DE69426479D1 - Optische Mehrfontzeichenerkennung mit einem Verbindungsschachtelansatz - Google Patents

Optische Mehrfontzeichenerkennung mit einem Verbindungsschachtelansatz

Info

Publication number
DE69426479D1
DE69426479D1 DE69426479T DE69426479T DE69426479D1 DE 69426479 D1 DE69426479 D1 DE 69426479D1 DE 69426479 T DE69426479 T DE 69426479T DE 69426479 T DE69426479 T DE 69426479T DE 69426479 D1 DE69426479 D1 DE 69426479D1
Authority
DE
Germany
Prior art keywords
character recognition
connection box
optical multi
font character
box approach
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
DE69426479T
Other languages
English (en)
Other versions
DE69426479T2 (de
Inventor
Radovan V Krtolica
Sofya Malitsky
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Publication of DE69426479D1 publication Critical patent/DE69426479D1/de
Application granted granted Critical
Publication of DE69426479T2 publication Critical patent/DE69426479T2/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
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/70—Arrangements for image or video recognition or understanding using pattern recognition or machine learning
    • G06V10/74—Image or video pattern matching; Proximity measures in feature spaces
    • G06V10/75—Organisation of the matching processes, e.g. simultaneous or sequential comparisons of image or video features; Coarse-fine approaches, e.g. multi-scale approaches; using context analysis; Selection of dictionaries
    • G06V10/751—Comparing pixel values or logical combinations thereof, or feature values having positional relevance, e.g. template matching

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Theoretical Computer Science (AREA)
  • Medical Informatics (AREA)
  • Computing Systems (AREA)
  • Databases & Information Systems (AREA)
  • Evolutionary Computation (AREA)
  • General Health & Medical Sciences (AREA)
  • Artificial Intelligence (AREA)
  • Software Systems (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Character Discrimination (AREA)
  • Image Analysis (AREA)
DE69426479T 1993-10-19 1994-10-18 Optische Mehrfontzeichenerkennung mit einem Verbindungsschachtelansatz Expired - Lifetime DE69426479T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/138,864 US5539840A (en) 1993-10-19 1993-10-19 Multifont optical character recognition using a box connectivity approach

Publications (2)

Publication Number Publication Date
DE69426479D1 true DE69426479D1 (de) 2001-02-01
DE69426479T2 DE69426479T2 (de) 2001-06-07

Family

ID=22484004

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69426479T Expired - Lifetime DE69426479T2 (de) 1993-10-19 1994-10-18 Optische Mehrfontzeichenerkennung mit einem Verbindungsschachtelansatz

Country Status (4)

Country Link
US (1) US5539840A (de)
EP (1) EP0649113B1 (de)
JP (1) JP3618796B2 (de)
DE (1) DE69426479T2 (de)

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AU701613B2 (en) * 1995-01-24 1999-02-04 Zhijie Zheng Method and system for conjugate binary image analysis and processing
US6259814B1 (en) 1997-10-17 2001-07-10 Canon Kabushiki Kaisha Image recognition through localized interpretation
US6763137B1 (en) * 2000-09-14 2004-07-13 Canon Kabushiki Kaisha Recognition and clustering of connected components in bi-level images
US8171567B1 (en) 2002-09-04 2012-05-01 Tracer Detection Technology Corp. Authentication method and system
US20040090439A1 (en) * 2002-11-07 2004-05-13 Holger Dillner Recognition and interpretation of graphical and diagrammatic representations
EP2081130B1 (de) 2004-03-12 2013-07-24 Ingenia Holdings Limited Verfahren und Vorrichtung zur Erschaffung verifizierbarer Druckartikel und deren nachträglichen Prüfung
EP2131315A3 (de) * 2004-03-12 2011-01-26 Ingenia Technology Limited Authentifizierung durch großangelegte Beleuchtung
IL162878A0 (en) * 2004-07-06 2005-11-20 Hi Tech Solutions Ltd Multi-level neural network based characters identification method and system
GB2417592B (en) * 2004-08-13 2006-07-26 Ingenia Technology Ltd Authenticity verification of articles
GB2417074B (en) * 2004-08-13 2007-11-21 Ingenia Technology Ltd Authenticity verification methods,products and apparatuses
DE102005001224A1 (de) 2004-09-03 2006-03-09 Betriebsforschungsinstitut VDEh - Institut für angewandte Forschung GmbH Verfahren zur Zuordnung eines digitalen Bildes in eine Klasse eines Klassifizierungssystems
US7953983B2 (en) 2005-03-08 2011-05-31 Microsoft Corporation Image or pictographic based computer login systems and methods
RU2417448C2 (ru) * 2005-07-27 2011-04-27 Инджениа Холдингс Лимитед Верификация аутентичности
WO2007072044A1 (en) * 2005-12-23 2007-06-28 Ingenia Holdings (Uk) Limited Optical authentication
JP2007310577A (ja) * 2006-05-17 2007-11-29 Toshiba Corp 描画データ抽出装置、方法、およびプログラム
US8024775B2 (en) * 2008-02-20 2011-09-20 Microsoft Corporation Sketch-based password authentication
GB2466311B (en) 2008-12-19 2010-11-03 Ingenia Holdings Self-calibration of a matching algorithm for determining authenticity
GB2466465B (en) 2008-12-19 2011-02-16 Ingenia Holdings Authentication
US8458485B2 (en) 2009-06-17 2013-06-04 Microsoft Corporation Image-based unlock functionality on a computing device
GB2476226B (en) 2009-11-10 2012-03-28 Ingenia Holdings Ltd Optimisation
CN102385570A (zh) 2010-08-31 2012-03-21 国际商业机器公司 字体匹配方法和系统
AU2011202415B1 (en) 2011-05-24 2012-04-12 Microsoft Technology Licensing, Llc Picture gesture authentication
ITBA20110038A1 (it) 2011-07-12 2013-01-13 D A Bi Mus Srl Metodo e apparato per riconoscere testo in immagini digitali raffiguranti pagine di un documento antico
US20130077856A1 (en) * 2011-09-23 2013-03-28 General Electric Company Processes and systems for training machine typesets for character recognition
US9053359B2 (en) 2012-06-07 2015-06-09 Konica Minolta Laboratory U.S.A., Inc. Method and system for document authentication using Krawtchouk decomposition of image patches for image comparison
US9230383B2 (en) * 2012-12-28 2016-01-05 Konica Minolta Laboratory U.S.A., Inc. Document image compression method and its application in document authentication
US9946945B2 (en) 2016-04-08 2018-04-17 Intelligent Security Systems Corporation Systems and methods for recognizing symbols in images
US10679101B2 (en) * 2017-10-25 2020-06-09 Hand Held Products, Inc. Optical character recognition systems and methods
US11887731B1 (en) * 2019-04-22 2024-01-30 Select Rehabilitation, Inc. Systems and methods for extracting patient diagnostics from disparate

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US3846752A (en) * 1972-10-02 1974-11-05 Hitachi Ltd Character recognition apparatus
US3993976A (en) * 1974-05-13 1976-11-23 The United States Of America As Represented By The Secretary Of The Air Force Method and apparatus for pattern analysis
US3930231A (en) * 1974-06-10 1975-12-30 Xicon Data Entry Corp Method and system for optical character recognition
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US4513441A (en) * 1983-08-02 1985-04-23 Sparta, Inc. Image comparison system
US4783838A (en) * 1984-12-26 1988-11-08 Konishiroku Photo Industry Co., Ltd. Image processing method and apparatus therefor
US4754489A (en) * 1985-10-15 1988-06-28 The Palantir Corporation Means for resolving ambiguities in text based upon character context
US4817176A (en) * 1986-02-14 1989-03-28 William F. McWhortor Method and apparatus for pattern recognition
US4799270A (en) * 1986-03-20 1989-01-17 The Johns Hopkins University Image classifier
US5224179A (en) * 1988-12-20 1993-06-29 At&T Bell Laboratories Image skeletonization method
US5271068A (en) * 1990-03-15 1993-12-14 Sharp Kabushiki Kaisha Character recognition device which divides a single character region into subregions to obtain a character code

Also Published As

Publication number Publication date
JPH07152867A (ja) 1995-06-16
EP0649113A2 (de) 1995-04-19
EP0649113B1 (de) 2000-12-27
JP3618796B2 (ja) 2005-02-09
DE69426479T2 (de) 2001-06-07
US5539840A (en) 1996-07-23
EP0649113A3 (de) 1995-12-13

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