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WO1990006033A3 - Appareil d'adressage d'un caractere supprimant des configurations moirees induites et mode d'utilisation - Google Patents

Appareil d'adressage d'un caractere supprimant des configurations moirees induites et mode d'utilisation Download PDF

Info

Publication number
WO1990006033A3
WO1990006033A3 PCT/US1989/004938 US8904938W WO9006033A3 WO 1990006033 A3 WO1990006033 A3 WO 1990006033A3 US 8904938 W US8904938 W US 8904938W WO 9006033 A3 WO9006033 A3 WO 9006033A3
Authority
WO
WIPO (PCT)
Prior art keywords
pattern
font
address
addressing
moire
Prior art date
Application number
PCT/US1989/004938
Other languages
English (en)
Other versions
WO1990006033A2 (fr
Inventor
Edward Maurice Granger
John Franklin Hamilton Jr
Larry Greg Wash
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
Publication of WO1990006033A2 publication Critical patent/WO1990006033A2/fr
Publication of WO1990006033A3 publication Critical patent/WO1990006033A3/fr

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)
  • Color, Gradation (AREA)
  • Color Image Communication Systems (AREA)

Abstract

L'invention concerne un appareil supprimant une configuration moirée induite par une unité de sérigraphie et résultant de l'échantillonnage successif d'une configuration de caractère stockée à topographie binaire, dans une configuration d'écriture basée sur un réseau. On supprime ledit moiré en formant une adresse, utilisée pour accéder successivement à chaque bit désiré dans la configuration de caractère stockée. L'adresse se compose d'au moins deux parties, chacune créée par sommation d'une valeur de position orthogonale avec une quantité de bruit spécifique correspondante. La quantité est contenue dans une fonction de bruit (1720) définie par une répartition de probabilité sensiblement uniforme dans une région présentant une largeur égale à l'espace situé entre des pixels de reproduction, et représente une valeur sensiblement nulle ailleurs.
PCT/US1989/004938 1988-11-16 1989-11-13 Appareil d'adressage d'un caractere supprimant des configurations moirees induites et mode d'utilisation WO1990006033A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/272,591 US4977458A (en) 1988-11-16 1988-11-16 Apparatus for addressing a font to suppress Moire patterns occurring thereby and a method for use therein
US272,591 1988-11-16

Publications (2)

Publication Number Publication Date
WO1990006033A2 WO1990006033A2 (fr) 1990-05-31
WO1990006033A3 true WO1990006033A3 (fr) 1990-07-26

Family

ID=23040448

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1989/004938 WO1990006033A2 (fr) 1988-11-16 1989-11-13 Appareil d'adressage d'un caractere supprimant des configurations moirees induites et mode d'utilisation

Country Status (4)

Country Link
US (1) US4977458A (fr)
EP (1) EP0466690A1 (fr)
JP (1) JPH04501798A (fr)
WO (1) WO1990006033A2 (fr)

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EP0740458B1 (fr) * 1991-02-08 2002-06-19 Adobe Systems Inc. Procédé pour la commande de la taille des points dans la restitution à demi-teintes numérique utilisant des matrices de seuils à multiples cellules
US5285291A (en) * 1991-02-08 1994-02-08 Adobe Systems Incorporated Methods of assigning pixels to cells of a halftone grid
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US5276535A (en) * 1991-12-24 1994-01-04 Levien Raphael L Method and apparatus for halftoning of images using grayscale error diffusion
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US5446558A (en) * 1992-10-05 1995-08-29 Eastman Kodak Company Apparatus and associated method for representing elliptical halftone dots
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US5477344A (en) * 1993-11-19 1995-12-19 Eastman Kodak Company Duplicating radiographic, medical or other black and white images using laser thermal digital halftone printing
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US5764377A (en) * 1994-12-15 1998-06-09 Xerox Corporation Video interlace system for multibeam raster output scanner
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US6034664A (en) * 1997-06-25 2000-03-07 Sun Microsystems, Inc. Method and apparatus for pseudo-random noise generation based on variation of intensity and coloration
US5991513A (en) * 1997-09-30 1999-11-23 Levien; Raphael L Method and apparatus for suppressing moire patterns
US6020897A (en) * 1997-12-22 2000-02-01 Adobe Systems Incorporated Dehalftoning of digital images
DE19812028A1 (de) * 1998-03-19 1999-09-23 Heidelberger Druckmasch Ag Verfahren zur Koordinatenumrechnung von Bilddaten mit zufälligem Offset der Bildpunkte
US6382099B1 (en) 1999-05-17 2002-05-07 Mark L. Herrmann Printing apparatus and method for preventing barring or banding on a printed substrate
SE516914C2 (sv) * 1999-09-09 2002-03-19 Micronic Laser Systems Ab Metoder och rastrerare för högpresterande mönstergenerering
JP4572051B2 (ja) * 2000-02-06 2010-10-27 ヒューレット−パッカード・インデイゴ・ビー・ブイ 網掛けする方法
US7050653B2 (en) * 2000-04-05 2006-05-23 Anoto Ab Identification of virtual raster pattern
DE10022225B4 (de) * 2000-05-08 2015-12-17 Heidelberger Druckmaschinen Ag Mehrstufen-Rasterung mit Rastern beliebiger Rasterweiten und Rasterwinkel
US7253921B2 (en) * 2000-10-11 2007-08-07 True Color Technology Gmbh Process and target for calibration of digital input devices
US7454088B2 (en) * 2003-11-20 2008-11-18 Microsoft Corporation Estimating orientation angle and translation values of a scanned image
DE102005038251B4 (de) * 2005-08-12 2008-04-24 E.V.I. Vertriebs Gmbh Kratzschutzfolie für Displays
JP4938784B2 (ja) * 2005-10-26 2012-05-23 マイクロニック レーザー システムズ アクチボラゲット 書込み装置および方法
US8122846B2 (en) * 2005-10-26 2012-02-28 Micronic Mydata AB Platforms, apparatuses, systems and methods for processing and analyzing substrates
KR101415313B1 (ko) * 2006-02-28 2014-07-04 마이크로닉 마이데이터 아베 기판 처리 및 분석용 플랫폼, 장치, 시스템, 그리고 방법
JP5038763B2 (ja) * 2006-04-04 2012-10-03 株式会社リコー インクジェット記録装置と画像処理方法、画像処理制御プログラムと記録媒体および高浸透性顔料インク
JP6453780B2 (ja) 2013-03-12 2019-01-16 マイクロニック アーベーＭｙｃｒｏｎｉｃ Ａｂ 機械的に形成されるアライメント基準体の方法及び装置
WO2014140047A2 (fr) 2013-03-12 2014-09-18 Micronic Mydata AB Procédé et dispositif d'écriture de masques photographiques avec réduction des erreurs mura
JP2019132966A (ja) * 2018-01-31 2019-08-08 コニカミノルタ株式会社 画像形成装置

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GB2026283A (en) * 1978-06-23 1980-01-30 Hell R Ing Gmbh Production of half tone facsimile separations with optional screen angles
US4533941A (en) * 1983-01-14 1985-08-06 Coulter Systems Corporation Method and apparatus for half-tone reproduction of a varying tone original image
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GB2026283A (en) * 1978-06-23 1980-01-30 Hell R Ing Gmbh Production of half tone facsimile separations with optional screen angles
US4578714A (en) * 1981-03-30 1986-03-25 Canon Kabushiki Kaisha Halftone image recording apparatus
US4533941A (en) * 1983-01-14 1985-08-06 Coulter Systems Corporation Method and apparatus for half-tone reproduction of a varying tone original image

Also Published As

Publication number Publication date
EP0466690A1 (fr) 1992-01-22
JPH04501798A (ja) 1992-03-26
WO1990006033A2 (fr) 1990-05-31
US4977458A (en) 1990-12-11

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