BR9404971A - Método para a quantificação de valores de pixels - Google Patents

Método para a quantificação de valores de pixels

Info

Publication number
BR9404971A
BR9404971A BR9404971A BR9404971A BR9404971A BR 9404971 A BR9404971 A BR 9404971A BR 9404971 A BR9404971 A BR 9404971A BR 9404971 A BR9404971 A BR 9404971A BR 9404971 A BR9404971 A BR 9404971A
Authority
BR
Brazil
Prior art keywords
pixel values
quantifying
quantifying pixel
values
pixel
Prior art date
Application number
BR9404971A
Other languages
English (en)
Inventor
Jeng-Nan Shiau
Zhigang Fan
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 BR9404971A publication Critical patent/BR9404971A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image Processing (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Facsimile Image Signal Circuits (AREA)
BR9404971A 1993-12-15 1994-12-13 Método para a quantificação de valores de pixels BR9404971A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/167,758 US5353127A (en) 1993-12-15 1993-12-15 Method for quantization gray level pixel data with extended distribution set

Publications (1)

Publication Number Publication Date
BR9404971A true BR9404971A (pt) 1995-08-08

Family

ID=22608706

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9404971A BR9404971A (pt) 1993-12-15 1994-12-13 Método para a quantificação de valores de pixels

Country Status (5)

Country Link
US (1) US5353127A (pt)
EP (1) EP0659012B1 (pt)
JP (1) JPH08101912A (pt)
BR (1) BR9404971A (pt)
DE (1) DE69418684T2 (pt)

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US5508822A (en) * 1992-10-15 1996-04-16 Digital Equipment Corporation Imaging system with multilevel dithering using single memory
JP3171993B2 (ja) * 1993-05-24 2001-06-04 キヤノン株式会社 画像処理方法及び装置
US5710836A (en) 1994-12-01 1998-01-20 Xerox Corporation System and apparatus for tonal reproduction adjustment in an error diffusion process
US5565994A (en) * 1994-12-06 1996-10-15 Xerox Corporation Multiple separation error diffusion, with cross separation correlation control for color images
AUPN741396A0 (en) * 1996-01-05 1996-01-25 Canon Aptex Inc Geometrically reducing mask error diffusion
AUPN743096A0 (en) * 1996-01-05 1996-02-01 Canon Kabushiki Kaisha Force field halftoning
US5835238A (en) * 1996-06-27 1998-11-10 Xerox Corporation Phantom level edge enhanced error diffusion
US5784496A (en) * 1996-09-26 1998-07-21 Xerox Corporation Error sum method and apparatus for intercolor separation control in a printing system
US5748785A (en) * 1996-09-26 1998-05-05 Xerox Corporation Inter-separation color image processing using error diffusion
US6072591A (en) * 1997-06-30 2000-06-06 Xerox Corporation Sum and difference error diffusion
US6061143A (en) 1997-09-23 2000-05-09 Xerox Corporation System and apparatus for single subpixel elimination with local error compensation in an high addressable error diffusion process
US5946455A (en) * 1997-10-02 1999-08-31 International Business Machines Corporation Model based error diffusion with correction propagation
US6141114A (en) * 1998-01-08 2000-10-31 Xerox Corporation Edge enhanced error diffusion with artifact correction in areas of highlights and shadows
US9848105B1 (en) 1998-05-18 2017-12-19 Xerox Corporation Reducing smear and slow response artifacts in vector error diffusion
US6160921A (en) * 1998-06-15 2000-12-12 Apple Computer, Inc. Error diffusion with homogeneous distribution in highlight and shadow regions
US6356654B1 (en) 1998-12-23 2002-03-12 Xerox Corporation Systems and methods for template matching of multicolored images
US6343159B1 (en) 1998-12-23 2002-01-29 Xerox Corporation Method and apparatus for modeling and reconstruction of halftoned images
US6301397B1 (en) 1998-12-30 2001-10-09 Xerox Corporation Systems and methods for rotating high addressability images
US6381372B1 (en) 1998-12-30 2002-04-30 Xerox Corporation Systems and methods for designing image processing filters using templates
US6363177B1 (en) 1998-12-30 2002-03-26 Xerox Corporation Systems and methods for rotating high addressability images
AU744628B2 (en) * 1999-06-23 2002-02-28 Canon Kabushiki Kaisha One line store geometrically reducing influence halftoning
FR2798494B1 (fr) * 1999-09-14 2002-03-29 St Microelectronics Sa Distribution d'erreur pour l'approximation de la couleur des pixels d'une image numerique
US6753978B1 (en) 1999-09-22 2004-06-22 Sharp Laboratories Of America, Inc. Higher order error diffusion of digital halftoning
JP2001128003A (ja) * 1999-10-29 2001-05-11 Matsushita Electric Ind Co Ltd 画像二値化方法
US6608700B1 (en) 1999-11-24 2003-08-19 Xerox Corporation Removal of error diffusion artifacts with alternating distribution weights
US6707576B1 (en) 1999-12-02 2004-03-16 Sharp Laboratories Of America, Inc. Noise modulation error diffusion of digital halftoning
US6678073B1 (en) 2000-02-08 2004-01-13 Oak Technology, Inc. Error diffusion method and apparatus
AUPR234700A0 (en) * 2000-12-29 2001-01-25 Canon Kabushiki Kaisha Error diffusion using next scanline error impulse response
US6995872B2 (en) 2001-12-14 2006-02-07 Xerox Corporation Reduced-buffer error diffusion
US7155052B2 (en) * 2002-06-10 2006-12-26 Tokyo Seimitsu (Israel) Ltd Method for pattern inspection
US7486834B2 (en) * 2005-01-18 2009-02-03 Lexmark International, Inc. System and method for dynamically shifting error diffusion data
US7460727B2 (en) * 2005-06-30 2008-12-02 Xerox Corporation Error diffusion method and hardware architecture
US7565027B2 (en) * 2005-10-07 2009-07-21 Xerox Corporation Countdown stamp error diffusion
JP5219591B2 (ja) * 2008-04-02 2013-06-26 キヤノン株式会社 画像処理装置およびその方法
JP2009253472A (ja) * 2008-04-02 2009-10-29 Canon Inc 画像処理装置およびその方法
US9083912B2 (en) 2012-11-06 2015-07-14 Xerox Corporation Method and apparatus for enabling parallel processing of pixels in an image
JP6569755B1 (ja) * 2018-03-06 2019-09-04 Tdk株式会社 ニューラルネットワーク装置、信号生成方法およびプログラム
US11302234B2 (en) * 2018-08-07 2022-04-12 Facebook Technologies, Llc Error correction for display device
US10847075B1 (en) 2019-04-10 2020-11-24 Facebook Technologies, Llc Error correction for display device
US12499806B2 (en) * 2022-10-24 2025-12-16 Apple Inc. Multi-least significant bit (LSB) dithering systems and methods
EP4618528A1 (de) 2024-03-13 2025-09-17 Akzenta Paneele + Profile GmbH Verfahren zur farbkorrektur in einem digitaldruckverfahren

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Publication number Priority date Publication date Assignee Title
DE3067060D1 (en) * 1979-12-20 1984-04-19 Cambridge Consultants Apparatus and method for generating a dispersed dot half tone picture from a continuous tone picture
JPS6152073A (ja) * 1984-08-21 1986-03-14 Seiko Epson Corp 画像処理方法
JPS6163893A (ja) * 1984-09-06 1986-04-02 株式会社日立製作所 デイスプレイ装置における擬似中間調画像の表示方法
DE3752022T2 (de) * 1986-12-19 1997-06-26 Matsushita Electric Ind Co Ltd Gerät zur Verarbeitung von Signalen für die Anzeige von Bildern mit zwei Pegeln
US4955065A (en) * 1987-03-17 1990-09-04 Digital Equipment Corporation System for producing dithered images from continuous-tone image data
ATE75571T1 (de) * 1987-03-17 1992-05-15 Digital Equipment Corp System zur erzeugung von zitterbildern aus tonkontinuierlichen bilddaten.
WO1989006080A1 (en) * 1987-12-17 1989-06-29 Eastman Kodak Company Image processor with error diffusion modulated threshold matrix
US4924322A (en) * 1988-03-18 1990-05-08 Matsushita Electric Industrial Co., Ltd. Bi-level image display signal processing apparatus
US5045952A (en) * 1989-08-21 1991-09-03 Xerox Corporation Method for edge enhanced error diffusion
EP0415661B1 (en) * 1989-08-30 1996-07-03 Kabushiki Kaisha Toshiba Image processing apparatus
BE1003276A3 (nl) * 1990-01-09 1992-02-11 Aesthedes N V Werkwijze en inrichting voor het genereren van een lithografisch raster.
US5055942A (en) * 1990-02-06 1991-10-08 Levien Raphael L Photographic image reproduction device using digital halftoning to screen images allowing adjustable coarseness
US5226094A (en) * 1990-10-19 1993-07-06 Xerox Corporation Method for making image conversions with error diffusion
US5226096A (en) * 1991-10-11 1993-07-06 Xerox Corporation Digital halftoning with selectively applied dot-to-dot error diffusion
US5243443A (en) * 1991-12-06 1993-09-07 Xerox Corporation Halftoning with error feedback and image dependent enhancement
US5245678A (en) * 1991-12-20 1993-09-14 Xerox Corporation Image conversion with lossy adaptive error diffusion

Also Published As

Publication number Publication date
US5353127A (en) 1994-10-04
DE69418684D1 (de) 1999-07-01
EP0659012B1 (en) 1999-05-26
JPH08101912A (ja) 1996-04-16
EP0659012A2 (en) 1995-06-21
EP0659012A3 (en) 1995-12-06
DE69418684T2 (de) 1999-10-07

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Legal Events

Date Code Title Description
FF Decision: intention to grant
FG9A Patent or certificate of addition granted
B24H Lapse because of non-payment of annual fees (definitively: art 78 iv lpi)
B24F Patent annual fee: publication cancelled

Free format text: ANULADA A PUBLICACAO CODIGO 24.8 NA RPI NO 2277 DE 26/08/2014 POR TER SIDO INDEVIDA.

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

Free format text: REFERENTE AS 17A, 18A, 19A E 20A ANUIDADES.

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 2606 DE 15-12-2020 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.