DE3439826C2 - - Google Patents

Info

Publication number
DE3439826C2
DE3439826C2 DE3439826A DE3439826A DE3439826C2 DE 3439826 C2 DE3439826 C2 DE 3439826C2 DE 3439826 A DE3439826 A DE 3439826A DE 3439826 A DE3439826 A DE 3439826A DE 3439826 C2 DE3439826 C2 DE 3439826C2
Authority
DE
Germany
Prior art keywords
signal
clock
image
processing
processing device
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
DE3439826A
Other languages
German (de)
English (en)
Other versions
DE3439826A1 (de
Inventor
Nao Yokohama Kanagawa Jp Nagashima
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 JP58206337A external-priority patent/JPS6097774A/ja
Priority claimed from JP58206338A external-priority patent/JPS6097776A/ja
Application filed by Canon Inc filed Critical Canon Inc
Publication of DE3439826A1 publication Critical patent/DE3439826A1/de
Application granted granted Critical
Publication of DE3439826C2 publication Critical patent/DE3439826C2/de
Granted 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
    • H04N1/387—Composing, repositioning or otherwise geometrically modifying originals
    • H04N1/393—Enlarging or reducing
    • H04N1/3935—Enlarging or reducing with modification of image resolution, i.e. determining the values of picture elements at new relative positions
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T3/00—Geometric image transformations in the plane of the image
    • G06T3/40—Scaling of whole images or parts thereof, e.g. expanding or contracting
    • 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
    • H04N1/4055—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a clustered dots or a size modulated halftone pattern

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Editing Of Facsimile Originals (AREA)
  • Image Processing (AREA)
DE19843439826 1983-11-01 1984-10-31 Bildverarbeitungsgeraet Granted DE3439826A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP58206337A JPS6097774A (ja) 1983-11-01 1983-11-01 画像処理装置
JP58206338A JPS6097776A (ja) 1983-11-01 1983-11-01 画像処理装置

Publications (2)

Publication Number Publication Date
DE3439826A1 DE3439826A1 (de) 1985-05-09
DE3439826C2 true DE3439826C2 (en, 2012) 1991-05-23

Family

ID=26515594

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19843439826 Granted DE3439826A1 (de) 1983-11-01 1984-10-31 Bildverarbeitungsgeraet

Country Status (3)

Country Link
US (1) US4701808A (en, 2012)
DE (1) DE3439826A1 (en, 2012)
GB (1) GB2151101B (en, 2012)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0744641B2 (ja) * 1983-06-06 1995-05-15 キヤノン株式会社 画像変倍処理装置
US5168369B1 (en) * 1985-05-22 1997-07-29 Minolta Camera Kk Image reader having electrical and optical means for varying magnification
US5195148A (en) * 1985-05-22 1993-03-16 Minolta Camera Kabushiki Kaisha Image reader having electrical and optical means for varying magnification
JPH06101780B2 (ja) * 1985-05-22 1994-12-12 ミノルタ株式会社 画像読取装置
US5263135A (en) * 1985-07-18 1993-11-16 Canon Kabushiki Kaisha Image processing apparatus
US4740818A (en) * 1985-12-16 1988-04-26 Eastman Kodak Company Electrophotographic reproduction apparatus and method with selective screening
DE3545157A1 (de) * 1985-12-20 1987-06-25 Philips Patentverwaltung Verfahren und schaltungsanordnung zur aufloesungsumwandlung von binaeren pseudo-halbtonbildern
US4878126A (en) * 1986-02-19 1989-10-31 Canon Kabushiki Kaisha Imgae processing apparatus
JPH0777418B2 (ja) * 1986-03-17 1995-08-16 株式会社東芝 画像処理装置
JP2692797B2 (ja) * 1986-09-02 1997-12-17 キヤノン株式会社 画像処理装置
JPS63120377A (ja) * 1986-11-10 1988-05-24 Canon Inc 画像読み取り装置
JP2525794B2 (ja) * 1987-02-27 1996-08-21 大日本スクリ−ン製造株式会社 網点画像記録装置
JP2615625B2 (ja) * 1987-06-24 1997-06-04 富士ゼロックス株式会社 画像処理装置
US5148295A (en) * 1988-11-30 1992-09-15 Kabushiki Kaisha Toshiba Information processing apparatus
JPH02269065A (ja) * 1988-12-23 1990-11-02 Canon Inc 熱記録方式および前記熱記録方式を用いる記録装置
US5351138A (en) * 1990-04-24 1994-09-27 Ricoh Company, Ltd. Image area discriminating device
JP3189010B2 (ja) * 1990-06-19 2001-07-16 キヤノン株式会社 画像処理装置
JPH0470057A (ja) * 1990-07-09 1992-03-05 Mitsubishi Electric Corp 中間調処理回路
KR100188439B1 (ko) * 1990-11-28 1999-06-01 윤종용 문서화상데이터의 해상도 및 계조변환장치
JP2793466B2 (ja) 1992-06-11 1998-09-03 インターナショナル・ビジネス・マシーンズ・コーポレイション 画像の可変拡大方法及びその装置
JPH0660173A (ja) * 1992-06-11 1994-03-04 Internatl Business Mach Corp <Ibm> 画像を縮小する方法および装置
US5771105A (en) * 1996-03-04 1998-06-23 Hewlett-Packard Company High speed system for grey level image scaling, threshold matrix alignment and tiling, and creation of a binary half-tone image
US5781308A (en) * 1996-03-04 1998-07-14 Hewlett-Packard Company High speed system for threshold matrix alignment and tiling, during creation of a binary half-tone image
JP2000339450A (ja) * 1999-05-26 2000-12-08 Sony Corp 画像処理方法及び画像処理装置
JP4568748B2 (ja) * 2007-10-15 2010-10-27 シャープ株式会社 画像処理方法、画像処理装置、画像形成装置、コンピュータプログラム及び記録媒体
TWI462284B (zh) * 2008-12-30 2014-11-21 Ind Tech Res Inst 畫素陣列佈局

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1206681A (en) * 1967-03-22 1970-09-30 Printing Dev Inc Electronic reproduction of continuous image by half tone dots
GB1495499A (en) * 1974-01-30 1977-12-21 Crosfield Electronics Ltd Image reproduction systems
GB1499501A (en) * 1974-05-03 1978-02-01 Crosfield Electronics Ltd Image reproduction systems
US4075663A (en) * 1975-03-19 1978-02-21 Dr. -Ing. Rudolf Hell Gmbh Method for the rastered reproduction of half-tone pictures providing changes in the individual picture elements during transfer from an original to a reproduction
GB1549714A (en) * 1975-05-12 1979-08-08 Ecrm Making halftone reproductions
US4122496A (en) * 1977-02-23 1978-10-24 International Business Machines Corporation Apparatus and method for digital halftone reproduction
GB2006567B (en) * 1977-08-25 1982-08-25 Dainippon Screen Mfg Machine for and method of image production with variable reproduction scale
JPS56152369A (en) * 1980-04-25 1981-11-25 Konishiroku Photo Ind Co Ltd Forming method for variable magnification picture
CA1175556A (en) * 1981-02-24 1984-10-02 Kazumoto Iinuma System for transmitting a video signal with short runs avoided in a signal encoded from the video signal
JPS57171337A (en) * 1981-04-14 1982-10-21 Dainippon Screen Mfg Co Ltd Production of halftone plate picture
DE3312273C3 (de) * 1982-04-06 1996-03-21 Canon Kk Bildverarbeitungsgerät
JPH0671306B2 (ja) * 1983-03-30 1994-09-07 キヤノン株式会社 画像読み取り装置
US4675908A (en) * 1983-10-07 1987-06-23 Canon Kabushiki Kaisha Image data processing apparatus and system

Also Published As

Publication number Publication date
GB2151101B (en) 1987-04-23
GB8427629D0 (en) 1984-12-05
GB2151101A (en) 1985-07-10
US4701808A (en) 1987-10-20
DE3439826A1 (de) 1985-05-09

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
D2 Grant after examination
8363 Opposition against the patent
8331 Complete revocation