JPS58112177A - 文字認識装置 - Google Patents

文字認識装置

Info

Publication number
JPS58112177A
JPS58112177A JP57200521A JP20052182A JPS58112177A JP S58112177 A JPS58112177 A JP S58112177A JP 57200521 A JP57200521 A JP 57200521A JP 20052182 A JP20052182 A JP 20052182A JP S58112177 A JPS58112177 A JP S58112177A
Authority
JP
Japan
Prior art keywords
threshold
circuit
signal
time
value
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
JP57200521A
Other languages
English (en)
Japanese (ja)
Other versions
JPS616433B2 (OSRAM
Inventor
ラ−ス・オロフ・ホ−ルバ−グ
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
Publication of JPS58112177A publication Critical patent/JPS58112177A/ja
Publication of JPS616433B2 publication Critical patent/JPS616433B2/ja
Granted 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)
JP57200521A 1981-12-23 1982-11-17 文字認識装置 Granted JPS58112177A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP81850252.8 1981-12-23
EP81850252A EP0082236B1 (en) 1981-12-23 1981-12-23 Method of recognizing characters in an optical document reader

Publications (2)

Publication Number Publication Date
JPS58112177A true JPS58112177A (ja) 1983-07-04
JPS616433B2 JPS616433B2 (OSRAM) 1986-02-26

Family

ID=8188743

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57200521A Granted JPS58112177A (ja) 1981-12-23 1982-11-17 文字認識装置

Country Status (4)

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

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
EP0082236A1 (en) 1983-06-29
DE3174105D1 (en) 1986-04-17
EP0082236B1 (en) 1986-03-12
US4584703A (en) 1986-04-22
JPS616433B2 (OSRAM) 1986-02-26

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