DE3174105D1 - Method of recognizing characters in an optical document reader - Google Patents

Method of recognizing characters in an optical document reader

Info

Publication number
DE3174105D1
DE3174105D1 DE8181850252T DE3174105T DE3174105D1 DE 3174105 D1 DE3174105 D1 DE 3174105D1 DE 8181850252 T DE8181850252 T DE 8181850252T DE 3174105 T DE3174105 T DE 3174105T DE 3174105 D1 DE3174105 D1 DE 3174105D1
Authority
DE
Germany
Prior art keywords
document reader
recognizing characters
optical document
optical
recognizing
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.)
Expired
Application number
DE8181850252T
Other languages
German (de)
English (en)
Inventor
Lars Olof Hallberg
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of DE3174105D1 publication Critical patent/DE3174105D1/de
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06V30/16—Image preprocessing
    • G06V30/162—Quantising the image signal
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Character Input (AREA)
  • Character Discrimination (AREA)
DE8181850252T 1981-12-23 1981-12-23 Method of recognizing characters in an optical document reader Expired DE3174105D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP81850252A EP0082236B1 (en) 1981-12-23 1981-12-23 Method of recognizing characters in an optical document reader

Publications (1)

Publication Number Publication Date
DE3174105D1 true DE3174105D1 (en) 1986-04-17

Family

ID=8188743

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8181850252T Expired DE3174105D1 (en) 1981-12-23 1981-12-23 Method of recognizing characters in an optical document reader

Country Status (4)

Country Link
US (1) US4584703A (enExample)
EP (1) EP0082236B1 (enExample)
JP (1) JPS58112177A (enExample)
DE (1) DE3174105D1 (enExample)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4545070A (en) * 1982-04-30 1985-10-01 Fuji Electric Company, Ltd. Pattern discriminator
US4972501A (en) * 1984-03-01 1990-11-20 Canon Kabushiki Kaisha Image processing apparatus
US4704637A (en) * 1985-06-21 1987-11-03 Canon Kabushiki Kaisha Image processing apparatus
JPH0719275B2 (ja) * 1986-07-08 1995-03-06 住友電気工業株式会社 二値化回路
US5241661A (en) * 1987-03-27 1993-08-31 International Business Machines Corporation DMA access arbitration device in which CPU can arbitrate on behalf of attachment having no arbiter
US4845761A (en) * 1987-04-17 1989-07-04 Recognition Equipment Incorporated Letter mail address block locator system
US4982294A (en) * 1987-07-24 1991-01-01 Eastman Kodak Company Apparatus for enhancing and thresholding scanned microfilm images and methods for use therein
US5208873A (en) * 1987-09-10 1993-05-04 Minolta Camera Kabushiki Kaisha Image reader having an editor for setting a threshold value
US4845348A (en) * 1988-06-20 1989-07-04 Ncr Corporation Method and apparatus for reading bar code magnetic ink characters
US5198975A (en) * 1989-11-30 1993-03-30 Valley National Bank Apparatus and method for processing of check batches in banking operations
US5864629A (en) * 1990-09-28 1999-01-26 Wustmann; Gerhard K. Character recognition methods and apparatus for locating and extracting predetermined data from a document
US5537486A (en) * 1990-11-13 1996-07-16 Empire Blue Cross/Blue Shield High-speed document verification system
JPH04288692A (ja) * 1991-03-18 1992-10-13 Eastman Kodak Japan Kk 画像入力装置
US5600732A (en) * 1994-12-08 1997-02-04 Banctec, Inc. Document image analysis method
JP4100885B2 (ja) * 2001-07-11 2008-06-11 キヤノン株式会社 帳票認識装置、方法、プログラムおよび記憶媒体
US7283676B2 (en) * 2001-11-20 2007-10-16 Anoto Ab Method and device for identifying objects in digital images
US8249328B2 (en) 2008-12-09 2012-08-21 International Business Machines Corporation Optical imaging and analysis of a graphic symbol

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3104372A (en) * 1961-02-02 1963-09-17 Rabinow Engineering Co Inc Multilevel quantizing for character readers
US3613080A (en) * 1968-11-08 1971-10-12 Scan Data Corp Character recognition system utilizing feature extraction
US3715724A (en) * 1969-12-24 1973-02-06 Olivetti & Co Spa Apparatus for recognizing graphic symbols
US4021777A (en) * 1975-03-06 1977-05-03 Cognitronics Corporation Character reading techniques
DE2833942C2 (de) * 1978-08-02 1983-08-25 Computer Gesellschaft Konstanz Mbh, 7750 Konstanz Schaltungsanordnung zum automatischen Erkennen von handschriftlichen Markierungen
SE422714B (sv) * 1979-01-16 1982-03-22 Ibm Svenska Ab Anordning med styrdator for optisk teckenlosning, vilken styrdator bl a bereknar startpunkter for identifiering av ett tecken
US4239151A (en) * 1979-04-19 1980-12-16 International Business Machines Corporation Method and apparatus for reducing the number of rejected documents when reading bar codes
US4274079A (en) * 1979-07-12 1981-06-16 Burroughs Corporation Apparatus and method for dynamic font switching
SE448921B (sv) * 1980-10-08 1987-03-23 Ibm Svenska Ab Videosignaldetektor for detektering av inkommande analoga videosignaler fran en optisk dokumentlesare och for avgivande av digitala utgangssignaler
SE448922B (sv) * 1980-10-21 1987-03-23 Ibm Svenska Ab Metod for behandling av videodata vid ett optiskt teckenidentifieringssystem jemte en anordning for teckenidentifiering i en optisk dokumentlesare

Also Published As

Publication number Publication date
EP0082236B1 (en) 1986-03-12
JPS616433B2 (enExample) 1986-02-26
EP0082236A1 (en) 1983-06-29
US4584703A (en) 1986-04-22
JPS58112177A (ja) 1983-07-04

Similar Documents

Publication Publication Date Title
GB2162982B (en) Pen-type character recognition apparatus
DE3175537D1 (en) Segmentation apparatus and method for character recognition
DE3174105D1 (en) Method of recognizing characters in an optical document reader
GB2111910B (en) An identification card and a method of producing it
DE3176538D1 (en) Character segmentation method
JPS56140467A (en) Portable laser scanning system and method
JPS57178572A (en) Recognition of mechanical reading/coding characters
EP0119402A3 (en) Object recognition and identification method
EP0156394A3 (en) Method and apparatus for recognizing and displaying handwritten characters and figures
JPS57209571A (en) Optical reader
DE3262928D1 (en) Optical reader apparatus
DE3276974D1 (en) Optical character recognition system
GB2161006B (en) Character recognition apparatus
EP0146147A3 (en) Sectioning apparatus and method for optical character reader system
DE3176432D1 (en) Character recognition method and apparatus
DE3269059D1 (en) Optical reader
JPS574648A (en) Method and device for processing coded information
DE3172748D1 (en) Character recognition system
GB2161632B (en) Scanning optical card reader
EP0258577A3 (en) Optical character reader
JPS56153485A (en) Method of recognizing unknown characters or symbols on document and device used therefor
EP0131681A3 (en) Method of optical character recognition
GB2188465B (en) Optical character reader
JPS57168388A (en) Character information processing method using bar code
DE3175481D1 (en) Multi-registration in optical character recognition

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee