BRPI0401842A - Sistemas e métodos para projetar telas de linhas anamórficas digitais - Google Patents

Sistemas e métodos para projetar telas de linhas anamórficas digitais

Info

Publication number
BRPI0401842A
BRPI0401842A BR0401842-7A BRPI0401842A BRPI0401842A BR PI0401842 A BRPI0401842 A BR PI0401842A BR PI0401842 A BRPI0401842 A BR PI0401842A BR PI0401842 A BRPI0401842 A BR PI0401842A
Authority
BR
Brazil
Prior art keywords
systems
digital
screens
methods
digital line
Prior art date
Application number
BR0401842-7A
Other languages
English (en)
Inventor
Charles M Hains
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 BRPI0401842A publication Critical patent/BRPI0401842A/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
    • 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, Gradation (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Sorting Of Articles (AREA)
  • Digital Computer Display Output (AREA)

Abstract

"SISTEMAS E MéTODOS PARA PROJETAR TELAS DE LINHAS ANAMóRFICAS DIGITAIS". A presente invenção refere-se à criação de telas de linha digital que foi considerada ser um subconjunto da criação de telas de pontos de cluster digitais. As sujeições geométricas necessárias para telas de pontos de cluster digitais resultaram na criação de telas de linhas digitais. Por conseguinte, o número de ângulos disponíveis para telas de linhas digitais foi também significantemente limitado. Em várias modalidades exemplares dos sistemas e métodos de acordo com essa invenção, uma célula de tela de linha digital é definida de modo que vetores definindo a célula de tela de linha digital não sejam necessariamente isométricos e não sejam necessariamente em ângulos retos uns aos outros. Usando-se uma grade de alta endereçabilidade que tem diferentes resoluções ao longo dos eixos x e y da grade, os sistemas e métodos de acordo com essa invenção permitem as componentes dos vetores ao longo da direção de alta endereçabilidade serem números não inteiros múltiplos das componentes dos vetores ao longo da outra direção da grade.
BR0401842-7A 2003-05-28 2004-05-27 Sistemas e métodos para projetar telas de linhas anamórficas digitais BRPI0401842A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/445,851 US7277201B2 (en) 2003-05-28 2003-05-28 Systems and methods for designing digital anamorphic line screens

Publications (1)

Publication Number Publication Date
BRPI0401842A true BRPI0401842A (pt) 2005-02-09

Family

ID=33131551

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0401842-7A BRPI0401842A (pt) 2003-05-28 2004-05-27 Sistemas e métodos para projetar telas de linhas anamórficas digitais

Country Status (6)

Country Link
US (1) US7277201B2 (pt)
EP (1) EP1482722B1 (pt)
JP (1) JP4327020B2 (pt)
CN (1) CN100480852C (pt)
BR (1) BRPI0401842A (pt)
DE (1) DE602004011423T2 (pt)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7139101B2 (en) * 2002-10-31 2006-11-21 Xerox Corporation Anisotropic stochastic screen
US20060279788A1 (en) * 2005-06-10 2006-12-14 Monotype Imaging, Inc. Automatic generation of supercell halftoning threshold arrays for high addressability devices
DE102008021639A1 (de) * 2008-04-30 2009-12-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und Verfahren zum Erzeugen einer CT-Rekonstruktion eines Objekts mit einem hochaufgelösten interessierenden Objektbereich
US10477068B2 (en) * 2016-03-18 2019-11-12 Ricoh Company, Ltd. Image processing apparatus for primary color and spot halftoning

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4918622A (en) 1988-11-16 1990-04-17 Eastman Kodak Company Electronic graphic arts screener
US5442461A (en) * 1991-09-03 1995-08-15 Levien; Raphael L. Screen generation for halftone screening of images with reduction of irrational correction artifacts
US5325216A (en) 1991-12-23 1994-06-28 Xerox Corporation Raster output scanner with subpixel addressability
CN1067970A (zh) * 1992-03-24 1993-01-13 龙口市印刷总厂 大网点印刷制版方法
US5274472A (en) 1992-05-21 1993-12-28 Xerox Corporation High addressability image generator using pseudo interpolation of video and screen data
US5485289A (en) 1993-10-28 1996-01-16 Xerox Corporation Hyperacuity printer architecture
JP3344604B2 (ja) * 1994-06-17 2002-11-11 富士写真フイルム株式会社 網点画像の作成方法およびその装置
US5606648A (en) 1994-12-08 1997-02-25 Xerox Corporation Apparatus and method for modulating image signals in a high addressability printing machine
US5742703A (en) 1995-10-11 1998-04-21 Xerox Corporation Method and apparatus for the resolution enhancement of gray-scale images that include text and line art
US5655061A (en) 1995-11-15 1997-08-05 Xerox Corporation System and method for providing a high addressable printing system
US5920683A (en) 1997-06-27 1999-07-06 Xerox Corporation Image enhancement system for high addressability printing
US6262811B1 (en) 1998-01-07 2001-07-17 Xerox Corporation Increased functionality for holladay halftoning
US6208430B1 (en) 1998-01-07 2001-03-27 Xerox Corporation Increased functionality for Holladay halftoning
US6442300B1 (en) 1999-01-05 2002-08-27 Xerox Corporation Three-pixel line screen with high addressability and error diffusion
US6325487B1 (en) 1999-06-30 2001-12-04 Xerox Corporation Systems and methods for generating high addressability images
US6449396B1 (en) 1999-07-07 2002-09-10 Xerox Corporation Compact rendering for processing binary high addressability images
CN1292509A (zh) * 1999-09-23 2001-04-25 上海任氏电脑制版有限公司 网点印刷制版的防伪方法及用该方法制成的印品
DE19950420A1 (de) * 1999-10-20 2001-04-26 Basf Ag Partikelförmige, expandierbare Olefinpolymerisate

Also Published As

Publication number Publication date
EP1482722A2 (en) 2004-12-01
DE602004011423D1 (de) 2008-03-13
CN1573539A (zh) 2005-02-02
US7277201B2 (en) 2007-10-02
EP1482722B1 (en) 2008-01-23
JP4327020B2 (ja) 2009-09-09
US20040239962A1 (en) 2004-12-02
CN100480852C (zh) 2009-04-22
DE602004011423T2 (de) 2009-02-05
JP2004357291A (ja) 2004-12-16
EP1482722A3 (en) 2006-04-26

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 12A ANUIDADE.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: EM VIRTUDE DO ARQUIVAMENTO PUBLICADO NA RPI 2385 DE 20-09-2016 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDO O ARQUIVAMENTO DO PEDIDO DE PATENTE, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.