DE69216256T2 - Bildverarbeitungsgerät - Google Patents

Bildverarbeitungsgerät

Info

Publication number
DE69216256T2
DE69216256T2 DE69216256T DE69216256T DE69216256T2 DE 69216256 T2 DE69216256 T2 DE 69216256T2 DE 69216256 T DE69216256 T DE 69216256T DE 69216256 T DE69216256 T DE 69216256T DE 69216256 T2 DE69216256 T2 DE 69216256T2
Authority
DE
Germany
Prior art keywords
image processing
processing device
image
processing
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 - Fee Related
Application number
DE69216256T
Other languages
English (en)
Other versions
DE69216256D1 (de
Inventor
Yuichi Bannai
Toshihiko Sato
Kunihiro Yamamoto
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.)
Canon Inc
Original Assignee
Canon Inc
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 JP3007815A external-priority patent/JPH04240970A/ja
Priority claimed from JP03007814A external-priority patent/JP3113682B2/ja
Application filed by Canon Inc filed Critical Canon Inc
Publication of DE69216256D1 publication Critical patent/DE69216256D1/de
Application granted granted Critical
Publication of DE69216256T2 publication Critical patent/DE69216256T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
DE69216256T 1991-01-25 1992-01-22 Bildverarbeitungsgerät Expired - Fee Related DE69216256T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3007815A JPH04240970A (ja) 1991-01-25 1991-01-25 画像処理装置
JP03007814A JP3113682B2 (ja) 1991-01-25 1991-01-25 画像処理装置

Publications (2)

Publication Number Publication Date
DE69216256D1 DE69216256D1 (de) 1997-02-13
DE69216256T2 true DE69216256T2 (de) 1997-05-15

Family

ID=26342187

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69216256T Expired - Fee Related DE69216256T2 (de) 1991-01-25 1992-01-22 Bildverarbeitungsgerät

Country Status (3)

Country Link
US (1) US5502495A (de)
EP (1) EP0496600B1 (de)
DE (1) DE69216256T2 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0626778A1 (de) * 1993-04-26 1994-11-30 BULL HN INFORMATION SYSTEMS ITALIA S.p.A. Verfahren und Gerät zur verbesserten Grauwiedergabe in zweitondigitalisierten Bildern
JP3305495B2 (ja) * 1994-04-28 2002-07-22 キヤノン株式会社 画像処理装置および画像処理方法
US5734753A (en) * 1995-08-31 1998-03-31 Hewlett-Packard Company Partial pixel encoding and decoding method
US5655061A (en) * 1995-11-15 1997-08-05 Xerox Corporation System and method for providing a high addressable printing system
JP3476331B2 (ja) * 1997-03-14 2003-12-10 株式会社東芝 画像処理装置および画像処理方法
US6360006B1 (en) 1998-09-29 2002-03-19 Canon Kabushiki Kaisha Color block selection
JP4248633B2 (ja) * 1998-10-16 2009-04-02 パナソニック株式会社 画像読み取り装置およびディジタル複写機
US6226636B1 (en) * 1998-11-20 2001-05-01 Philips Electronics North America Corp. System for retrieving images using a database
US6389417B1 (en) * 1999-06-29 2002-05-14 Samsung Electronics Co., Ltd. Method and apparatus for searching a digital image
JP3676948B2 (ja) * 1999-07-07 2005-07-27 アルプス電気株式会社 画素数変換回路及びこれを用いた画像表示装置
JP5780796B2 (ja) * 2011-03-24 2015-09-16 オリンパス株式会社 データ処理装置およびデータ処理方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61203785A (ja) * 1985-03-07 1986-09-09 Dainippon Screen Mfg Co Ltd ２値画像デ−タの平滑化処理方法及びその装置
JPH0777418B2 (ja) * 1986-03-17 1995-08-16 株式会社東芝 画像処理装置
US4876610A (en) * 1986-12-25 1989-10-24 Canon Kabushiki Kaisha Image processing apparatus with binarization-error dispersal
US4878125A (en) * 1987-01-08 1989-10-31 Canon Kabushiki Kaisha Method and apparatus for image processing with fed-back error correction
US5008950A (en) * 1987-01-22 1991-04-16 Canon Kabushiki Kaisha Image processing method and apparatus for error-dispersion digitization without moire or spurious stripe formation
US4958236A (en) * 1987-06-11 1990-09-18 Canon Kabushiki Kaisha Image processing method and apparatus therefor
US4975786A (en) * 1987-12-28 1990-12-04 Canon Kabushiki Kaisha Image processing method and apparatus with error diffusion capability
US4873577A (en) * 1988-01-22 1989-10-10 American Telephone And Telegraph Company Edge decomposition for the transmission of high resolution facsimile images
JP2683014B2 (ja) * 1988-03-08 1997-11-26 キヤノン株式会社 画像処理方法及び装置
JPH02100463A (ja) * 1988-10-06 1990-04-12 Fuji Xerox Co Ltd 中間調画像形成装置

Also Published As

Publication number Publication date
US5502495A (en) 1996-03-26
EP0496600A2 (de) 1992-07-29
DE69216256D1 (de) 1997-02-13
EP0496600B1 (de) 1997-01-02
EP0496600A3 (en) 1992-12-02

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee