BR9800015A - Sistema de semitonagem de pontos estocasticamente acumulados - Google Patents

Sistema de semitonagem de pontos estocasticamente acumulados

Info

Publication number
BR9800015A
BR9800015A BR9800015A BR9800015A BR9800015A BR 9800015 A BR9800015 A BR 9800015A BR 9800015 A BR9800015 A BR 9800015A BR 9800015 A BR9800015 A BR 9800015A BR 9800015 A BR9800015 A BR 9800015A
Authority
BR
Brazil
Prior art keywords
semitonage
stochastically
accumulated points
accumulated
points
Prior art date
Application number
BR9800015A
Other languages
English (en)
Inventor
Shen-Ge Wang
Original Assignee
Xerox Corp
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 Xerox Corp filed Critical Xerox Corp
Publication of BR9800015A publication Critical patent/BR9800015A/pt

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
BR9800015A 1997-01-21 1998-01-21 Sistema de semitonagem de pontos estocasticamente acumulados BR9800015A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/786,470 US5859955A (en) 1997-01-21 1997-01-21 Stochastically clustered dot halftoning system

Publications (1)

Publication Number Publication Date
BR9800015A true BR9800015A (pt) 1999-03-16

Family

ID=25138689

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9800015A BR9800015A (pt) 1997-01-21 1998-01-21 Sistema de semitonagem de pontos estocasticamente acumulados

Country Status (2)

Country Link
US (1) US5859955A (pt)
BR (1) BR9800015A (pt)

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69422353T2 (de) * 1993-09-03 2000-06-21 Agfa Gevaert Nv Verfahren zur Herstellung eines frequenzmodulierten Halbtonrasters
JP3779406B2 (ja) * 1996-11-20 2006-05-31 松下電器産業株式会社 画像処理装置および画像処理方法
US6020978A (en) * 1997-09-30 2000-02-01 Lexmark International, Inc. Method and apparatus for color halftoning using interlocked threshold arrays
US6356363B1 (en) 1997-09-30 2002-03-12 Lexmark International, Inc. Method for halftoning using interlocked threshold arrays or interlocked dot profiles
JP3427026B2 (ja) * 1999-12-24 2003-07-14 大日本スクリーン製造株式会社 網点形成方法および装置
US7286682B1 (en) 2000-08-31 2007-10-23 Xerox Corporation Show-through watermarking of duplex printed documents
US6775029B1 (en) 2000-10-30 2004-08-10 Xerox Corporation Method for efficient calibration of printing devices
US7050638B2 (en) * 2000-12-08 2006-05-23 Fujitsu Limited Binary-coding pattern creating method and apparatus, binary-coding pattern, and computer-readable recording medium in which binary-coding pattern creating program is recorded
US6956676B2 (en) * 2000-12-28 2005-10-18 Xerox Corporation Methods and systems for providing halftone screens
US6710778B2 (en) 2001-02-12 2004-03-23 Lexmark International, Inc. Method for halftoning using a difference weighting function
US6724501B2 (en) * 2001-06-22 2004-04-20 Hewlett-Packard Development Company, L.P. Apparatus and method for dither matrix design for color halftoning using dispersed dot clusters
US7941750B2 (en) * 2001-10-11 2011-05-10 Hewlett-Packard Development Company, L.P. Method and system for defining separate print quality regions within a print job
EP1336872B1 (en) * 2002-02-19 2007-05-30 Canon Kabushiki Kaisha Production process of light amount adjustment member, light amount adjustment member, light amount adjustment device and photographing apparatus
US7239429B2 (en) * 2003-05-29 2007-07-03 Seiko Epson Corporation Method and apparatus for generating dispersed cluster screen
US7125094B2 (en) * 2003-12-19 2006-10-24 Xerox Corporation Systems and methods for compensating for streaks in images
JP4514132B2 (ja) * 2004-05-28 2010-07-28 大日本スクリーン製造株式会社 網点画像生成用の閾値マトリクス生成方法、網点画像生成方法および装置、並びに閾値マトリクス
KR100561372B1 (ko) * 2004-09-10 2006-03-17 삼성전자주식회사 인간의 시각 특성과 프린터 모델 특성에 기초한 집중형도트 스크린 설계방법 및 장치, 그리고 설계된 스크린을이용하여 이진영상을 출력하는 화상형성장치
JP4111451B2 (ja) * 2004-10-08 2008-07-02 大日本スクリーン製造株式会社 閾値マトリクス生成方法および記録媒体
JP4396896B2 (ja) * 2005-01-07 2010-01-13 大日本スクリーン製造株式会社 閾値マトリクス生成方法、閾値マトリクス生成装置および記録媒体
US20060197992A1 (en) * 2005-03-02 2006-09-07 Xerox Corporation Stochastic screens for rendering devices with high-addressability
US7616347B2 (en) * 2005-04-29 2009-11-10 International Business Machines Corporation System and method for multi-bit halftoning
KR100648928B1 (ko) * 2005-07-25 2006-11-27 삼성전자주식회사 하프톤 스크린 설계 방법 및 그 장치
US7626730B2 (en) * 2006-03-31 2009-12-01 Eastman Kodak Company Method of making a multilevel halftone screen
US7830569B2 (en) * 2006-03-31 2010-11-09 Eastman Kodak Company Multilevel halftone screen and sets thereof
JP4929122B2 (ja) * 2007-10-16 2012-05-09 キヤノン株式会社 画像処理装置およびその方法、並びに、プログラム
GB2473475B (en) * 2009-09-11 2014-12-17 Andrew William Peter Cave Computer program for generating 1-bit image data from multiple-bit image data
US8576449B2 (en) 2011-04-28 2013-11-05 Xerox Corporation Parametrically controlled halftone spot function for an irregular halftone grid
US8467099B2 (en) * 2011-05-16 2013-06-18 Xerox Corporation Directional halftone method with enhanced edge and detail rendition
US8670157B2 (en) 2012-07-12 2014-03-11 Xerox Corporation Dot growth system and method
US8643905B1 (en) 2012-07-12 2014-02-04 Xerox Corporation Isolated hole detection and growth
US8810859B2 (en) 2012-07-12 2014-08-19 Xerox Corporation Dot growth system and method
US8665499B2 (en) 2012-07-12 2014-03-04 Xerox Corporation Isolated hole detection and growth
US8842342B2 (en) 2012-07-12 2014-09-23 Xerox Corporation Method and system for isolated hole detection and growth in a document image
US8804200B2 (en) 2012-07-12 2014-08-12 Xerox Corporation Method and system for isolated dot detection and growth in a document image
GB2522422A (en) * 2014-01-22 2015-07-29 Landa Corp Ltd Apparatus and method for half-toning
US9811923B2 (en) 2015-09-24 2017-11-07 Snaptrack, Inc. Stochastic temporal dithering for color display devices
US10410100B1 (en) 2017-11-14 2019-09-10 Landa Corporation Ltd. AM Screening

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4149194A (en) * 1977-07-07 1979-04-10 Xerox Corporation Variable angle electronic halftone screening
DE3171227D1 (en) * 1981-09-12 1985-08-08 Hell Rudolf Dr Ing Gmbh Method for the production of printing plates by means of printing irregularly distributed points
JPS5968245A (ja) * 1982-10-13 1984-04-18 Ricoh Co Ltd 多色インクジエツト記録方法
DE3634939A1 (de) * 1986-10-14 1988-04-28 Du Pont Deutschland Verfahren zum aufzeichnen von quasihalbtonbildern
JPH02145085A (ja) * 1988-11-25 1990-06-04 Fuji Xerox Co Ltd フィルム画像読取装置
JPH03128574A (ja) * 1989-02-16 1991-05-31 Ricoh Co Ltd 疑似中間調処理装置
US5181162A (en) * 1989-12-06 1993-01-19 Eastman Kodak Company Document management and production system
US5341228A (en) * 1990-12-04 1994-08-23 Research Corporation Technologies Method and apparatus for halftone rendering of a gray scale image using a blue noise mask
US5438431A (en) * 1992-05-21 1995-08-01 Ostromoukhov; Victor B. Method and apparatus for generating digital halftone images using a rotated dispersed dither matrix
US5489991A (en) * 1992-10-09 1996-02-06 International Business Machines Corporation Method for generating digital halftone images
DE69524651T2 (de) * 1994-01-27 2002-06-13 Hewlett Packard Co Drucksystem und -methode
US5704021A (en) * 1994-01-27 1997-12-30 Hewlett-Packard Company Adaptive color rendering by an inkjet printer based on object type
US5579446A (en) * 1994-01-27 1996-11-26 Hewlett-Packard Company Manual/automatic user option for color printing of different types of objects
US5394252A (en) * 1994-03-02 1995-02-28 Xerox Corporation Hybrid quantization method for color document reproduction
US5598204A (en) * 1994-03-25 1997-01-28 Xerox Corporation Image halftoning system capable of producing additional gradations
US5673121A (en) * 1996-06-17 1997-09-30 Xerox Corporation Stochastic halftoning screening method
US5740279A (en) * 1996-11-26 1998-04-14 Xerox Corporation Cluster dot halftoning system

Also Published As

Publication number Publication date
US5859955A (en) 1999-01-12

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Legal Events

Date Code Title Description
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B09B Patent application refused [chapter 9.2 patent gazette]

Free format text: INDEFIRO O PEDIDO DE ACORDO COM O ART. 8O COMBINADO COM ART. 13 DA LPI.

B09B Patent application refused [chapter 9.2 patent gazette]

Free format text: MANTIDO O INDEFERIMENTO UMA VEZ QUE NAO FOI APRESENTADO RECURSO DENTRO DO PRAZO LEGAL.