DE69712572D1 - Fehlerdiffusionsverfahren mit symmetrischer Verbesserung - Google Patents

Fehlerdiffusionsverfahren mit symmetrischer Verbesserung

Info

Publication number
DE69712572D1
DE69712572D1 DE69712572T DE69712572T DE69712572D1 DE 69712572 D1 DE69712572 D1 DE 69712572D1 DE 69712572 T DE69712572 T DE 69712572T DE 69712572 T DE69712572 T DE 69712572T DE 69712572 D1 DE69712572 D1 DE 69712572D1
Authority
DE
Germany
Prior art keywords
error diffusion
diffusion method
symmetrical
improvement
symmetrical improvement
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
DE69712572T
Other languages
English (en)
Other versions
DE69712572T2 (de
Inventor
Keith T Knox
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xerox Corp
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 DE69712572D1 publication Critical patent/DE69712572D1/de
Application granted granted Critical
Publication of DE69712572T2 publication Critical patent/DE69712572T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Dot-Matrix Printers And Others (AREA)
DE69712572T 1996-06-27 1997-06-27 Fehlerdiffusionsverfahren mit symmetrischer Verbesserung Expired - Lifetime DE69712572T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/671,479 US5668638A (en) 1996-06-27 1996-06-27 Error diffusion method with symmetric enhancement

Publications (2)

Publication Number Publication Date
DE69712572D1 true DE69712572D1 (de) 2002-06-20
DE69712572T2 DE69712572T2 (de) 2002-09-26

Family

ID=24694696

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69712572T Expired - Lifetime DE69712572T2 (de) 1996-06-27 1997-06-27 Fehlerdiffusionsverfahren mit symmetrischer Verbesserung

Country Status (4)

Country Link
US (1) US5668638A (de)
EP (1) EP0817465B1 (de)
JP (1) JP3973734B2 (de)
DE (1) DE69712572T2 (de)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6011878A (en) * 1996-09-26 2000-01-04 Canon Kabushiki Kaisha Image processing method and apparatus
KR100251551B1 (ko) * 1997-03-06 2000-04-15 구자홍 디지탈영상양자화를위한비인과성오차확산계수의위치및결정방법
US6006011A (en) * 1997-09-03 1999-12-21 International Business Machines Corporation Target patterns controlled error management
US5991513A (en) * 1997-09-30 1999-11-23 Levien; Raphael L Method and apparatus for suppressing moire patterns
JP3747643B2 (ja) * 1998-08-07 2006-02-22 コニカミノルタホールディングス株式会社 傾き補正装置及び画像読取装置
JP4053185B2 (ja) * 1999-06-22 2008-02-27 富士フイルム株式会社 画像処理方法および装置
US6753978B1 (en) 1999-09-22 2004-06-22 Sharp Laboratories Of America, Inc. Higher order error diffusion of digital halftoning
DE60001143T2 (de) 1999-10-29 2003-10-16 Ricoh Kk Bildverarbeitungsvorrichtung und -verfahren und Aufzeichnungsmedium
US6614556B1 (en) 1999-11-22 2003-09-02 Sindoricoh Co., Ltd. Apparatus for quantizing a digital image by using an error diffusion coefficient and threshold modulation in zigzag quantization
US6707576B1 (en) 1999-12-02 2004-03-16 Sharp Laboratories Of America, Inc. Noise modulation error diffusion of digital halftoning
US6999202B2 (en) 2001-03-27 2006-02-14 Polaroid Corporation Method for generating a halftone of a source image
US6937365B2 (en) * 2001-05-30 2005-08-30 Polaroid Corporation Rendering images utilizing adaptive error diffusion
US6906736B2 (en) 2002-02-19 2005-06-14 Polaroid Corporation Technique for printing a color image
JP4095423B2 (ja) * 2002-12-06 2008-06-04 キヤノン株式会社 画像処理装置、画像データ処理方法、記憶媒体、プログラム
US7283666B2 (en) 2003-02-27 2007-10-16 Saquib Suhail S Digital image exposure correction
US8773685B2 (en) 2003-07-01 2014-07-08 Intellectual Ventures I Llc High-speed digital image printing system
US7265872B2 (en) * 2003-10-15 2007-09-04 International Business Machines Corporation Error diffusion with averaged directional biases
CN101052947A (zh) 2004-11-03 2007-10-10 皇家飞利浦电子股份有限公司 支持simd指令的可编程数据处理电路
US7639887B2 (en) 2004-12-14 2009-12-29 Intel Corporation Error diffusion-based image processing
US7731342B2 (en) * 2006-07-21 2010-06-08 Xerox Corporation Image correction system and method for a direct marking system

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4051536A (en) * 1975-03-14 1977-09-27 Xerox Corporation Electronic halftone imaging system
US4149194A (en) * 1977-07-07 1979-04-10 Xerox Corporation Variable angle electronic halftone screening
JPS5497432A (en) * 1978-01-18 1979-08-01 Ricoh Co Ltd Image density control method
JPS568140A (en) * 1979-07-02 1981-01-27 Dainippon Screen Mfg Co Ltd Emphasizing method of sharpness in image scanning and recording apparatus
US4633327A (en) * 1983-11-10 1986-12-30 Xerox Corporation Enhancement halftoning
US4625222A (en) * 1984-05-17 1986-11-25 International Business Machines Corporation Interacting print enhancement techniques
US4709250A (en) * 1985-02-19 1987-11-24 Canon Kabushiki Kaisha Image forming apparatus
JPS61230571A (ja) * 1985-04-05 1986-10-14 Dainippon Screen Mfg Co Ltd 画像走査装置
NL8501956A (nl) * 1985-07-09 1987-02-02 Philips Nv Beeldherstelschakeling.
US4693593A (en) * 1986-06-24 1987-09-15 Eastman Kodak Company Electrographic process control
US4724461A (en) * 1987-04-06 1988-02-09 Eastman Kodak Company Dynamic process control for electrostatographic machines
US5014333A (en) * 1988-07-21 1991-05-07 Eastman Kodak Company Image processor with smooth transitioning between dither and diffusion processes
US5045952A (en) * 1989-08-21 1991-09-03 Xerox Corporation Method for edge enhanced error diffusion
US5055942A (en) * 1990-02-06 1991-10-08 Levien Raphael L Photographic image reproduction device using digital halftoning to screen images allowing adjustable coarseness
US5208684A (en) * 1990-04-26 1993-05-04 Fujitsu Limited Half-tone image processing system
JP2500834B2 (ja) * 1991-09-05 1996-05-29 ゼロックス コーポレイション 画素値の量子化方法及び装置
US5521989A (en) * 1993-08-05 1996-05-28 Xerox Corporation Balanced error diffusion system
US5363209A (en) * 1993-11-05 1994-11-08 Xerox Corporation Image-dependent sharpness enhancement
US5467201A (en) * 1994-05-31 1995-11-14 Xerox Corporation Iterative error diffusion system
US5535019A (en) * 1994-09-15 1996-07-09 Xerox Corporation Error diffusion halftoning with homogeneous response in high/low intensity image regions

Also Published As

Publication number Publication date
EP0817465B1 (de) 2002-05-15
JP3973734B2 (ja) 2007-09-12
JPH1075362A (ja) 1998-03-17
EP0817465A1 (de) 1998-01-07
DE69712572T2 (de) 2002-09-26
US5668638A (en) 1997-09-16

Similar Documents

Publication Publication Date Title
DE69712572T2 (de) Fehlerdiffusionsverfahren mit symmetrischer Verbesserung
DE69321660D1 (de) Diffusionsverbindungsverfahren
DE69609509D1 (de) Trelliskodierung mit verminderter fehlerverbreitung
DE69714879D1 (de) Verbindungssystem mit zugehörigem Verfahren
DE69806137T2 (de) Silizium mit niedriger defektdichte
DE69102600D1 (de) Diffusionsschweissrepariertechnik.
DE69428061T2 (de) Paralleles Fehlerdiffusionsverfahren und -gerät
DE69713026T2 (de) Positioniervorrichtung
DE69415180T2 (de) Paralleles Fehlerdiffusionsverfahren und -gerät
DE69731933D1 (de) Aufspannvorrichtung
DE69836171D1 (de) Fehlerdiffusion mit Summen und Differenzbildung
DE69416202D1 (de) Bildelementfehlerdiffusionsverfahren
DE69731258D1 (de) Randverbesserte Fehlerdiffusion
ATA216996A (de) Dreiwegeventil
DE59707845D1 (de) Kryostatmikrotom
DE69530002D1 (de) Spektrometer mit entladungsbegrenzenden mitteln
DE69713655D1 (de) Drehbucheditor
NL1007054A1 (nl) Foutcorrectiemethode en -inrichting.
DE69734088D1 (de) Zentriervorrichtung
NL1007004A1 (nl) Foutcorrectiemethode en inrichting.
DE69708229T2 (de) Muster-Herstellungsverfahren
DE69717671D1 (de) Transportvorrichtung
DE69523111T2 (de) Mehrplattenspieler
DE69713656T2 (de) Zeicheneditor
DE69714970D1 (de) Hydroismerisierung mit verminderten hydrokracken

Legal Events

Date Code Title Description
8364 No opposition during term of opposition