BR0002705A - Difusão de erro aperfeiçoada para impressão digital - Google Patents

Difusão de erro aperfeiçoada para impressão digital

Info

Publication number
BR0002705A
BR0002705A BR0002705-7A BR0002705A BR0002705A BR 0002705 A BR0002705 A BR 0002705A BR 0002705 A BR0002705 A BR 0002705A BR 0002705 A BR0002705 A BR 0002705A
Authority
BR
Brazil
Prior art keywords
error diffusion
data
digital printing
improved error
digital
Prior art date
Application number
BR0002705-7A
Other languages
English (en)
Other versions
BR0002705B1 (pt
Inventor
David A Mantell
James B Kuwik
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 BR0002705A publication Critical patent/BR0002705A/pt
Publication of BR0002705B1 publication Critical patent/BR0002705B1/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
    • H04N1/4051—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a dispersed dots halftone pattern, the dots having substantially the same size
    • H04N1/4052—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a dispersed dots halftone pattern, the dots having substantially the same size by error diffusion, i.e. transferring the binarising error to neighbouring dot decisions
    • H04N1/4053—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a dispersed dots halftone pattern, the dots having substantially the same size by error diffusion, i.e. transferring the binarising error to neighbouring dot decisions with threshold modulated relative to input image data or vice versa
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K2215/00—Arrangements for producing a permanent visual presentation of the output data
    • G06K2215/0082—Architecture adapted for a particular function
    • G06K2215/0094—Colour printing

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Color, Gradation (AREA)

Abstract

Patente de Invenção: <B>"DIFUSãO DE ERRO APERFEIçOADA PARA IMPRESSãO DIGITAL"<D>. Sistema para simulação de escalas de cinza em uma impressora digital, tal como uma impressora a jato de tinta, explora uma técnica de difusão de erro modificada. Quando um dado para um pixel particular em uma imagem é 0, o dado é substituído por um dado artificial de baixo nível, tal como 4, em uma escala de 0 a 255. A adição do dado artificial no algoritmo de difusão de erro evita artefatos causados pela presença de um grande número de zeros no algoritmo de difusão de erro.
BRPI0002705-7A 1999-06-21 2000-06-20 mÉtodo de difusço de erro aplicado a dados de imagem digital para impressço com um aparelho de impressço digital. BR0002705B1 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/337,435 US6751358B1 (en) 1999-06-21 1999-06-21 Error diffusion for digital printing

Publications (2)

Publication Number Publication Date
BR0002705A true BR0002705A (pt) 2001-01-30
BR0002705B1 BR0002705B1 (pt) 2012-08-07

Family

ID=23320531

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0002705-7A BR0002705B1 (pt) 1999-06-21 2000-06-20 mÉtodo de difusço de erro aplicado a dados de imagem digital para impressço com um aparelho de impressço digital.

Country Status (2)

Country Link
US (1) US6751358B1 (pt)
BR (1) BR0002705B1 (pt)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4335467B2 (ja) * 2000-03-07 2009-09-30 セイコーインスツル株式会社 濃淡画像の階調再現方法および装置
US6816285B1 (en) * 2000-11-27 2004-11-09 Xerox Corporation Digital darker/lighter for halftone images
US7486834B2 (en) * 2005-01-18 2009-02-03 Lexmark International, Inc. System and method for dynamically shifting error diffusion data
US7760390B2 (en) * 2005-12-15 2010-07-20 Xerox Corporation Binary resolution conversion aparatus and method
US8031372B2 (en) * 2008-04-22 2011-10-04 Xerox Corporation System and method for distributing image values of a color separation
JP5219726B2 (ja) * 2008-10-10 2013-06-26 キヤノン株式会社 画像処理装置及びその制御方法
US8384971B2 (en) * 2008-10-14 2013-02-26 Xerox Corporation System and method for rendering image values to be printed in a single pass by serially arranged printheads
US8764151B2 (en) 2010-06-21 2014-07-01 Xerox Corporation System and method for preserving edges while enabling inkjet correction within an interior of an image
US20140198126A1 (en) * 2013-01-16 2014-07-17 Qualcomm Mems Technologies, Inc. Methods and apparatus for reduced low-tone half-tone pattern visibility

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5258854A (en) * 1991-12-06 1993-11-02 Xerox Corporation Converting between write-white, write-black and neutral bitmaps
US5621546A (en) * 1993-11-02 1997-04-15 Xerox Corporation Method and apparatus for vector error diffusion with output color control
US5535019A (en) 1994-09-15 1996-07-09 Xerox Corporation Error diffusion halftoning with homogeneous response in high/low intensity image regions
US6529287B1 (en) * 1996-01-31 2003-03-04 Avision Inc. Image processing system
US5748785A (en) 1996-09-26 1998-05-05 Xerox Corporation Inter-separation color image processing using error diffusion
US5991512A (en) * 1997-07-31 1999-11-23 Hewlett-Packard Company Ink relocation for color halftones
JP3711707B2 (ja) * 1997-08-07 2005-11-02 ブラザー工業株式会社 画像２値化方法、画像２値化装置および記録媒体
US6552824B2 (en) * 1998-12-17 2003-04-22 Eastman Kodak Company Method of processing pixels with binary or multibit error diffusion
US7719722B2 (en) * 2002-01-11 2010-05-18 Xerox Corporation System and method of halftoning for multi-pass rendering
US8009327B2 (en) * 2002-07-11 2011-08-30 Canon Kabushiki Kaisha Method and apparatus for image processing

Also Published As

Publication number Publication date
BR0002705B1 (pt) 2012-08-07
US6751358B1 (en) 2004-06-15

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Legal Events

Date Code Title Description
B06A Notification to applicant to reply to the report for non-patentability or inadequacy of the application [chapter 6.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B09W Decision of grant: rectification

Free format text: REFERENTE A RPI 2121 DE 30/08/2011 CODIGO DE DESPACHO 9.1

B16A Patent or certificate of addition of invention granted

Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 07/08/2012, OBSERVADAS AS CONDICOES LEGAIS. "NO NUMERO DA PRIMEIRA PAGINA DO RELATORIO DESCRITIVO, ONDE SE LE: "1/11", LEIA-SE: "1/9"

B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

Free format text: REFERENTE A 16A ANUIDADE.

B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)

Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2385 DE 20-09-2016 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.