239, Adaptive coding (i.e., changes based upon history, activity, busyness, etc.)715/500, PRESENTATION PROCESSING OF DOCUMENT715/530Edit, composition, or storage control

Examiners

Primary: Boudreau, Leo H.
Assistant: Patel, Kiran

Attorney, Agent or Firm

International Class

G06K 009/72

Abstract

A word shape token-based document classification system prepares a plurality of sets of training data degraded by image quality and selects the optimum training data set by examining scores from a relevance measurement. The system achieves high accuracy from a wide range of image quality.

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