JPH0453476B2 - - Google Patents

Info

Publication number
JPH0453476B2
JPH0453476B2 JP62132010A JP13201087A JPH0453476B2 JP H0453476 B2 JPH0453476 B2 JP H0453476B2 JP 62132010 A JP62132010 A JP 62132010A JP 13201087 A JP13201087 A JP 13201087A JP H0453476 B2 JPH0453476 B2 JP H0453476B2
Authority
JP
Japan
Prior art keywords
symbol
prototype
symbols
sij
facsimile
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
JP62132010A
Other languages
English (en)
Japanese (ja)
Other versions
JPS63108869A (ja
Inventor
Jooji Keeshii Richaado
Kooneriasu Kingu Jeemuzu
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 JPS63108869A publication Critical patent/JPS63108869A/ja
Publication of JPH0453476B2 publication Critical patent/JPH0453476B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/41—Bandwidth or redundancy reduction
    • H04N1/411—Bandwidth or redundancy reduction for the transmission or storage or reproduction of two-tone pictures, e.g. black and white pictures
    • H04N1/4115—Bandwidth or redundancy reduction for the transmission or storage or reproduction of two-tone pictures, e.g. black and white pictures involving the recognition of specific patterns, e.g. by symbol matching

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image Processing (AREA)
  • Character Input (AREA)
  • Character Discrimination (AREA)
  • Editing Of Facsimile Originals (AREA)
  • Facsimiles In General (AREA)
  • Facsimile Transmission Control (AREA)
JP62132010A 1986-10-17 1987-05-29 ファクシミリ伝送システムの送信デ−タの減少方法 Granted JPS63108869A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US920489 1986-10-17
US06/920,489 US4769716A (en) 1986-10-17 1986-10-17 Facsimile transmission using enhanced symbol prototypes with precalculated front and back white spaces

Publications (2)

Publication Number Publication Date
JPS63108869A JPS63108869A (ja) 1988-05-13
JPH0453476B2 true JPH0453476B2 (cg-RX-API-DMAC7.html) 1992-08-26

Family

ID=25443835

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62132010A Granted JPS63108869A (ja) 1986-10-17 1987-05-29 ファクシミリ伝送システムの送信デ−タの減少方法

Country Status (4)

Country Link
US (1) US4769716A (cg-RX-API-DMAC7.html)
EP (1) EP0263950B1 (cg-RX-API-DMAC7.html)
JP (1) JPS63108869A (cg-RX-API-DMAC7.html)
DE (1) DE3787865T2 (cg-RX-API-DMAC7.html)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5640607A (en) * 1992-04-21 1997-06-17 Microsoft Corporation Method for sending bit mapped image by appending special code to text string and transmitting the text string separately from compressed residual image
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
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
US5883986A (en) * 1995-06-02 1999-03-16 Xerox Corporation Method and system for automatic transcription correction
JP3061765B2 (ja) 1996-05-23 2000-07-10 ゼロックス コーポレイション コンピュータベースの文書処理方法
US5884014A (en) * 1996-05-23 1999-03-16 Xerox Corporation Fontless structured document image representations for efficient rendering
US5835638A (en) * 1996-05-30 1998-11-10 Xerox Corporation Method and apparatus for comparing symbols extracted from binary images of text using topology preserved dilated representations of the symbols
US7519221B1 (en) 2005-02-28 2009-04-14 Adobe Systems Incorporated Reconstructing high-fidelity electronic documents from images via generation of synthetic fonts
US7702182B2 (en) * 2006-02-16 2010-04-20 Adobe Systems, Incorporated Method and apparatus for creating a high-fidelity glyph prototype from low-resolution glyph images
US7697758B2 (en) * 2006-09-11 2010-04-13 Google Inc. Shape clustering and cluster-level manual identification in post optical character recognition processing
US7646921B2 (en) * 2006-09-11 2010-01-12 Google Inc. High resolution replication of document based on shape clustering
US8175394B2 (en) * 2006-09-08 2012-05-08 Google Inc. Shape clustering in post optical character recognition processing
US7650035B2 (en) * 2006-09-11 2010-01-19 Google Inc. Optical character recognition based on shape clustering and multiple optical character recognition processes

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54116121A (en) * 1978-03-01 1979-09-10 Fujitsu Ltd Production system of character train
JPS56100565A (en) * 1980-01-16 1981-08-12 Toshiba Corp Facsimile device
US4463386A (en) * 1982-05-03 1984-07-31 International Business Machines Corporation Facsimile data reduction
US4499596A (en) * 1982-06-28 1985-02-12 International Business Machines Corporation Adaptive facsimile compression using a dynamic extendable decision network
US4494150A (en) * 1982-07-13 1985-01-15 International Business Machines Corporation Word autocorrelation redundancy match facsimile compression for text processing systems
US4499499A (en) * 1982-12-29 1985-02-12 International Business Machines Corporation Method for identification and compression of facsimile symbols in text processing systems
JPS60254871A (ja) * 1984-05-31 1985-12-16 Kokusai Denshin Denwa Co Ltd <Kdd> フアクシミリ画像の符号化方法

Also Published As

Publication number Publication date
EP0263950A3 (en) 1991-03-20
EP0263950A2 (en) 1988-04-20
JPS63108869A (ja) 1988-05-13
US4769716A (en) 1988-09-06
DE3787865D1 (de) 1993-11-25
EP0263950B1 (en) 1993-10-20
DE3787865T2 (de) 1994-05-05

Similar Documents

Publication Publication Date Title
JPH0453476B2 (cg-RX-API-DMAC7.html)
JP2940496B2 (ja) パタンマッチング符号化装置及び方法
US7907783B2 (en) Apparatus and method of matching symbols in a text image coding and decoding system
US6351546B1 (en) Image processing method and image processing device
US8719578B2 (en) Document verifying apparatus, document verifying method, and computer product
EP0592238A2 (en) Certifiable optical character recognition
JPS6118381B2 (cg-RX-API-DMAC7.html)
GB1584096A (en) Optical character recognition system
US4105997A (en) Method for achieving accurate optical character reading of printed text
CN111630521A (zh) 图像处理方法和图像处理系统
US20190369929A1 (en) Print control device, page data correction method, and raster data generation method
JP2022090947A (ja) 画像処理装置、画像処理方法およびプログラム
US7936897B2 (en) Image forming apparatus
JP4532331B2 (ja) 情報埋め込み装置、情報抽出装置、情報埋め込み方法、情報抽出方法、情報埋め込みプログラム、及び情報抽出プログラム
US4593278A (en) Real time graphic processor
US7505180B2 (en) Optical character recognition using digital information from encoded text embedded in the document
US8314955B2 (en) Apparatus and method for requesting password re-entry for external-device display and not requesting password re-entry for image display on display unit of the apparatus
JP4807401B2 (ja) 画像処理装置、画像形成装置およびプログラム
JP3842914B2 (ja) データ符号化方法／復号方法、データ符号化装置／復号装置、及び、そのデータ符号化方法／復号方法を用いた画像データ記録システム
JPH0333990A (ja) マスク処理を用いる光学式文字認識装置及び方法
JP3781324B2 (ja) 画像位置合わせ方法、ファックス文字認識方法および記録媒体
EP1544791A2 (en) Method and system for estimating the robustness of algorithms for generating characterizing information descriptive of a selected text block
JPH07184069A (ja) 機密文書管理装置
Capitant et al. The application of optical character recognition techniques to bandwidth compression of facsimile data
US10440236B2 (en) Multi-object color caching mechanism