DE3671117D1 - Verfahren und vorrichtung zur zeichenextraktion. - Google Patents

Verfahren und vorrichtung zur zeichenextraktion.

Info

Publication number
DE3671117D1
DE3671117D1 DE8686906645T DE3671117T DE3671117D1 DE 3671117 D1 DE3671117 D1 DE 3671117D1 DE 8686906645 T DE8686906645 T DE 8686906645T DE 3671117 T DE3671117 T DE 3671117T DE 3671117 D1 DE3671117 D1 DE 3671117D1
Authority
DE
Germany
Prior art keywords
character extraction
character
extraction
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 - Lifetime
Application number
DE8686906645T
Other languages
English (en)
Inventor
S Ma
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.)
NCR International Inc
Original Assignee
NCR 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 NCR Corp filed Critical NCR Corp
Application granted granted Critical
Publication of DE3671117D1 publication Critical patent/DE3671117D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G06V30/16—Image preprocessing
    • G06V30/162—Quantising the image signal
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Image Analysis (AREA)
  • Facsimile Image Signal Circuits (AREA)
DE8686906645T 1985-11-08 1986-10-20 Verfahren und vorrichtung zur zeichenextraktion. Expired - Lifetime DE3671117D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/796,454 US4742557A (en) 1985-11-08 1985-11-08 Adaptive character extraction method and system
PCT/US1986/002211 WO1987003118A1 (en) 1985-11-08 1986-10-20 Method and apparatus for character extraction

Publications (1)

Publication Number Publication Date
DE3671117D1 true DE3671117D1 (de) 1990-06-13

Family

ID=25168224

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686906645T Expired - Lifetime DE3671117D1 (de) 1985-11-08 1986-10-20 Verfahren und vorrichtung zur zeichenextraktion.

Country Status (6)

Country Link
US (1) US4742557A (de)
EP (1) EP0245359B1 (de)
JP (1) JPH0693250B2 (de)
CA (1) CA1262966A (de)
DE (1) DE3671117D1 (de)
WO (1) WO1987003118A1 (de)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0668763B2 (ja) * 1988-04-11 1994-08-31 株式会社イーゼル 画像処理方法
US5054101A (en) * 1989-02-28 1991-10-01 E. I. Du Pont De Nemours And Company Thresholding of gray level images using fractal dimensions
FR2665597B1 (fr) * 1990-07-31 1995-11-17 Thomson Trt Defense Procede et dispositif de localisation en temps reel de contours rectilignes dans une image numerisee, notamment pour la reconnaissance de formes dans un traitement d'analyse de scene.
FR2665598A1 (fr) * 1990-07-31 1992-02-07 Thomson Trt Defense Procede pour determiner en temps reel l'existence d'une configuration rectiligne de pixels dans une image numerisee.
US5345242A (en) * 1990-09-27 1994-09-06 Loral Aerospace Corp. Clutter rejection using connectivity
US5381241A (en) * 1991-08-13 1995-01-10 Sharp Corporation Method for discriminating between figure and text areas of an image
US5337373A (en) * 1991-10-24 1994-08-09 International Business Machines Corporation Automatic threshold generation technique
US10361802B1 (en) 1999-02-01 2019-07-23 Blanding Hovenweep, Llc Adaptive pattern recognition based control system and method
US8352400B2 (en) 1991-12-23 2013-01-08 Hoffberg Steven M Adaptive pattern recognition based controller apparatus and method and human-factored interface therefore
US5335293A (en) * 1992-06-16 1994-08-02 Key Technology, Inc. Product inspection method and apparatus
US5384860A (en) * 1992-08-20 1995-01-24 Loral Aerospace Corp. Real time connectivity algorithm system
US5651077A (en) * 1993-12-21 1997-07-22 Hewlett-Packard Company Automatic threshold determination for a digital scanner
US5724435A (en) * 1994-04-15 1998-03-03 Hewlett Packard Company Digital filter and method of tracking a structure extending in three spatial dimensions
US6166740A (en) * 1994-04-15 2000-12-26 Hewlett Packard Company Method and system for viewing three-dimensional data for a tracked structure
FR2769733B1 (fr) * 1997-10-15 2000-01-07 Jeffrey Horace Johnson Procede d'extraction automatique d'inscriptions imprimees ou manuscrites sur un fond, dans une image numerique multiniveaux
DE69822608T2 (de) 1998-05-28 2005-01-05 International Business Machines Corp. Binarisierungsverfahren in einem Zeichenerkennungssystem
US6222642B1 (en) * 1998-08-10 2001-04-24 Xerox Corporation System and method for eliminating background pixels from a scanned image
US8364136B2 (en) 1999-02-01 2013-01-29 Steven M Hoffberg Mobile system, a method of operating mobile system and a non-transitory computer readable medium for a programmable control of a mobile system
US7904187B2 (en) 1999-02-01 2011-03-08 Hoffberg Steven M Internet appliance system and method
US7003153B1 (en) * 2000-09-29 2006-02-21 Sharp Laboratories Of America, Inc. Video contrast enhancement through partial histogram equalization
US7512258B2 (en) * 2005-07-19 2009-03-31 The Boeing Company System and method for passive wire detection
JP4215038B2 (ja) * 2005-09-16 2009-01-28 セイコーエプソン株式会社 画像処理装置、画像処理方法、およびプログラム
US7466243B2 (en) * 2005-10-13 2008-12-16 The Boeing Company System and method for passive wire detection
DE102007044575A1 (de) * 2007-09-19 2009-04-16 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Verfahren zur Anpassung wenigstens eines Parameters in einem gesteuerten oder geregelten System eines Fahrzeugs
US8073284B2 (en) 2008-04-03 2011-12-06 Seiko Epson Corporation Thresholding gray-scale images to produce bitonal images
TWI490760B (zh) * 2012-04-03 2015-07-01 Elan Microelectronics Corp A method and an apparatus for improving noise interference of a capacitive touch device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3715724A (en) * 1969-12-24 1973-02-06 Olivetti & Co Spa Apparatus for recognizing graphic symbols
US3737855A (en) * 1971-09-30 1973-06-05 Ibm Character video enhancement system
US4554593A (en) * 1981-01-02 1985-11-19 International Business Machines Corporation Universal thresholder/discriminator
ATE41833T1 (de) * 1981-01-05 1989-04-15 Image Processing Tech Verfahren und geraet zur umwandlung eines musters in eine binaere form.
US4544393A (en) * 1984-05-22 1985-10-01 Owens-Corning Fiberglas Corporation Rotary fiber forming method and apparatus
US4656665A (en) * 1985-01-15 1987-04-07 International Business Machines Corporation Thresholding technique for graphics images using histogram analysis
US4646355A (en) * 1985-03-15 1987-02-24 Tektronix, Inc. Method and apparatus for input picture enhancement by removal of undersired dots and voids

Also Published As

Publication number Publication date
EP0245359B1 (de) 1990-05-09
JPS63501323A (ja) 1988-05-19
WO1987003118A1 (en) 1987-05-21
CA1262966A (en) 1989-11-14
US4742557A (en) 1988-05-03
EP0245359A1 (de) 1987-11-19
JPH0693250B2 (ja) 1994-11-16

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Legal Events

Date Code Title Description
8328 Change in the person/name/address of the agent

Free format text: KAHLER, K., DIPL.-ING., 8948 MINDELHEIM KAECK, J., DIPL.-ING. DIPL.-WIRTSCH.-ING., PAT.-ANWAELTE, 8910 LANDSBERG

8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: NCR INTERNATIONAL INC., DAYTON, OHIO, US

8328 Change in the person/name/address of the agent

Free format text: KAHLER, K., DIPL.-ING., 8948 MINDELHEIM KAECK, J., DIPL.-ING. DIPL.-WIRTSCH.-ING., 8910 LANDSBERG FIENER, J., PAT.-ANWAELTE, 8948 MINDELHEIM

8327 Change in the person/name/address of the patent owner

Owner name: AT&T GLOBAL INFORMATION SOLUTIONS INTERNATIONAL IN

8327 Change in the person/name/address of the patent owner

Owner name: NCR INTERNATIONAL, INC. (N.D.GES.D.STAATES DELAWAR

8328 Change in the person/name/address of the agent

Free format text: V. BEZOLD & SOZIEN, 80799 MUENCHEN

8339 Ceased/non-payment of the annual fee