FR2587572B1 - Appareil et procede de traitement d'images - Google Patents

Appareil et procede de traitement d'images

Info

Publication number
FR2587572B1
FR2587572B1 FR8603905A FR8603905A FR2587572B1 FR 2587572 B1 FR2587572 B1 FR 2587572B1 FR 8603905 A FR8603905 A FR 8603905A FR 8603905 A FR8603905 A FR 8603905A FR 2587572 B1 FR2587572 B1 FR 2587572B1
Authority
FR
France
Prior art keywords
processing apparatus
image processing
image
processing
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
FR8603905A
Other languages
English (en)
Other versions
FR2587572A1 (fr
Inventor
Takahiro Inoue Yasushi Sato Akio Suzuki Yoshihiro Murasawa Hiroshi Sasame Et Jun Asai Tsukasa Kuge
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.)
Canon Inc
Original Assignee
Canon 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
Priority claimed from JP60054199A external-priority patent/JPS61214663A/ja
Priority claimed from JP60054200A external-priority patent/JPS61214665A/ja
Priority claimed from JP60054198A external-priority patent/JPH0642710B2/ja
Application filed by Canon Inc filed Critical Canon Inc
Publication of FR2587572A1 publication Critical patent/FR2587572A1/fr
Application granted granted Critical
Publication of FR2587572B1 publication Critical patent/FR2587572B1/fr
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
    • H04N1/405—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels
    • H04N1/4055—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a clustered dots or a size modulated halftone pattern
    • H04N1/4056—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a clustered dots or a size modulated halftone pattern the pattern varying in one dimension only, e.g. dash length, pulse width modulation [PWM]

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Color, Gradation (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Image Processing (AREA)
FR8603905A 1985-03-20 1986-03-19 Appareil et procede de traitement d'images Expired - Lifetime FR2587572B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP60054199A JPS61214663A (ja) 1985-03-20 1985-03-20 画像出力方式
JP60054200A JPS61214665A (ja) 1985-03-20 1985-03-20 画像出力方式
JP60054198A JPH0642710B2 (ja) 1985-03-20 1985-03-20 画像処理装置

Publications (2)

Publication Number Publication Date
FR2587572A1 FR2587572A1 (fr) 1987-03-20
FR2587572B1 true FR2587572B1 (fr) 1994-02-18

Family

ID=27295200

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8603905A Expired - Lifetime FR2587572B1 (fr) 1985-03-20 1986-03-19 Appareil et procede de traitement d'images

Country Status (4)

Country Link
US (1) US4814886A (fr)
DE (1) DE3609252A1 (fr)
FR (1) FR2587572B1 (fr)
GB (1) GB2174265B (fr)

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US4903123A (en) * 1987-06-10 1990-02-20 Canon Kabushiki Kaisha Image processing apparatus using inclined line screens to reduce Moire
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JP3158654B2 (ja) * 1992-05-19 2001-04-23 ミノルタ株式会社 デジタルカラー画像形成装置
US5754218A (en) * 1992-06-03 1998-05-19 Eastman Kodak Company Variable dot density printing system using sub-microdot matrixing and a zoom lens
EP0598104B1 (fr) * 1992-06-05 1999-04-28 Eastman Kodak Company Procede et appareil de reproduction d'une image avec impression de niveaux de gris
US5200831A (en) * 1992-06-05 1993-04-06 Eastman Kodak Company Method and arrangement for locally switching gray dot types to reproduce an image with gray level printing
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US5260807A (en) * 1992-06-05 1993-11-09 Eastman Kodak Company Method and apparatus for imbedding controlled structure for gray scale rendering
US5461411A (en) * 1993-03-29 1995-10-24 Texas Instruments Incorporated Process and architecture for digital micromirror printer
US5453777A (en) * 1993-04-12 1995-09-26 Presstek, Inc. Method and apparatus for correcting and adjusting digital image output
DE69422596T2 (de) * 1993-11-12 2000-10-19 Tektronix, Inc. Geometrie von Halbtonrastermustern zum Drucken von Bildern hoher Qualität
US5625460A (en) * 1993-12-09 1997-04-29 Eastman Kodak Company Method and apparatus for locally switching gray dot types to reproduce an image with gray level printing
JPH07221889A (ja) * 1994-02-09 1995-08-18 Mita Ind Co Ltd 画像形成装置
US5661507A (en) * 1994-02-10 1997-08-26 Hewlett-Packard Company Inkjet printing modes to optimize image-element edges for best printing quality
DE69520703T2 (de) * 1994-03-02 2001-08-02 Hewlett-Packard Co. (N.D.Ges.D.Staates Delaware), Palo Alto Erzeugung von Mehrfachtonbildern
DE69521638T2 (de) 1994-03-02 2001-10-25 Hewlett-Packard Co. (N.D.Ges.D.Staates Delaware), Palo Alto Erzeugung von Mehrfachtonbildern
US5625716A (en) * 1994-03-15 1997-04-29 Adobe Systems Incorporated Method for compensating for transfer characteristics of a printing system in a halftone screening process
DE69517241T2 (de) * 1994-05-11 2000-11-23 Agfa-Gevaert N.V., Mortsel Mehrstufige Halbtonrasterung mit Verwendung einer zufallerzeugten Bayer-Matrix
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JPH0869217A (ja) * 1994-08-31 1996-03-12 Canon Inc 画像形成装置
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JPH0899434A (ja) * 1994-09-30 1996-04-16 Mita Ind Co Ltd パウダージェット画像形成装置における印字ヘッド
EP0734151B1 (fr) * 1995-03-22 2000-06-14 Agfa-Gevaert N.V. Tramage stochastique modulé en taille
EP0741488A2 (fr) * 1995-05-03 1996-11-06 Agfa-Gevaert N.V. Calibrage automatique pour un appareil de sortie basé sur le mode de sortie de l'appareil
US6067406A (en) * 1995-05-03 2000-05-23 Agfa-Gevaert N.V. Automatic calibration for output devices based on device output mode
CN1062079C (zh) * 1995-06-21 2001-02-14 时代集团公司 调幅调频挂网方法
US6166757A (en) * 1995-06-30 2000-12-26 Kyocera Corporation Led head
US5751470A (en) * 1996-03-12 1998-05-12 Lexmark International, Inc. Method for enhanced print quality on print engines with at least one high resolution dimension
JP3387738B2 (ja) * 1996-06-28 2003-03-17 株式会社沖データ 画像パターン変換装置
JPH10145625A (ja) 1996-11-15 1998-05-29 Minolta Co Ltd 多色画像形成装置及び多色画像形成方法
US6151058A (en) * 1997-03-18 2000-11-21 Xante Corporation Dynamic control of laser power in electrophotographic device to produce accurate positive and negative printed output
US5942745A (en) * 1997-12-17 1999-08-24 Presstek, Inc. Method and apparatus for digital imaging with reduced periodic artifacts
JP3522147B2 (ja) * 1998-04-28 2004-04-26 セイコーエプソン株式会社 ハーフトーニング装置及び画像形成装置
JP3663967B2 (ja) * 1999-04-05 2005-06-22 富士ゼロックス株式会社 画像処理方法及び画像処理装置
US6325487B1 (en) * 1999-06-30 2001-12-04 Xerox Corporation Systems and methods for generating high addressability images
US6604806B1 (en) * 1999-10-20 2003-08-12 Canon Kabushiki Kaisha High resolution printing
US7365883B2 (en) * 2004-01-09 2008-04-29 Hewlett-Packard Development Company, L.P. Dither matrix design using sub-pixel addressability
JP4498267B2 (ja) * 2005-11-22 2010-07-07 キヤノン株式会社 画像処理方法およびその装置
JP5254739B2 (ja) * 2008-10-24 2013-08-07 キヤノン株式会社 画像形成装置およびその制御方法
JP5241429B2 (ja) * 2008-10-24 2013-07-17 キヤノン株式会社 画像形成装置およびその制御方法
JP5254740B2 (ja) * 2008-10-24 2013-08-07 キヤノン株式会社 画像処理装置および画像処理方法

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Also Published As

Publication number Publication date
FR2587572A1 (fr) 1987-03-20
US4814886A (en) 1989-03-21
GB2174265B (en) 1989-07-12
GB2174265A (en) 1986-10-29
DE3609252C2 (fr) 1990-08-16
DE3609252A1 (de) 1986-10-02
GB8606880D0 (en) 1986-04-23

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