DE69622491T2 - Verfahren und Vorrichtung zur Verbesserung des Auflösungsvermögens von Grautonbildern mit Text und Bildern - Google Patents

Verfahren und Vorrichtung zur Verbesserung des Auflösungsvermögens von Grautonbildern mit Text und Bildern

Info

Publication number
DE69622491T2
DE69622491T2 DE69622491T DE69622491T DE69622491T2 DE 69622491 T2 DE69622491 T2 DE 69622491T2 DE 69622491 T DE69622491 T DE 69622491T DE 69622491 T DE69622491 T DE 69622491T DE 69622491 T2 DE69622491 T2 DE 69622491T2
Authority
DE
Germany
Prior art keywords
images
resolution
text
improving
gray tone
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
DE69622491T
Other languages
English (en)
Other versions
DE69622491D1 (de
Inventor
Ying-Wei Lin
Robert P Loce
Michael Branciforte
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.)
Xerox Corp
Original Assignee
Xerox 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 Xerox Corp filed Critical Xerox Corp
Application granted granted Critical
Publication of DE69622491D1 publication Critical patent/DE69622491D1/de
Publication of DE69622491T2 publication Critical patent/DE69622491T2/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
    • H04N1/409—Edge or detail enhancement; Noise or error suppression
    • H04N1/4092—Edge or detail enhancement
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T3/00—Geometric image transformation in the plane of the image
    • G06T3/40—Scaling the whole image or part thereof
    • G06T3/403—Edge-driven scaling

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Editing Of Facsimile Originals (AREA)
DE69622491T 1995-10-11 1996-09-20 Verfahren und Vorrichtung zur Verbesserung des Auflösungsvermögens von Grautonbildern mit Text und Bildern Expired - Lifetime DE69622491T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/540,998 US5742703A (en) 1995-10-11 1995-10-11 Method and apparatus for the resolution enhancement of gray-scale images that include text and line art

Publications (2)

Publication Number Publication Date
DE69622491D1 DE69622491D1 (de) 2002-08-29
DE69622491T2 true DE69622491T2 (de) 2002-11-28

Family

ID=24157775

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69622491T Expired - Lifetime DE69622491T2 (de) 1995-10-11 1996-09-20 Verfahren und Vorrichtung zur Verbesserung des Auflösungsvermögens von Grautonbildern mit Text und Bildern

Country Status (5)

Country Link
US (1) US5742703A (de)
EP (1) EP0768792B1 (de)
JP (1) JPH09139845A (de)
BR (1) BR9605055B1 (de)
DE (1) DE69622491T2 (de)

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DE10348331B4 (de) * 2003-01-23 2006-04-13 Hewlett-Packard Development Co., L.P., Houston Prozessorlesbares Medium, System, Asic, elektrophotographisches Bilderzeugungsgerät, Verfahren und Bilderzeugungsgerät

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CN100453317C (zh) * 2004-01-05 2009-01-21 明基电通股份有限公司 改善锯齿效应的影像处理方法
US7365883B2 (en) * 2004-01-09 2008-04-29 Hewlett-Packard Development Company, L.P. Dither matrix design using sub-pixel addressability
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JP2006053690A (ja) * 2004-08-10 2006-02-23 Ricoh Co Ltd 画像処理装置、画像処理方法、画像処理プログラムおよび記録媒体
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US7679620B2 (en) * 2005-07-28 2010-03-16 Microsoft Corp. Image processing using saltating samples
KR100679046B1 (ko) * 2005-10-10 2007-02-05 삼성전자주식회사 이미지의 지역적 정보를 이용한 비트 해상도 확장 방법 및장치
JP4626473B2 (ja) * 2005-10-12 2011-02-09 セイコーエプソン株式会社 画像処理装置、画像出力装置および方法
US7760390B2 (en) * 2005-12-15 2010-07-20 Xerox Corporation Binary resolution conversion aparatus and method
US7840071B2 (en) * 2006-12-12 2010-11-23 Seiko Epson Corporation Method and apparatus for identifying regions of different content in an image
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Publication number Priority date Publication date Assignee Title
DE10348331B4 (de) * 2003-01-23 2006-04-13 Hewlett-Packard Development Co., L.P., Houston Prozessorlesbares Medium, System, Asic, elektrophotographisches Bilderzeugungsgerät, Verfahren und Bilderzeugungsgerät

Also Published As

Publication number Publication date
JPH09139845A (ja) 1997-05-27
EP0768792B1 (de) 2002-07-24
BR9605055A (pt) 1998-06-30
US5742703A (en) 1998-04-21
EP0768792A2 (de) 1997-04-16
DE69622491D1 (de) 2002-08-29
EP0768792A3 (de) 1998-03-04
BR9605055B1 (pt) 2009-01-13

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