DE69417822D1 - Verbesserung der Qualität eines empfangenen Faksimilebildes - Google Patents

Verbesserung der Qualität eines empfangenen Faksimilebildes

Info

Publication number
DE69417822D1
DE69417822D1 DE69417822T DE69417822T DE69417822D1 DE 69417822 D1 DE69417822 D1 DE 69417822D1 DE 69417822 T DE69417822 T DE 69417822T DE 69417822 T DE69417822 T DE 69417822T DE 69417822 D1 DE69417822 D1 DE 69417822D1
Authority
DE
Germany
Prior art keywords
quality
improve
facsimile image
received facsimile
received
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 - Fee Related
Application number
DE69417822T
Other languages
English (en)
Other versions
DE69417822T2 (de
Inventor
Gary Scott Overall
Philip Byron Wright
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.)
Lexmark International Inc
Original Assignee
Lexmark International 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 Lexmark International Inc filed Critical Lexmark International Inc
Application granted granted Critical
Publication of DE69417822D1 publication Critical patent/DE69417822D1/de
Publication of DE69417822T2 publication Critical patent/DE69417822T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H04N1/40—Picture signal circuits
    • H04N1/409—Edge or detail enhancement; Noise or error suppression

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image Processing (AREA)
  • Editing Of Facsimile Originals (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
DE69417822T 1993-08-23 1994-07-27 Verbesserung der Qualität eines empfangenen Faksimilebildes Expired - Fee Related DE69417822T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/110,190 US5940190A (en) 1993-08-23 1993-08-23 Image improvement after facsimile reception

Publications (2)

Publication Number Publication Date
DE69417822D1 true DE69417822D1 (de) 1999-05-20
DE69417822T2 DE69417822T2 (de) 1999-11-11

Family

ID=22331689

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69417822T Expired - Fee Related DE69417822T2 (de) 1993-08-23 1994-07-27 Verbesserung der Qualität eines empfangenen Faksimilebildes

Country Status (4)

Country Link
US (1) US5940190A (de)
EP (1) EP0641119B1 (de)
JP (1) JP3472788B2 (de)
DE (1) DE69417822T2 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7382929B2 (en) 1989-05-22 2008-06-03 Pixel Instruments Corporation Spatial scan replication circuit

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4229768A (en) * 1978-03-30 1980-10-21 Canon Kabushiki Kaisha Information processing apparatus
US4450483A (en) * 1981-09-02 1984-05-22 Westinghouse Electric Corp. Circuit for improving the quality of digitized line images
US4437122A (en) * 1981-09-12 1984-03-13 Xerox Corporation Low resolution raster images
JPS5875192A (ja) * 1981-10-29 1983-05-06 日本電信電話株式会社 表示装置のスム−ジング回路
US4517604A (en) * 1983-04-04 1985-05-14 International Business Machines Corporation Method for reducing line width variations in bilevel video images
US4646355A (en) * 1985-03-15 1987-02-24 Tektronix, Inc. Method and apparatus for input picture enhancement by removal of undersired dots and voids
US4780711A (en) * 1985-04-12 1988-10-25 International Business Machines Corporation Anti-aliasing of raster images using assumed boundary lines
US4918523A (en) * 1987-10-05 1990-04-17 Intel Corporation Digital video formatting and transmission system and method
US4791679A (en) * 1987-12-26 1988-12-13 Eastman Kodak Company Image character enhancement using a stroke strengthening kernal
US5151794A (en) * 1989-01-30 1992-09-29 Ezel Inc. Image processing method
JPH02250464A (ja) * 1989-03-24 1990-10-08 Sharp Corp ファクシミリ装置
JP2813196B2 (ja) * 1989-04-12 1998-10-22 株式会社リコー 画像処理装置
US4975785A (en) * 1989-08-04 1990-12-04 International Business Machines Corporation Pel resolution addressing conversion
US5153748A (en) * 1989-09-28 1992-10-06 Eastman Kodak Company Detection of gaps in scanned images
JPH04189564A (ja) * 1990-11-26 1992-07-08 Canon Inc 出力方法
US5250934A (en) * 1990-12-31 1993-10-05 Xerox Corporation Method and apparatus for thinning printed images
DE69226103T2 (de) * 1991-02-22 1998-11-19 Canon Kk System zur Bildbearbeitung

Also Published As

Publication number Publication date
DE69417822T2 (de) 1999-11-11
EP0641119B1 (de) 1999-04-14
EP0641119A1 (de) 1995-03-01
US5940190A (en) 1999-08-17
JPH0787336A (ja) 1995-03-31
JP3472788B2 (ja) 2003-12-02

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee