DE3680808D1 - Verfahren zur verstaerkung der schaerfe in einer maschine zur wiedergabe eines bildsignals. - Google Patents

Verfahren zur verstaerkung der schaerfe in einer maschine zur wiedergabe eines bildsignals.

Info

Publication number
DE3680808D1
DE3680808D1 DE8686101455T DE3680808T DE3680808D1 DE 3680808 D1 DE3680808 D1 DE 3680808D1 DE 8686101455 T DE8686101455 T DE 8686101455T DE 3680808 T DE3680808 T DE 3680808T DE 3680808 D1 DE3680808 D1 DE 3680808D1
Authority
DE
Germany
Prior art keywords
machine
image signal
playing back
enhancing sharpness
sharpness
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
DE8686101455T
Other languages
English (en)
Inventor
Kunio Tomohisa
Kopo Morita Cho
Yasuo Kurusu
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.)
Dainippon Screen Manufacturing Co Ltd
Original Assignee
Dainippon Screen Manufacturing Co Ltd
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 Dainippon Screen Manufacturing Co Ltd filed Critical Dainippon Screen Manufacturing Co Ltd
Application granted granted Critical
Publication of DE3680808D1 publication Critical patent/DE3680808D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H04N1/4092—Edge or detail enhancement

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
DE8686101455T 1985-04-05 1986-02-05 Verfahren zur verstaerkung der schaerfe in einer maschine zur wiedergabe eines bildsignals. Expired - Lifetime DE3680808D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60071132A JPS61230571A (ja) 1985-04-05 1985-04-05 画像走査装置

Publications (1)

Publication Number Publication Date
DE3680808D1 true DE3680808D1 (de) 1991-09-19

Family

ID=13451741

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686101455T Expired - Lifetime DE3680808D1 (de) 1985-04-05 1986-02-05 Verfahren zur verstaerkung der schaerfe in einer maschine zur wiedergabe eines bildsignals.

Country Status (4)

Country Link
US (1) US4672463A (de)
EP (1) EP0198161B1 (de)
JP (1) JPS61230571A (de)
DE (1) DE3680808D1 (de)

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4817180A (en) * 1984-11-10 1989-03-28 Dainippon Screen Mfg. Co., Ltd. Image signal filtering
GB2183118B (en) * 1985-11-19 1989-10-04 Sony Corp Image signal processing
JPH06101787B2 (ja) * 1986-04-30 1994-12-12 株式会社リコー 画像デ−タの変倍処理装置
US4937662A (en) * 1987-01-27 1990-06-26 Konica Corporation Color image processing device having ability to process and record an outside or inside region enclosed with a color marker
US5081691A (en) * 1987-01-27 1992-01-14 Chesley Duncan M Filtering techniques
US4860118A (en) * 1987-02-25 1989-08-22 Canon Kabushiki Kaisha Image signal processing apparatus with edge emphasis and variable magnification
JP2592825B2 (ja) * 1987-02-25 1997-03-19 キヤノン株式会社 画信号処理装置
US4782389A (en) * 1987-04-30 1988-11-01 Rca Licensing Corporation Adaptive M-tile sample producer
US4829380A (en) * 1987-12-09 1989-05-09 General Motors Corporation Video processor
US4849679A (en) * 1987-12-31 1989-07-18 Westinghouse Electric Corp. Image processing system for an optical seam tracker
US4969203A (en) * 1988-01-25 1990-11-06 North American Philips Corporation Multiplicative sieve signal processing
JP2727549B2 (ja) * 1988-01-29 1998-03-11 日本電気株式会社 最適画質選択装置
US4941190A (en) * 1988-07-15 1990-07-10 Minnesota Mining And Manufacturing Company Method and system for enhancement of a digitized image
JPH0690724B2 (ja) * 1988-07-29 1994-11-14 大日本スクリーン製造株式会社 画像の輪郭強調方法
EP0359463B1 (de) * 1988-09-08 1997-04-16 Canon Kabushiki Kaisha Punktbilddatenausgabegerät
US5162925A (en) * 1988-11-17 1992-11-10 Canon Kabushiki Kaisha Color image processor capable of performing masking using a reduced number of bits
US5045952A (en) * 1989-08-21 1991-09-03 Xerox Corporation Method for edge enhanced error diffusion
JP2993014B2 (ja) * 1989-08-30 1999-12-20 富士ゼロックス株式会社 画像処理装置の画質制御方式
EP0416886B1 (de) * 1989-09-06 1995-04-19 Canon Kabushiki Kaisha Bildaufzeichnungsgerät
JP3099354B2 (ja) * 1989-12-29 2000-10-16 松下電器産業株式会社 画像処理装置及びこの装置を用いたディジタルカラー複写機
US5485534A (en) * 1990-03-28 1996-01-16 Fuji Photo Film Co., Ltd. Method and apparatus for emphasizing sharpness of image by detecting the edge portions of the image
JP3003799B2 (ja) * 1990-03-28 2000-01-31 富士写真フイルム株式会社 画像の鮮鋭度強調方法及びその装置
JP2574923B2 (ja) * 1990-04-10 1997-01-22 大日本スクリーン製造株式会社 輪郭強調方法および画像処理装置
US5251270A (en) * 1990-08-30 1993-10-05 Fuji Xerox Co., Ltd. Matrix calculating circuit
JPH0630245A (ja) * 1992-05-23 1994-02-04 Takayama:Kk 画像処理装置
US5325211A (en) * 1993-01-04 1994-06-28 Xerox Corporation Error diffusion with output and input based feedback
US5621546A (en) * 1993-11-02 1997-04-15 Xerox Corporation Method and apparatus for vector error diffusion with output color control
JPH08204971A (ja) * 1994-10-31 1996-08-09 Xerox Corp 予測符号化と誤差拡散を用いた画像圧縮方法
US5493416A (en) * 1994-10-31 1996-02-20 Xerox Corporation Method combining error diffusion and traditional halftoning with arbitrary screen orientation
JP3399684B2 (ja) * 1995-03-06 2003-04-21 富士写真フイルム株式会社 画像処理方法および装置
JP3013746B2 (ja) * 1995-04-26 2000-02-28 日本電気株式会社 デジタル輪郭補償装置
JPH09261481A (ja) * 1996-03-22 1997-10-03 Toshiba Corp 画像形成装置
US5668638A (en) * 1996-06-27 1997-09-16 Xerox Corporation Error diffusion method with symmetric enhancement
US6115078A (en) * 1996-09-10 2000-09-05 Dainippon Screen Mfg. Co., Ltd. Image sharpness processing method and apparatus, and a storage medium storing a program
DE69835931T2 (de) * 1997-11-17 2007-01-04 Xerox Corp. Unschärfenmaskierung für Entwurfsmoduswiedergabe von digitalen Bildern
EP0917347A3 (de) * 1997-11-17 2000-12-13 Xerox Corporation Dynamisch einstellbare Unschärfenmaskierung für digitale Bildverarbeitung
EP1330786A4 (de) * 2000-09-20 2008-08-27 Nik Software Inc Digitales bildverschärfungssystem
US7356190B2 (en) 2002-07-02 2008-04-08 Canon Kabushiki Kaisha Image area extraction method, image reconstruction method using the extraction result and apparatus thereof
US7373011B2 (en) 2004-10-07 2008-05-13 Polaroid Corporation Density-dependent sharpening
JP4677376B2 (ja) * 2006-07-07 2011-04-27 キヤノン株式会社 画像処理装置、画像処理方法、画像処理プログラム及び記憶媒体
JP2011097258A (ja) * 2009-10-28 2011-05-12 Kyocera Mita Corp 画像処理装置、画像処理方法及び画像形成装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55146451A (en) * 1979-05-02 1980-11-14 Dainippon Screen Mfg Co Ltd Sharpness emphasis method in image scanning recorder
JPS568140A (en) * 1979-07-02 1981-01-27 Dainippon Screen Mfg Co Ltd Emphasizing method of sharpness in image scanning and recording apparatus
US4589034A (en) * 1980-12-05 1986-05-13 Canon Kabushiki Kaisha Image processing apparatus
DE3139483C2 (de) * 1981-10-03 1985-06-13 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel Verfahren und Schaltungsanordnung zur Kontraststeigerung
US4517607A (en) * 1981-11-09 1985-05-14 Ricoh Company, Ltd. Method of and apparatus for compensating image in image reproduction system
JPS5977771A (ja) * 1982-10-26 1984-05-04 Matsushita Electric Ind Co Ltd 画像信号処理装置
NL8320205A (nl) * 1983-06-03 1985-05-01 Gravure Res Inst Rastergravure-graveersysteem voor elektromechanische graveerinrichtingen.

Also Published As

Publication number Publication date
EP0198161B1 (de) 1991-08-14
EP0198161A1 (de) 1986-10-22
US4672463A (en) 1987-06-09
JPH0464231B2 (de) 1992-10-14
JPS61230571A (ja) 1986-10-14

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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