FR2461414B1 - Procede d'accentuation de la nettete d'une image de reproduction - Google Patents

Procede d'accentuation de la nettete d'une image de reproduction

Info

Publication number
FR2461414B1
FR2461414B1 FR8014715A FR8014715A FR2461414B1 FR 2461414 B1 FR2461414 B1 FR 2461414B1 FR 8014715 A FR8014715 A FR 8014715A FR 8014715 A FR8014715 A FR 8014715A FR 2461414 B1 FR2461414 B1 FR 2461414B1
Authority
FR
France
Prior art keywords
sharpening
sharpness
reproduction image
reproduction
image
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
Application number
FR8014715A
Other languages
English (en)
Other versions
FR2461414A1 (fr
Inventor
Mitsuhiko Yamada
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
Publication of FR2461414A1 publication Critical patent/FR2461414A1/fr
Application granted granted Critical
Publication of FR2461414B1 publication Critical patent/FR2461414B1/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/73—Deblurring; Sharpening
    • G06T5/75—Unsharp masking
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/20—Image enhancement or restoration using local operators
    • 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
    • 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
    • H04N1/46—Colour picture communication systems
    • H04N1/56—Processing of colour picture signals
    • H04N1/58—Edge or detail enhancement; Noise or error suppression, e.g. colour misregistration correction

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Image Processing (AREA)
  • Facsimiles In General (AREA)
  • Preparing Plates And Mask In Photomechanical Process (AREA)
FR8014715A 1979-07-02 1980-07-02 Procede d'accentuation de la nettete d'une image de reproduction Expired FR2461414B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8257179A JPS568140A (en) 1979-07-02 1979-07-02 Emphasizing method of sharpness in image scanning and recording apparatus

Publications (2)

Publication Number Publication Date
FR2461414A1 FR2461414A1 (fr) 1981-01-30
FR2461414B1 true FR2461414B1 (fr) 1986-02-28

Family

ID=13778164

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8014715A Expired FR2461414B1 (fr) 1979-07-02 1980-07-02 Procede d'accentuation de la nettete d'une image de reproduction

Country Status (5)

Country Link
US (1) US4319268A (fr)
JP (1) JPS568140A (fr)
DE (1) DE3024126C2 (fr)
FR (1) FR2461414B1 (fr)
GB (1) GB2057219B (fr)

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JPS58222383A (ja) * 1982-06-18 1983-12-24 Fujitsu Ltd 画像処理方式
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DE3236140A1 (de) * 1982-09-29 1984-03-29 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka Abtasteinrichtung mit veraenderbarer abtastdichte
US4517599A (en) * 1983-01-27 1985-05-14 Hughes Aircraft Company Resolution enhancement and zoom by degradation estimates
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JPS59149463A (ja) * 1983-02-15 1984-08-27 Dainippon Screen Mfg Co Ltd 画像信号の読取方法
DE3390498C2 (de) * 1983-06-03 1993-04-15 Hell Ag Linotype Verfahren zum Abtasten von Rastervorlagen zur Gewinnung von Signalen f}r die Tiefdruckgravur
JPS6086676A (ja) * 1983-10-18 1985-05-16 Nec Corp 画信号修正装置
GB8330869D0 (en) * 1983-11-18 1983-12-29 Centurfax Ltd Page make-up system
JPS60105674U (ja) * 1983-12-23 1985-07-18 東レ株式会社 混繊糸
US4622582A (en) * 1984-01-09 1986-11-11 Dainippon Screen Seizo Kabushiki Kaisha Asynchronous color image processing system with a plurality of picture input units and a plurality of picture reproducing units selected in accordance with a predetermined order of preference
JPS60132472U (ja) * 1984-02-09 1985-09-04 東レ株式会社 芯鞘構造複合紡績糸
JPS60169274A (ja) * 1984-02-10 1985-09-02 Dainippon Screen Mfg Co Ltd 画像走査記録装置に於ける輪郭強調信号処理方法
GB2160065B (en) * 1984-06-09 1988-11-09 Fuji Photo Film Co Ltd Method of processing an image signal
JP2677283B2 (ja) * 1984-06-14 1997-11-17 キヤノン株式会社 カラー画像処理装置
JPS6195669A (ja) * 1984-10-16 1986-05-14 Dainippon Screen Mfg Co Ltd 画像処理方法
JPS61102253A (ja) * 1984-10-26 1986-05-20 Dainippon Screen Mfg Co Ltd インキ供給量データファイル作成方法及びインキ供給量データ作成方法
US4817180A (en) * 1984-11-10 1989-03-28 Dainippon Screen Mfg. Co., Ltd. Image signal filtering
US4641184A (en) * 1984-12-14 1987-02-03 Polaroid Corporation Electronic image scanner and copier system with color matrix image enhancement
US4641185A (en) * 1984-12-18 1987-02-03 Polaroid Corporation Image sensing and processing apparatus and method
EP0191135B1 (fr) * 1985-02-09 1991-04-17 Dainippon Screen Mfg. Co., Ltd. Procédé et appareil pour la reproduction d'images séparées en couleurs par balayage
US4707743A (en) * 1985-02-19 1987-11-17 Canon Kabushiki Kaisha Method and apparatus for image conversion with multiple exposures for filtering
JPS61203785A (ja) * 1985-03-07 1986-09-09 Dainippon Screen Mfg Co Ltd ２値画像デ−タの平滑化処理方法及びその装置
US4652906A (en) * 1985-03-12 1987-03-24 Racal Data Communications Inc. Method and apparatus for color decomposition of video signals
JPS61230571A (ja) * 1985-04-05 1986-10-14 Dainippon Screen Mfg Co Ltd 画像走査装置
US5125041A (en) * 1985-08-05 1992-06-23 Canon Kabushiki Kaisha Still image processing method for blurring an image background and producing a visual flowing effect
US4689663A (en) * 1985-09-27 1987-08-25 Rca Corporation Television receiver with display driver amplifier and input video filter having inversely related bandwidths
GB8526817D0 (en) * 1985-10-31 1985-12-04 Crosfield Electronics Ltd Image enhancement
IT1183983B (it) * 1985-11-29 1987-10-22 Elsag Sistema di acquisizione ed elaborazione flessibile di immagini
US4684602A (en) * 1986-06-30 1987-08-04 Eastman Kodak Company Multicolor laser recording method and element
JPH01102841A (ja) * 1987-10-14 1989-04-20 Toshiba Corp 画像形成方法
JPH0614688B2 (ja) * 1987-12-09 1994-02-23 大日本スクリーン製造株式会社 色分解画像走査記録装置を使用するカラー原画の単色複製方法
US4972256A (en) * 1988-02-05 1990-11-20 Dainippon Screen Mfg. Co., Ltd. Method of enhancing image sharpness for image reproduction using sharp/unsharp signal processing
US4876602A (en) * 1988-05-02 1989-10-24 Hughes Aircraft Company Electronic focus correction by signal convolution
JP2620368B2 (ja) * 1989-04-18 1997-06-11 富士写真フイルム株式会社 画像信号処理方法およびその装置
CA2028092C (fr) * 1989-10-23 1996-08-06 Yuji Tanaka Appareil de traitement d'images binaires
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
JPH0482373A (ja) * 1990-07-25 1992-03-16 Dainippon Screen Mfg Co Ltd 画像走査読取装置
US5524162A (en) * 1991-07-22 1996-06-04 Levien; Raphael L. Method and apparatus for adaptive sharpening of images
DE4335215C2 (de) * 1992-10-29 1995-09-07 Hell Ag Linotype Verfahren und Einrichtung zur Farbwert-Bearbeitung
EP0617548B1 (fr) * 1993-03-24 2001-09-05 Fujifilm Electronic Imaging Limited Modification des couleurs d'images
US5559903A (en) * 1993-04-08 1996-09-24 Linotype Hell Ag Method for generating geometric masks with a digital color computer
DE4343362C2 (de) * 1993-04-08 1996-08-14 Linotype Hell Ag Werk Kiel Verfahren zur Erzeugung harmonischer Farbkorrekturen
JP3738080B2 (ja) * 1996-05-17 2006-01-25 富士写真フイルム株式会社 リニアイメージセンサの出力信号補正装置
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
DE69942619D1 (de) * 1998-11-25 2010-09-02 Iridian Technologies Inc Schnelles fokusbeurteilungssystem und -verfahren zur bilderfassung

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DE1039842B (de) * 1957-08-14 1958-09-25 Rudol Hell Dr Ing Verfahren zur kuenstlichen Kontraststeigerung an Tonwertspruengen und Konturen in mittels elektronischer Klischier-maschinen herzustellenden Klischees
NL278514A (fr) * 1961-05-16
US3194882A (en) * 1961-05-16 1965-07-13 Time Inc Facsimile system with resolved local area contrast control
NL278517A (fr) * 1961-05-16
US3194884A (en) * 1961-05-16 1965-07-13 Time Inc Local contrast controlled facsimile system with variable transmissivity aperture
DE1287114B (de) * 1964-04-29 1969-01-16 Fernseh Gmbh Verfahren und Anordnung zur Verringerung der statistischen Stoerungen in einem Fernsehbild
DE1816276C3 (de) * 1968-12-21 1975-12-18 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel Verfahren und Schaltungsanordnung zur Kontraststeigerung bei Wiederaufzeichnung von punkt- und zeilenweise abgetasteten Bildvorlagen
FR2157701B1 (fr) * 1971-10-26 1974-05-31 Thomson Csf
US4054916A (en) * 1972-06-02 1977-10-18 Dr. -Ing. Rudolf Hell Gmbh Apparatus for improving sharpness when recording continuous-tone pictures
US3919714A (en) * 1974-10-21 1975-11-11 Rca Corp Automatic peaking apparatus
US4058828A (en) * 1975-05-27 1977-11-15 Eastman Kodak Company Document copying apparatus
US3996421A (en) * 1975-09-02 1976-12-07 Hughes Aircraft Company Television display utilizing local area brightness control
DE2654943C2 (de) * 1976-12-03 1985-10-24 Agfa-Gevaert Ag, 5090 Leverkusen Verfahren und Vorrichtung zur Vorprüfung von zu einem Vorlagenband zusammengefaßten Kopiervorlagen
DE2805237C3 (de) * 1978-02-08 1984-09-06 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel Anordnung zur Kontraststeigerung
WO1980000774A1 (fr) * 1978-09-28 1980-04-17 Eastman Kodak Co Mise en valeur electronique d'une image

Also Published As

Publication number Publication date
JPS568140A (en) 1981-01-27
DE3024126A1 (de) 1981-01-22
US4319268A (en) 1982-03-09
GB2057219A (en) 1981-03-25
DE3024126C2 (de) 1987-07-09
GB2057219B (en) 1983-11-09
FR2461414A1 (fr) 1981-01-30
JPS6142263B2 (fr) 1986-09-19

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Legal Events

Date Code Title Description
ST Notification of lapse