DE69026846D1 - Bildverarbeitungsvorrichtung - Google Patents

Bildverarbeitungsvorrichtung

Info

Publication number
DE69026846D1
DE69026846D1 DE69026846T DE69026846T DE69026846D1 DE 69026846 D1 DE69026846 D1 DE 69026846D1 DE 69026846 T DE69026846 T DE 69026846T DE 69026846 T DE69026846 T DE 69026846T DE 69026846 D1 DE69026846 D1 DE 69026846D1
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
DE69026846T
Other languages
English (en)
Other versions
DE69026846T2 (de
Inventor
Yasuhiro Yamada
Hiroshi Tanioka
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 JP1031408A external-priority patent/JP2810395B2/ja
Priority claimed from JP1031409A external-priority patent/JP2683085B2/ja
Priority claimed from JP1031404A external-priority patent/JPH02210959A/ja
Priority claimed from JP1031411A external-priority patent/JP2810396B2/ja
Priority claimed from JP1031405A external-priority patent/JP2683084B2/ja
Priority claimed from JP1284879A external-priority patent/JPH03147480A/ja
Application filed by Canon Inc filed Critical Canon Inc
Publication of DE69026846D1 publication Critical patent/DE69026846D1/de
Application granted granted Critical
Publication of DE69026846T2 publication Critical patent/DE69026846T2/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
    • H04N1/40087—Multi-toning, i.e. converting a continuous-tone signal for reproduction with more than two discrete brightnesses or optical densities, e.g. dots of grey and black inks on white paper
    • 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
DE1990626846 1989-02-10 1990-02-12 Bildverarbeitungsvorrichtung Expired - Fee Related DE69026846T2 (de)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP1031408A JP2810395B2 (ja) 1989-02-10 1989-02-10 画像処理装置
JP1031409A JP2683085B2 (ja) 1989-02-10 1989-02-10 画像処理装置
JP1031404A JPH02210959A (ja) 1989-02-10 1989-02-10 画像処理装置
JP1031411A JP2810396B2 (ja) 1989-02-10 1989-02-10 画像処理装置
JP1031405A JP2683084B2 (ja) 1989-02-10 1989-02-10 画像処理装置
JP1284879A JPH03147480A (ja) 1989-11-02 1989-11-02 画像処理装置

Publications (2)

Publication Number Publication Date
DE69026846D1 true DE69026846D1 (de) 1996-06-13
DE69026846T2 DE69026846T2 (de) 1997-01-09

Family

ID=27549596

Family Applications (2)

Application Number Title Priority Date Filing Date
DE1990627870 Expired - Fee Related DE69027870T2 (de) 1989-02-10 1990-02-12 Bildverarbeitungsgerät
DE1990626846 Expired - Fee Related DE69026846T2 (de) 1989-02-10 1990-02-12 Bildverarbeitungsvorrichtung

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE1990627870 Expired - Fee Related DE69027870T2 (de) 1989-02-10 1990-02-12 Bildverarbeitungsgerät

Country Status (2)

Country Link
EP (2) EP0382580B1 (de)
DE (2) DE69027870T2 (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0395404B1 (de) * 1989-04-27 1999-12-01 Canon Kabushiki Kaisha Bildverarbeitungsvorrichtung
US5515180A (en) * 1992-11-24 1996-05-07 Sharp Kabushiki Kaisha Image processing device
EP0670654B1 (de) * 1994-03-02 2001-04-18 Hewlett-Packard Company, A Delaware Corporation Erzeugung von Mehrfachtonbildern
EP0670653B1 (de) * 1994-03-02 2001-07-11 Hewlett-Packard Company, A Delaware Corporation Erzeugung von Mehrfachtonbildern
DE69518578T2 (de) * 1994-05-18 2001-04-26 Sharp Kk Kartenartige Kamera mit Bildverarbeitungsfunktion
EP0712235B1 (de) * 1994-11-08 2002-05-02 Xerox Corporation Halbtonrasterung von Bildelementpaaren für einen Drucker mit hoher Schärfe
EP0893910A1 (de) * 1997-07-21 1999-01-27 SYFAL S.p.A. Verfahren zur Reproduktion von hochauflösenden Bildern
US7268919B2 (en) 2002-01-17 2007-09-11 Seiko Epson Corporation Image data processing apparatus, method, and program that diffuses gradiation error for each pixel in target block

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57104369A (en) * 1980-12-22 1982-06-29 Toshiba Corp Binary device for picture with contrast
JPS60157375A (ja) * 1983-12-21 1985-08-17 Fuji Xerox Co Ltd 中間調表現方式
JPS60214160A (ja) * 1984-04-09 1985-10-26 Ricoh Co Ltd 画信号２値化方式
US4692811A (en) * 1984-07-25 1987-09-08 Matsushita Electric Industrial Co., Ltd. Apparatus for processing image signal
EP0248616A3 (de) * 1986-06-02 1990-03-07 Kabushiki Kaisha Toshiba Bilddruckgerät
DE3854335T2 (de) * 1987-02-17 1996-02-08 Sharp Kk Bildsignalbinärcodierer.

Also Published As

Publication number Publication date
EP0382580A3 (de) 1991-10-02
DE69027870T2 (de) 1997-01-09
EP0382581B1 (de) 1996-05-08
EP0382581A3 (de) 1991-10-16
EP0382580A2 (de) 1990-08-16
DE69027870D1 (de) 1996-08-29
EP0382580B1 (de) 1996-07-24
EP0382581A2 (de) 1990-08-16
DE69026846T2 (de) 1997-01-09

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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