DE69410191D1 - Auf Übergangspegeldaten basierte OCR-Klassifikation - Google Patents

Auf Übergangspegeldaten basierte OCR-Klassifikation

Info

Publication number
DE69410191D1
DE69410191D1 DE69410191T DE69410191T DE69410191D1 DE 69410191 D1 DE69410191 D1 DE 69410191D1 DE 69410191 T DE69410191 T DE 69410191T DE 69410191 T DE69410191 T DE 69410191T DE 69410191 D1 DE69410191 D1 DE 69410191D1
Authority
DE
Germany
Prior art keywords
level data
classification based
transition level
ocr classification
ocr
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
DE69410191T
Other languages
English (en)
Other versions
DE69410191T2 (de
Inventor
Roger D Melen
Hadar Avi-Itzhak
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
Application granted granted Critical
Publication of DE69410191D1 publication Critical patent/DE69410191D1/de
Publication of DE69410191T2 publication Critical patent/DE69410191T2/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
    • G06V30/19—Recognition using electronic means
    • 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
DE69410191T 1993-08-26 1994-08-25 Auf Übergangspegeldaten basierte OCR-Klassifikation Expired - Lifetime DE69410191T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11213393A 1993-08-26 1993-08-26

Publications (2)

Publication Number Publication Date
DE69410191D1 true DE69410191D1 (de) 1998-06-18
DE69410191T2 DE69410191T2 (de) 1998-09-24

Family

ID=22342278

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69410191T Expired - Lifetime DE69410191T2 (de) 1993-08-26 1994-08-25 Auf Übergangspegeldaten basierte OCR-Klassifikation

Country Status (4)

Country Link
US (1) US5781659A (de)
EP (1) EP0640934B1 (de)
JP (1) JP3554033B2 (de)
DE (1) DE69410191T2 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6636635B2 (en) 1995-11-01 2003-10-21 Canon Kabushiki Kaisha Object extraction method, and image sensing apparatus using the method
EP0777375A3 (de) * 1995-12-05 1998-10-14 Canon Kabushiki Kaisha Verfahren und Vorrichtung zur Verteilung von Aufzeichnungsdaten über ein Netzwerk unter Verwendung von auf einem Übertragungsblatt handgeschriebenen Übertragungszeichen
US5719960A (en) * 1996-06-26 1998-02-17 Canon Kabushiki Kaisha System for dispatching task orders into a user network and method
US6081621A (en) * 1996-10-01 2000-06-27 Canon Kabushiki Kaisha Positioning templates in optical character recognition systems
WO2001009736A1 (en) * 1999-07-30 2001-02-08 Microsoft Corporation Adjusting character dimensions to compensate for low contrast character features
US6738526B1 (en) * 1999-07-30 2004-05-18 Microsoft Corporation Method and apparatus for filtering and caching data representing images
US6750986B1 (en) 2000-03-27 2004-06-15 Destiny Technology Corporation Color image processing method with thin-line detection and enhancement
US6778296B1 (en) 2000-03-27 2004-08-17 Destiny Technology Corporation Color imaging processing method with boundary detection and enhancement
IL162878A0 (en) * 2004-07-06 2005-11-20 Hi Tech Solutions Ltd Multi-level neural network based characters identification method and system
CN100354876C (zh) * 2005-04-13 2007-12-12 佳能株式会社 增强字符行图像的方法和设备
KR20150003573A (ko) * 2013-07-01 2015-01-09 한국전자통신연구원 영상 패턴 검출 방법 및 그 장치
US11800056B2 (en) 2021-02-11 2023-10-24 Logitech Europe S.A. Smart webcam system
US11800048B2 (en) 2021-02-24 2023-10-24 Logitech Europe S.A. Image generating system with background replacement or modification capabilities

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55157799A (en) * 1979-05-29 1980-12-08 Nippon Electric Co High efficiency pattern matching unit
JPS59790A (ja) * 1982-06-28 1984-01-05 Fuji Electric Co Ltd パタ−ン識別装置
US4672678A (en) * 1984-06-25 1987-06-09 Fujitsu Limited Pattern recognition apparatus
GB2173026B (en) * 1985-03-25 1988-07-13 Mcdonald Richard Albert Real time video pattern recognition
JPH0821065B2 (ja) * 1989-03-13 1996-03-04 シャープ株式会社 文字認識装置
JP2940933B2 (ja) * 1989-05-20 1999-08-25 株式会社リコー パターン認識方式
EP0463242B1 (de) * 1990-06-29 1996-09-04 Koninklijke Philips Electronics N.V. Verfahren zur Musterdatenverarbeitung auf der Grundlage geordneter Amplitudenwerte, Gerät zum Durchführen des Verfahrens
US5212741A (en) * 1992-01-21 1993-05-18 Eastman Kodak Company Preprocessing of dot-matrix/ink-jet printed text for Optical Character Recognition

Also Published As

Publication number Publication date
JPH07192092A (ja) 1995-07-28
EP0640934A3 (de) 1995-10-04
EP0640934A2 (de) 1995-03-01
US5781659A (en) 1998-07-14
DE69410191T2 (de) 1998-09-24
EP0640934B1 (de) 1998-05-13
JP3554033B2 (ja) 2004-08-11

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition