DE68922312D1 - Elektronische vorrichtung zur halbtonrasterung graphischer vorlagen, die moiremuster unterdrückt, mit verwendung von pseudo-zufälliger zeichensatzauswahl. - Google Patents

Elektronische vorrichtung zur halbtonrasterung graphischer vorlagen, die moiremuster unterdrückt, mit verwendung von pseudo-zufälliger zeichensatzauswahl.

Info

Publication number
DE68922312D1
DE68922312D1 DE68922312T DE68922312T DE68922312D1 DE 68922312 D1 DE68922312 D1 DE 68922312D1 DE 68922312 T DE68922312 T DE 68922312T DE 68922312 T DE68922312 T DE 68922312T DE 68922312 D1 DE68922312 D1 DE 68922312D1
Authority
DE
Germany
Prior art keywords
dot
font
fonts
halftone
patterns
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
DE68922312T
Other languages
English (en)
Other versions
DE68922312T2 (de
Inventor
Edward Granger
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Application granted granted Critical
Publication of DE68922312D1 publication Critical patent/DE68922312D1/de
Publication of DE68922312T2 publication Critical patent/DE68922312T2/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
    • H04N1/405—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Image Processing (AREA)
  • Color Image Communication Systems (AREA)
DE68922312T 1988-11-16 1989-11-13 Elektronische vorrichtung zur halbtonrasterung graphischer vorlagen, die moiremuster unterdrückt, mit verwendung von pseudo-zufälliger zeichensatzauswahl. Expired - Fee Related DE68922312T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/272,592 US4916545A (en) 1988-11-16 1988-11-16 Electronic graphic arts screener that suppresses Moire patterns using pseudo-random font selection
PCT/US1989/004939 WO1990006034A2 (en) 1988-11-16 1989-11-13 An electronic graphic arts screener that suppresses moire patterns using pseudo-random font selection

Publications (2)

Publication Number Publication Date
DE68922312D1 true DE68922312D1 (de) 1995-05-24
DE68922312T2 DE68922312T2 (de) 1996-01-11

Family

ID=23040452

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68922312T Expired - Fee Related DE68922312T2 (de) 1988-11-16 1989-11-13 Elektronische vorrichtung zur halbtonrasterung graphischer vorlagen, die moiremuster unterdrückt, mit verwendung von pseudo-zufälliger zeichensatzauswahl.

Country Status (6)

Country Link
US (1) US4916545A (de)
EP (1) EP0444093B1 (de)
JP (1) JPH04503893A (de)
AT (1) ATE121582T1 (de)
DE (1) DE68922312T2 (de)
WO (1) WO1990006034A2 (de)

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JP3542685B2 (ja) * 1995-06-27 2004-07-14 セイコーエプソン株式会社 マルチトーンをもつバイナリ画像の圧縮及び復元のための装置及び方法
US5745260A (en) * 1995-12-20 1998-04-28 Eastman Kodak Company Coarse/fine fonts
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US6097502A (en) * 1996-12-18 2000-08-01 Seiko Epson Corporation Multilevel screening for color laser printer
JP3692693B2 (ja) * 1997-03-12 2005-09-07 コニカミノルタビジネステクノロジーズ株式会社 階調再現方法及び階調再現装置
US5991513A (en) * 1997-09-30 1999-11-23 Levien; Raphael L Method and apparatus for suppressing moire patterns
DE19812028A1 (de) 1998-03-19 1999-09-23 Heidelberger Druckmasch Ag Verfahren zur Koordinatenumrechnung von Bilddaten mit zufälligem Offset der Bildpunkte
JP2002520917A (ja) * 1998-07-01 2002-07-09 イクエーター テクノロジーズ インコーポレイテッド 画素値を変更するための画像処理回路及び方法
JP4155634B2 (ja) * 1998-09-21 2008-09-24 コニカミノルタビジネステクノロジーズ株式会社 画像形成装置及び画像形成システム並びにコンピュータ読み取り可能な記録媒体
JP2000217000A (ja) * 1998-11-19 2000-08-04 Murata Mach Ltd 画像処理装置、画像処理方法及び記録媒体
AU3337500A (en) 1999-03-16 2000-10-04 Megadot Systems Limited Improvements relating to halftone patterns
US6382099B1 (en) 1999-05-17 2002-05-07 Mark L. Herrmann Printing apparatus and method for preventing barring or banding on a printed substrate
US6625328B2 (en) * 2001-12-27 2003-09-23 Anvik Corporation Text-moire' minimization
US7342696B2 (en) * 2003-08-25 2008-03-11 Xerox Corporation Computational moiré compensation
JP2005136612A (ja) * 2003-10-29 2005-05-26 Dainippon Screen Mfg Co Ltd 網点形成方法、網点形成装置および網点記録媒体
US7454088B2 (en) * 2003-11-20 2008-11-18 Microsoft Corporation Estimating orientation angle and translation values of a scanned image
CN101763628B (zh) * 2008-12-23 2011-11-16 北京大学 一种挂网图像边界位置平滑的方法及装置
US8363281B2 (en) * 2009-03-17 2013-01-29 Eastman Kodak Company Efficient image printing with printing systems employing printheads with drop ejectors providing multiple-sized dots
US8351085B2 (en) * 2009-08-12 2013-01-08 Xerox Corporation Moire-free color halftoning methods, apparatus and systems
US8467103B2 (en) * 2009-08-12 2013-06-18 Xerox Corporation Moiré-free color halftoning methods, apparatus and systems
US9819828B2 (en) * 2016-03-15 2017-11-14 Xerox Corporation Non-printing dot halftone patterns
US10014158B1 (en) * 2017-05-09 2018-07-03 Fei Company Innovative image processing in charged particle microscopy
US11790564B2 (en) * 2020-03-30 2023-10-17 Google Llc Encoders for improved image dithering
US11796905B2 (en) * 2020-08-12 2023-10-24 Dolby Laboratories Licensing Corporation Moire reduction with controlled perforation location

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Also Published As

Publication number Publication date
JPH04503893A (ja) 1992-07-09
WO1990006034A2 (en) 1990-05-31
WO1990006034A3 (en) 1990-07-12
DE68922312T2 (de) 1996-01-11
EP0444093A1 (de) 1991-09-04
ATE121582T1 (de) 1995-05-15
EP0444093B1 (de) 1995-04-19
US4916545A (en) 1990-04-10

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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