DE69623848D1 - Bildverarbeitungsverfahren und -gerät - Google Patents

Bildverarbeitungsverfahren und -gerät

Info

Publication number
DE69623848D1
DE69623848D1 DE69623848T DE69623848T DE69623848D1 DE 69623848 D1 DE69623848 D1 DE 69623848D1 DE 69623848 T DE69623848 T DE 69623848T DE 69623848 T DE69623848 T DE 69623848T DE 69623848 D1 DE69623848 D1 DE 69623848D1
Authority
DE
Germany
Prior art keywords
image processing
processing method
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
DE69623848T
Other languages
English (en)
Other versions
DE69623848T2 (de
Inventor
Hiroshi Kaburagi
Hiroyuki Ichikawa
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
Application filed by Canon Inc filed Critical Canon Inc
Publication of DE69623848D1 publication Critical patent/DE69623848D1/de
Application granted granted Critical
Publication of DE69623848T2 publication Critical patent/DE69623848T2/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
    • H04N1/405—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
    • H04N1/4058—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 with details for producing a halftone screen at an oblique angle
    • 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
    • H04N1/40087—Multi-toning, i.e. converting a continuous-tone signal for reproduction with more than two discrete brightnesses or optical densities, e.g. dots of grey and black inks on white paper

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Image Processing (AREA)
DE69623848T 1995-04-28 1996-04-26 Bildverarbeitungsverfahren und -gerät Expired - Lifetime DE69623848T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP10578995 1995-04-28
JP3362396 1996-02-21
JP3985996 1996-02-27

Publications (2)

Publication Number Publication Date
DE69623848D1 true DE69623848D1 (de) 2002-10-31
DE69623848T2 DE69623848T2 (de) 2003-05-28

Family

ID=27288150

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69623848T Expired - Lifetime DE69623848T2 (de) 1995-04-28 1996-04-26 Bildverarbeitungsverfahren und -gerät

Country Status (3)

Country Link
US (1) US5777759A (de)
EP (1) EP0740459B1 (de)
DE (1) DE69623848T2 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5970178A (en) * 1997-06-30 1999-10-19 Hewlett-Packard Company Adaptive halftoning based on image content
EP0889636B1 (de) * 1997-06-30 2005-08-24 Fuji Photo Film Co., Ltd. System und Verfahren zur Bildübertragung
US6014226A (en) * 1997-07-01 2000-01-11 Xerox Corporation Multilevel halftoning with reduced texture contours and coverage control
JP3976863B2 (ja) 1997-12-24 2007-09-19 キヤノン株式会社 画像処理装置及び方法
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
JPH11339016A (ja) 1998-05-28 1999-12-10 Canon Inc 画像処理装置及び画像処理方法並びにメモリ媒体
JP2001111825A (ja) 1999-10-07 2001-04-20 Canon Inc 画像処理装置及び方法
JP3938456B2 (ja) * 2000-03-16 2007-06-27 パイオニア株式会社 映像信号の輝度階調補正装置
DE10022225B4 (de) 2000-05-08 2015-12-17 Heidelberger Druckmaschinen Ag Mehrstufen-Rasterung mit Rastern beliebiger Rasterweiten und Rasterwinkel
US6903745B2 (en) * 2003-05-19 2005-06-07 Kabushiki Kaisha Toshiba Image processing apparatus and image processing method
US7296184B2 (en) * 2004-01-28 2007-11-13 Microsoft Corporation Method and system for masking dynamic regions in a user interface to enable testing of user interface consistency
JP5132496B2 (ja) * 2008-02-06 2013-01-30 キヤノン株式会社 画像処理装置、画像処理方法ならびにそのプログラムおよび記憶媒体
JP2017030149A (ja) 2015-07-28 2017-02-09 セイコーエプソン株式会社 印刷制御装置および印刷制御方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57120937A (en) * 1981-01-21 1982-07-28 Dainippon Screen Mfg Co Ltd Formation of halftone plate image
US4884080A (en) * 1985-01-31 1989-11-28 Kabushiki Kaisha Toshiba Color image printing apparatus
JPH0793681B2 (ja) * 1986-03-31 1995-10-09 株式会社東芝 多階調記録方法
IN167236B (de) * 1985-06-03 1990-09-22 Rieter Ag Maschf
JPS6258779A (ja) * 1985-09-06 1987-03-14 Dainippon Screen Mfg Co Ltd 網目版画像記録装置
EP0292292B1 (de) * 1987-05-20 1993-10-06 Canon Kabushiki Kaisha Bilderzeugungsgerät
AU605298B2 (en) * 1987-05-29 1991-01-10 Digital Equipment Corporation System for producing dithered images on asymmetric grids
EP0304289A3 (de) * 1987-08-18 1991-03-13 Kabushiki Kaisha Toshiba Halbtonbildreproduktionsverfahren und -Gerät
JPH0666880B2 (ja) * 1988-11-17 1994-08-24 大日本スクリーン製造株式会社 網目版画像形成方法
US5495278A (en) * 1993-01-15 1996-02-27 Fuji Xerox Co., Ltd. Image forming apparatus including a pulse width modulator
JP2772504B2 (ja) * 1993-03-26 1998-07-02 大日本スクリーン製造株式会社 網角度が変更可能な網目版画像生成装置
JPH07221889A (ja) * 1994-02-09 1995-08-18 Mita Ind Co Ltd 画像形成装置

Also Published As

Publication number Publication date
EP0740459A3 (de) 1997-10-01
US5777759A (en) 1998-07-07
DE69623848T2 (de) 2003-05-28
EP0740459B1 (de) 2002-09-25
EP0740459A2 (de) 1996-10-30

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition