ATE191821T1 - Bildverarbeitungsverfahren und -gerät - Google Patents

Bildverarbeitungsverfahren und -gerät

Info

Publication number
ATE191821T1
ATE191821T1 AT95300317T AT95300317T ATE191821T1 AT E191821 T1 ATE191821 T1 AT E191821T1 AT 95300317 T AT95300317 T AT 95300317T AT 95300317 T AT95300317 T AT 95300317T AT E191821 T1 ATE191821 T1 AT E191821T1
Authority
AT
Austria
Prior art keywords
image
image processing
processing method
data
distributing
Prior art date
Application number
AT95300317T
Other languages
English (en)
Inventor
Takatoshi Ohta
Koji Yamada
Original Assignee
Canon Kk
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
Priority claimed from JP00464794A external-priority patent/JP3200274B2/ja
Priority claimed from JP16209494A external-priority patent/JP3200287B2/ja
Application filed by Canon Kk filed Critical Canon Kk
Application granted granted Critical
Publication of ATE191821T1 publication Critical patent/ATE191821T1/de

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)
  • Facsimile Image Signal Circuits (AREA)
  • Image Analysis (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
AT95300317T 1994-01-20 1995-01-19 Bildverarbeitungsverfahren und -gerät ATE191821T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP00464794A JP3200274B2 (ja) 1994-01-20 1994-01-20 画像処理方法及び装置
JP16209494A JP3200287B2 (ja) 1994-07-14 1994-07-14 画像処理方法及び装置

Publications (1)

Publication Number Publication Date
ATE191821T1 true ATE191821T1 (de) 2000-04-15

Family

ID=26338462

Family Applications (1)

Application Number Title Priority Date Filing Date
AT95300317T ATE191821T1 (de) 1994-01-20 1995-01-19 Bildverarbeitungsverfahren und -gerät

Country Status (4)

Country Link
US (1) US5621542A (de)
EP (1) EP0664643B1 (de)
AT (1) ATE191821T1 (de)
DE (1) DE69516193T2 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0983790A (ja) * 1995-09-07 1997-03-28 Canon Inc 二値化処理装置
US6282323B1 (en) * 1996-12-04 2001-08-28 Canon Kabushiki Kaisha Image processing method and apparatus
JP3959698B2 (ja) * 1998-02-24 2007-08-15 ソニー株式会社 画像処理方法および装置
JP2000022951A (ja) * 1998-07-02 2000-01-21 Canon Inc 画像処理方法及び装置
US6678073B1 (en) * 2000-02-08 2004-01-13 Oak Technology, Inc. Error diffusion method and apparatus
AUPQ766300A0 (en) * 2000-05-22 2000-06-15 Canon Kabushiki Kaisha Defective nozzle compensation
US7319549B2 (en) 2003-03-27 2008-01-15 Lexmark International, Inc. Multiple weight error diffusion
JP4065532B2 (ja) * 2003-05-09 2008-03-26 キヤノン株式会社 画像処理装置、画像処理方法およびプログラム
US8248660B2 (en) * 2007-12-14 2012-08-21 Qualcomm Incorporated Efficient diffusion dithering using dyadic rationals
JP5241429B2 (ja) * 2008-10-24 2013-07-17 キヤノン株式会社 画像形成装置およびその制御方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58215169A (ja) * 1982-06-08 1983-12-14 Konishiroku Photo Ind Co Ltd 画信号の２値化装置
JPS6152073A (ja) * 1984-08-21 1986-03-14 Seiko Epson Corp 画像処理方法
JPS61293068A (ja) * 1985-06-20 1986-12-23 Seiko Epson Corp 画像処理方法
JPS6335074A (ja) * 1986-07-30 1988-02-15 Hitachi Ltd 画像処理方法
US4680645A (en) * 1986-08-25 1987-07-14 Hewlett-Packard Company Method for rendering gray scale images with variable dot sizes
DE3751957T2 (de) * 1986-12-19 1997-04-03 Matsushita Electric Ind Co Ltd Gerät zur Verarbeitung von Signalen für die Anzeige von Bildern mit zwei Pegeln
JPH0681257B2 (ja) * 1986-12-19 1994-10-12 松下電器産業株式会社 画像信号処理装置
US5201013A (en) * 1989-04-24 1993-04-06 Ezel, Inc. Dither processing method
JPH04119763A (ja) * 1990-09-11 1992-04-21 Toshiba Corp 画像処理装置
US5337160A (en) * 1992-07-01 1994-08-09 Hewlett-Packard Error diffusion processor and method for converting a grey scale pixel image to a binary value pixel image
JP3603906B2 (ja) * 1994-04-15 2004-12-22 富士写真フイルム株式会社 画像信号２値化処理装置および方法

Also Published As

Publication number Publication date
DE69516193T2 (de) 2000-11-23
EP0664643A2 (de) 1995-07-26
EP0664643B1 (de) 2000-04-12
US5621542A (en) 1997-04-15
DE69516193D1 (de) 2000-05-18
EP0664643A3 (de) 1995-12-06

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Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties