DE69827323D1 - Bildverarbeitungsschaltung - Google Patents

Bildverarbeitungsschaltung

Info

Publication number
DE69827323D1
DE69827323D1 DE69827323T DE69827323T DE69827323D1 DE 69827323 D1 DE69827323 D1 DE 69827323D1 DE 69827323 T DE69827323 T DE 69827323T DE 69827323 T DE69827323 T DE 69827323T DE 69827323 D1 DE69827323 D1 DE 69827323D1
Authority
DE
Germany
Prior art keywords
image processing
processing circuit
circuit
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 - Lifetime
Application number
DE69827323T
Other languages
English (en)
Other versions
DE69827323T2 (de
Inventor
Setsuya Kobayashi
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Application granted granted Critical
Publication of DE69827323D1 publication Critical patent/DE69827323D1/de
Publication of DE69827323T2 publication Critical patent/DE69827323T2/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
    • H04N1/40062—Discrimination between different image types, e.g. two-tone, continuous tone

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
DE69827323T 1997-07-11 1998-06-03 Bildverarbeitungsschaltung Expired - Lifetime DE69827323T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP18636097 1997-07-11
JP18636097A JP3540128B2 (ja) 1997-07-11 1997-07-11 画像処理回路

Publications (2)

Publication Number Publication Date
DE69827323D1 true DE69827323D1 (de) 2004-12-09
DE69827323T2 DE69827323T2 (de) 2005-11-10

Family

ID=16187019

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69827323T Expired - Lifetime DE69827323T2 (de) 1997-07-11 1998-06-03 Bildverarbeitungsschaltung

Country Status (4)

Country Link
US (1) US6163624A (de)
EP (1) EP0891074B1 (de)
JP (1) JP3540128B2 (de)
DE (1) DE69827323T2 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2364415B (en) 2000-06-30 2004-10-20 Post Office Image processing
US7515748B2 (en) * 2004-01-22 2009-04-07 Lexmark International, Inc. Controlled moving window adaptive histogram equalization

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4590606A (en) * 1982-12-13 1986-05-20 International Business Machines Corporation Multi-function image processing system
DE3686821T2 (de) * 1985-01-10 1993-04-01 Nippon Telegraph & Telephone Halbtonbildverarbeitungseinrichtung.
US5014124A (en) * 1988-02-25 1991-05-07 Ricoh Company, Ltd. Digital image processing apparatus
JPH0286369A (ja) * 1988-09-22 1990-03-27 Toshiba Corp 画像処理装置
JPH0722330B2 (ja) * 1990-01-10 1995-03-08 富士ゼロックス株式会社 画像処理装置の画像領域識別方式
JPH04270561A (ja) * 1990-10-08 1992-09-25 Ricoh Co Ltd 画像処理装置
JPH04188948A (ja) * 1990-11-22 1992-07-07 Canon Inc 画像処理装置
JP3488477B2 (ja) * 1992-06-03 2004-01-19 ミノルタ株式会社 画像処理装置
JP3215768B2 (ja) * 1994-03-24 2001-10-09 株式会社東芝 画像処理装置
JP3207690B2 (ja) * 1994-10-27 2001-09-10 シャープ株式会社 画像処理装置
US5754312A (en) * 1994-11-22 1998-05-19 Mita Industrial Co., Ltd. Method of and apparatus for detecting pixels constituting dotted image area utilizing distance between change points of pixel values

Also Published As

Publication number Publication date
DE69827323T2 (de) 2005-11-10
EP0891074B1 (de) 2004-11-03
EP0891074A1 (de) 1999-01-13
JPH1132212A (ja) 1999-02-02
US6163624A (en) 2000-12-19
JP3540128B2 (ja) 2004-07-07

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition