CA2194491A1 - Character recognition system identification of scanned and real time handwritten characters - Google Patents

Character recognition system identification of scanned and real time handwritten characters

Info

Publication number
CA2194491A1
CA2194491A1 CA002194491A CA2194491A CA2194491A1 CA 2194491 A1 CA2194491 A1 CA 2194491A1 CA 002194491 A CA002194491 A CA 002194491A CA 2194491 A CA2194491 A CA 2194491A CA 2194491 A1 CA2194491 A1 CA 2194491A1
Authority
CA
Canada
Prior art keywords
character
handwritten characters
ordered
array
processor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002194491A
Other languages
French (fr)
Other versions
CA2194491C (en
Inventor
A. Julie Kadashevich
Mary F. Harvey
Kenneth C. Knowlton
Alexander N. Jourjine
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Global 360 Inc
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CA002617416A priority Critical patent/CA2617416C/en
Publication of CA2194491A1 publication Critical patent/CA2194491A1/en
Application granted granted Critical
Publication of CA2194491C publication Critical patent/CA2194491C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
    • G06V30/10—Character recognition
    • G06V30/22—Character recognition characterised by the type of writing
    • G06V30/226—Character recognition characterised by the type of writing of cursive writing
    • G06V30/2268—Character recognition characterised by the type of writing of cursive writing using stroke segmentation
    • G06V30/2272—Character recognition characterised by the type of writing of cursive writing using stroke segmentation with lexical matching
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
    • G06V30/10—Character recognition
    • G06V30/18—Extraction of features or characteristics of the image
    • G06V30/182—Extraction of features or characteristics of the image by coding the contour of the pattern
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
    • G06V30/10—Character recognition

Abstract

A handwritten character recognition system that includes a document scanner for generating scanned images of a previously created document containing handwritten characters, and a pen and digitizing tablet for real time entry of handwritten characters by a user. The handwritten character recognition system includes an image processor connected from the document scanner for receiving the scanned image of a previously created document and generating one or more ordered cluster arrays. The ordered cluster arrays contain spatially ordered coordinate arrays of skeletal image ares representing and corresponding to the strokes of the handwritten characters wherein the spatial order represents an induced time ordered sequence of creation of the strokes of the handwritten characters that emulates the sequence of creation of the character strokes. A low level recognition processor is connected from the time order in-duction processor for receiving the ordered cluster arrays and generating a sequential character array wherein the sequential character array contains a character list for each ordered cluster array and wherein each character list contains at least one character identification representing a possible interpretation of the corresponding ordered cluster array. A linguistic post processor may be connected from the low level recognition processor for receiving the sequential character array and generating an output string representing the most probable interpretation of the handwritten characters of the document.
CA002194491A 1995-06-07 1996-03-27 Character recognition system identification of scanned and real time handwritten characters Expired - Fee Related CA2194491C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002617416A CA2617416C (en) 1995-06-07 1996-03-27 Character recognition system identification of scanned and real time handwritten characters

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/484,630 1995-06-07
US08/484,630 US5970170A (en) 1995-06-07 1995-06-07 Character recognition system indentification of scanned and real time handwritten characters
PCT/US1996/004151 WO1996041302A1 (en) 1995-06-07 1996-03-27 Character recognition system identification of scanned and real time handwritten characters

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA002617416A Division CA2617416C (en) 1995-06-07 1996-03-27 Character recognition system identification of scanned and real time handwritten characters

Publications (2)

Publication Number Publication Date
CA2194491A1 true CA2194491A1 (en) 1996-12-19
CA2194491C CA2194491C (en) 2008-06-03

Family

ID=23924941

Family Applications (2)

Application Number Title Priority Date Filing Date
CA002653177A Abandoned CA2653177A1 (en) 1995-06-07 1996-03-27 Character recognition system identification of scanned and real time handwritten characters
CA002194491A Expired - Fee Related CA2194491C (en) 1995-06-07 1996-03-27 Character recognition system identification of scanned and real time handwritten characters

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA002653177A Abandoned CA2653177A1 (en) 1995-06-07 1996-03-27 Character recognition system identification of scanned and real time handwritten characters

Country Status (7)

Country Link
US (1) US5970170A (en)
EP (1) EP0774142B1 (en)
JP (3) JPH10507025A (en)
AU (1) AU706080B2 (en)
CA (2) CA2653177A1 (en)
DE (1) DE69610478T2 (en)
WO (1) WO1996041302A1 (en)

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Also Published As

Publication number Publication date
DE69610478D1 (en) 2000-11-02
JPH10507025A (en) 1998-07-07
JP4350109B2 (en) 2009-10-21
WO1996041302A1 (en) 1996-12-19
AU706080B2 (en) 1999-06-10
US5970170A (en) 1999-10-19
JP2006338687A (en) 2006-12-14
AU5374096A (en) 1996-12-30
EP0774142B1 (en) 2000-09-27
CA2653177A1 (en) 1996-12-19
EP0774142A1 (en) 1997-05-21
JP2009193603A (en) 2009-08-27
CA2194491C (en) 2008-06-03
DE69610478T2 (en) 2001-05-10

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