DE69226338T2 - Bilderkennungsverfahren mit Verwendung endlicher Automatennetze - Google Patents

Bilderkennungsverfahren mit Verwendung endlicher Automatennetze

Info

Publication number
DE69226338T2
DE69226338T2 DE69226338T DE69226338T DE69226338T2 DE 69226338 T2 DE69226338 T2 DE 69226338T2 DE 69226338 T DE69226338 T DE 69226338T DE 69226338 T DE69226338 T DE 69226338T DE 69226338 T2 DE69226338 T2 DE 69226338T2
Authority
DE
Germany
Prior art keywords
image
character
decoder
characters
node
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
DE69226338T
Other languages
German (de)
English (en)
Other versions
DE69226338D1 (de
Inventor
Philip Andrew Menlo Park California 94025 Chou
Gary Edward Belmont California 94002 Kopec
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.)
Xerox Corp
Original Assignee
Xerox 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 Xerox Corp filed Critical Xerox Corp
Application granted granted Critical
Publication of DE69226338D1 publication Critical patent/DE69226338D1/de
Publication of DE69226338T2 publication Critical patent/DE69226338T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G06V30/40—Document-oriented image-based pattern recognition
    • G06V30/41—Analysis of document content
    • G06V30/414—Extracting the geometrical structure, e.g. layout tree; Block segmentation, e.g. bounding boxes for graphics or text
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F18/00—Pattern recognition
    • G06F18/20—Analysing
    • G06F18/29—Graphical models, e.g. Bayesian networks
    • G06F18/295—Markov models or related models, e.g. semi-Markov models; Markov random fields; Networks embedding Markov models
    • 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
    • G06V30/14—Image acquisition
    • G06V30/148—Segmentation of character regions
    • 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
    • G06V30/19—Recognition using electronic means
    • G06V30/191—Design or setup of recognition systems or techniques; Extraction of features in feature space; Clustering techniques; Blind source separation
    • G06V30/19187—Graphical models, e.g. Bayesian networks or Markov models
    • 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)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Artificial Intelligence (AREA)
  • Data Mining & Analysis (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Computer Graphics (AREA)
  • Software Systems (AREA)
  • Bioinformatics & Computational Biology (AREA)
  • Evolutionary Biology (AREA)
  • Evolutionary Computation (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geometry (AREA)
  • Character Discrimination (AREA)
  • Processing Or Creating Images (AREA)
  • Image Processing (AREA)
  • Image Generation (AREA)
  • Image Analysis (AREA)
DE69226338T 1991-12-10 1992-12-10 Bilderkennungsverfahren mit Verwendung endlicher Automatennetze Expired - Lifetime DE69226338T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/805,700 US5321773A (en) 1991-12-10 1991-12-10 Image recognition method using finite state networks

Publications (2)

Publication Number Publication Date
DE69226338D1 DE69226338D1 (de) 1998-08-27
DE69226338T2 true DE69226338T2 (de) 1999-01-28

Family

ID=25192281

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69226338T Expired - Lifetime DE69226338T2 (de) 1991-12-10 1992-12-10 Bilderkennungsverfahren mit Verwendung endlicher Automatennetze

Country Status (4)

Country Link
US (1) US5321773A (enExample)
EP (1) EP0546843B1 (enExample)
JP (1) JP3447762B2 (enExample)
DE (1) DE69226338T2 (enExample)

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JP3572632B2 (ja) * 1993-06-29 2004-10-06 ソニー株式会社 異常検出装置
JP2673871B2 (ja) * 1993-08-26 1997-11-05 日本アイ・ビー・エム株式会社 ニューラル・ネットワークによるパターン認識方法及び装置
US5768426A (en) 1993-11-18 1998-06-16 Digimarc Corporation Graphics processing system employing embedded code signals
US6983051B1 (en) 1993-11-18 2006-01-03 Digimarc Corporation Methods for audio watermarking and decoding
US6345104B1 (en) 1994-03-17 2002-02-05 Digimarc Corporation Digital watermarks and methods for security documents
US6449377B1 (en) 1995-05-08 2002-09-10 Digimarc Corporation Methods and systems for watermark processing of line art images
US5748763A (en) 1993-11-18 1998-05-05 Digimarc Corporation Image steganography system featuring perceptually adaptive and globally scalable signal embedding
US6064819A (en) * 1993-12-08 2000-05-16 Imec Control flow and memory management optimization
JPH07168913A (ja) * 1993-12-14 1995-07-04 Chugoku Nippon Denki Software Kk 文字認識システム
EP0694862A3 (en) * 1994-07-22 1996-07-24 At & T Corp Detection of degraded, grayscale documents using two-dimensional hidden pseudo-Markov models and N-best hypotheses
WO1996017310A1 (en) * 1994-11-29 1996-06-06 Avalanche Development Company System and process for creating structured documents
EP0723247B1 (en) 1995-01-17 1998-07-29 Eastman Kodak Company Document image assessment system and method
US5982926A (en) * 1995-01-17 1999-11-09 At & T Ipm Corp. Real-time image enhancement techniques
EP0735420B1 (en) * 1995-03-29 2003-07-16 Eastman Kodak Company Apparatus for printing, storing and retrieving an image record
US5689620A (en) * 1995-04-28 1997-11-18 Xerox Corporation Automatic training of character templates using a transcription and a two-dimensional image source model
US5594809A (en) * 1995-04-28 1997-01-14 Xerox Corporation Automatic training of character templates using a text line image, a text line transcription and a line image source model
US5706364A (en) * 1995-04-28 1998-01-06 Xerox Corporation Method of producing character templates using unsegmented samples
US5956419A (en) * 1995-04-28 1999-09-21 Xerox Corporation Unsupervised training of character templates using unsegmented samples
US5883986A (en) * 1995-06-02 1999-03-16 Xerox Corporation Method and system for automatic transcription correction
US5748860A (en) * 1995-06-06 1998-05-05 R.R. Donnelley & Sons Company Image processing during page description language interpretation
US6571013B1 (en) * 1996-06-11 2003-05-27 Lockhead Martin Mission Systems Automatic method for developing custom ICR engines
DE69712676T2 (de) * 1996-07-08 2003-01-02 Hyundai Curitel, Inc. Verfahren zur Videokodierung
US6003002A (en) * 1997-01-02 1999-12-14 Texas Instruments Incorporated Method and system of adapting speech recognition models to speaker environment
JP3069058B2 (ja) * 1997-04-07 2000-07-24 株式会社エイ・ティ・アール人間情報通信研究所 ニューロセルラオートマトンおよび最適化装置
US6111985A (en) 1997-06-06 2000-08-29 Microsoft Corporation Method and mechanism for providing partial results in full context handwriting recognition
US6687404B1 (en) 1997-06-20 2004-02-03 Xerox Corporation Automatic training of layout parameters in a 2D image model
US6741743B2 (en) * 1998-07-31 2004-05-25 Prc. Inc. Imaged document optical correlation and conversion system
JP3695217B2 (ja) * 1999-04-30 2005-09-14 オムロン株式会社 画像処理装置及び画像入力装置
US6738526B1 (en) * 1999-07-30 2004-05-18 Microsoft Corporation Method and apparatus for filtering and caching data representing images
JP2001291060A (ja) * 2000-04-04 2001-10-19 Toshiba Corp 単語列照合装置および単語列照合方法
US6738518B1 (en) 2000-05-12 2004-05-18 Xerox Corporation Document image decoding using text line column-based heuristic scoring
US6594393B1 (en) 2000-05-12 2003-07-15 Thomas P. Minka Dynamic programming operation with skip mode for text line image decoding
US6678415B1 (en) * 2000-05-12 2004-01-13 Xerox Corporation Document image decoding using an integrated stochastic language model
US6862113B1 (en) 2000-05-19 2005-03-01 Xerox Corporation Assist channel coding with character classifications
US7110621B1 (en) 2000-05-19 2006-09-19 Xerox Corporation Assist channel coding using a rewrite model
US6768560B1 (en) 2000-05-19 2004-07-27 Xerox Corporation Assist channel coding with vertical block error correction
US6628837B1 (en) 2000-05-19 2003-09-30 Xerox Corporation Assist channel coding with convolution coding
US7046848B1 (en) 2001-08-22 2006-05-16 Olcott Peter L Method and system for recognizing machine generated character glyphs and icons in graphic images
US7065740B2 (en) * 2001-08-24 2006-06-20 Microsoft Corporation System and method to automate the management of computer services and programmable devices
US7689037B2 (en) * 2004-10-22 2010-03-30 Xerox Corporation System and method for identifying and labeling fields of text associated with scanned business documents
US7492366B2 (en) * 2005-05-13 2009-02-17 Microsoft Corporation Method and system of character placement in opentype fonts
DE602005002835T2 (de) * 2005-06-09 2008-02-07 Pdflib Gmbh Verfahren zur Identifizierung von redundantem Text in elektronischen Dokumenten
US8020091B2 (en) * 2005-07-15 2011-09-13 Microsoft Corporation Alignment and breaking of mathematical expressions in documents
US7454063B1 (en) * 2005-09-22 2008-11-18 The United States Of America As Represented By The Director National Security Agency Method of optical character recognition using feature recognition and baseline estimation
US7945101B2 (en) * 2007-07-26 2011-05-17 Palo Alto Research Center Incorporated Innovative OCR systems and methods that combine a template based generative model with a discriminative model
JP5557419B2 (ja) * 2007-10-17 2014-07-23 スパンション エルエルシー 半導体装置
US7991153B1 (en) 2008-08-26 2011-08-02 Nanoglyph, LLC Glyph encryption system and related methods
CN102402693B (zh) * 2010-09-09 2014-07-30 富士通株式会社 处理包含字符的图像的方法和设备
US9684842B2 (en) 2015-10-29 2017-06-20 The Nielsen Company (Us), Llc Methods and apparatus to extract text from imaged documents
CN111783533B (zh) * 2020-05-28 2023-10-24 宁波大学 一种基于粒子群算法的离子淌度重叠信号峰分离方法
CN116452696B (zh) * 2023-06-16 2023-08-29 山东省计算中心（国家超级计算济南中心） 一种基于双域特征采样的图像压缩感知重构方法及系统
CN116503880B (zh) * 2023-06-29 2023-10-31 武汉纺织大学 一种倾斜字体的英文字符识别方法和系统

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5020112A (en) * 1989-10-31 1991-05-28 At&T Bell Laboratories Image recognition method using two-dimensional stochastic grammars

Also Published As

Publication number Publication date
EP0546843B1 (en) 1998-07-22
US5321773A (en) 1994-06-14
EP0546843A2 (en) 1993-06-16
DE69226338D1 (de) 1998-08-27
JP3447762B2 (ja) 2003-09-16
EP0546843A3 (enExample) 1994-04-20
JPH05303618A (ja) 1993-11-16

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