BR0104894A - Conversor de cores para preto e branco - Google Patents

Conversor de cores para preto e branco

Info

Publication number
BR0104894A
BR0104894A BR0104894-5A BR0104894A BR0104894A BR 0104894 A BR0104894 A BR 0104894A BR 0104894 A BR0104894 A BR 0104894A BR 0104894 A BR0104894 A BR 0104894A
Authority
BR
Brazil
Prior art keywords
continuously variable
color
image
filtering tool
variable filtering
Prior art date
Application number
BR0104894-5A
Other languages
English (en)
Inventor
Ying-Wei Lin
Jeng Nan Shiau
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 BR0104894A publication Critical patent/BR0104894A/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
    • H04N1/40012—Conversion of colour to monochrome

Landscapes

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

Abstract

Patente de Invenção: "CONVERSOR DE CORES PARA PRETO E BRANCO". Ferramenta de filtração continuamente variável é usada para gerar um padrão de textura única para cada cor em uma imagem multicolorida. A ferramenta de filtração continuamente variável permite uma versão de corante único da imagem á ser gerada com menos informação perdida do que tipicamente sofrido no processo de transformação de multicolorido em cor única. A ferramenta de filtração continuamente variável é gerada pela mistura de padrões de um conjunto de telas de referência S~ 1~ - S~ 6~. As telas de referência S, - S6 estão associadas com cores de referência selecionadas, por exemplo, em um espaço de cores independente de máquina. Uma tela calculada é gerada através de uma mistura ponderada de telas de referência S~ 1~ - S~ 6~ localizadas perto da cor arbitrária no espaço de cores independente de máquina. As telas consistem em matrizes de valores limite 505. Cada valor limite é associado com uma posição de ponto e um pixel de imagem. Onde um valor de pixel excede o valor limite associado, providências são tomadas para colocar uma marca na posição de ponto associada. Um processador de imagens 1210 operativo para realizar o método compreende um gerador de ferramenta de filtração continuamente variável 1214. Uma concretização do processador de imagens inclui um dispositivo de armazenamento de telas de referência 1218 e um misturador de telas 1222.
BR0104894-5A 2000-10-30 2001-10-30 Conversor de cores para preto e branco BR0104894A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/699,820 US7009739B1 (en) 2000-10-30 2000-10-30 Color to black and white converter

Publications (1)

Publication Number Publication Date
BR0104894A true BR0104894A (pt) 2002-06-25

Family

ID=24811043

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0104894-5A BR0104894A (pt) 2000-10-30 2001-10-30 Conversor de cores para preto e branco

Country Status (7)

Country Link
US (1) US7009739B1 (pt)
EP (1) EP1202559B1 (pt)
JP (1) JP4429558B2 (pt)
BR (1) BR0104894A (pt)
CA (1) CA2359600C (pt)
DE (1) DE60130614T2 (pt)
MX (1) MXPA01010996A (pt)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7545540B2 (en) * 2005-05-27 2009-06-09 Xerox Corporation Method and system for processing color image data
KR101090060B1 (ko) 2006-11-14 2011-12-07 삼성전자주식회사 그레이 이미지의 보정이 가능한 화상형성장치 및화상형성방법
KR101184899B1 (ko) * 2006-12-07 2012-09-20 삼성전자주식회사 이미지처리장치 및 이미지처리방법
EP2560363B1 (en) * 2011-08-17 2018-07-04 Seiko Epson Corporation Image processing device
JP5907473B2 (ja) * 2011-10-05 2016-04-26 富士ゼロックス株式会社 画像処理装置、画像処理システム及びプログラム
US8977046B2 (en) * 2012-02-13 2015-03-10 Seiko Epson Corporation Image processing device, image processing method, and storage medium storing image processing program with color to pattern correlation
JP5903927B2 (ja) * 2012-02-21 2016-04-13 セイコーエプソン株式会社 画像処理装置、画像処理方法、およびプログラム
JP6456021B2 (ja) * 2013-12-12 2019-01-23 キヤノン株式会社 画像処理装置、画像処理方法、プログラム
CN105628195A (zh) * 2014-10-31 2016-06-01 富泰华工业（深圳）有限公司 光源亮度检测系统及方法
CN112868067A (zh) * 2018-10-16 2021-05-28 皇家飞利浦有限公司 预警评分设计和其他评分

Family Cites Families (23)

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US4149194A (en) 1977-07-07 1979-04-10 Xerox Corporation Variable angle electronic halftone screening
US4458002A (en) * 1982-06-30 1984-07-03 Agfa-Gevaert, N.V. Method and materials for improving the color balance of photographic multicolor images using contact screen
US4903048A (en) 1988-11-28 1990-02-20 Xerox Corporation Simulated color imaging using only two different colorants/toners
DE69122639T2 (de) 1990-03-05 1997-02-27 Canon Kk Bildverarbeitungsverfahren und -vorrichtung
US5153576A (en) 1990-08-29 1992-10-06 Xerox Corporation Mapping of color images to black-and-white textured images
EP0529965A3 (en) 1991-08-23 1993-12-08 Levien Raphael L High speed screening of images
US5315406A (en) * 1991-09-03 1994-05-24 Levien Raphael L Screen generation for halftone screening of images using arbitrary distribution of transformed screen coordinates
US5291310A (en) * 1991-09-03 1994-03-01 Levien Raphael L Screen generation for halftone screening of images
US5917614A (en) * 1992-11-30 1999-06-29 Levien; Raphael L Method and apparatus for error diffusion screening of images with improved smoothness in highlight and shadow regions
US5680230A (en) 1993-09-09 1997-10-21 Canon Kabushiki Kaisha Image processing method and apparatus thereof
US5588093A (en) 1993-12-17 1996-12-24 Xerox Corporation Color mapping to preserve detail
US5625716A (en) * 1994-03-15 1997-04-29 Adobe Systems Incorporated Method for compensating for transfer characteristics of a printing system in a halftone screening process
US5598204A (en) 1994-03-25 1997-01-28 Xerox Corporation Image halftoning system capable of producing additional gradations
US5956157A (en) * 1994-12-08 1999-09-21 Eastman Kodak Company Method and apparatus for locally blending gray dot types of the same or different types to reproduce an image with gray level printing
US6463173B1 (en) 1995-10-30 2002-10-08 Hewlett-Packard Company System and method for histogram-based image contrast enhancement
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US6445465B1 (en) * 1997-10-02 2002-09-03 Pcc Artwork Systems Digital halftoning combining dot size modulation screen with dot frequency modulation screen within a single image
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Also Published As

Publication number Publication date
DE60130614D1 (de) 2007-11-08
US7009739B1 (en) 2006-03-07
JP4429558B2 (ja) 2010-03-10
DE60130614T2 (de) 2008-01-31
MXPA01010996A (es) 2002-07-09
JP2002204363A (ja) 2002-07-19
EP1202559A2 (en) 2002-05-02
EP1202559B1 (en) 2007-09-26
CA2359600A1 (en) 2002-04-30
CA2359600C (en) 2005-01-11
EP1202559A3 (en) 2003-11-05

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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]
B08F Application fees: application dismissed [chapter 8.6 patent gazette]

Free format text: REFERENTE A 14A ANUIDADE.

B11B Dismissal acc. art. 36, par 1 of ipl - no reply within 90 days to fullfil the necessary requirements