DE69726702T2 - Verschärfungsfilter für Bilder mit automatischer Anpassung an Bildsorten - Google Patents

Verschärfungsfilter für Bilder mit automatischer Anpassung an Bildsorten Download PDF

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Publication number
DE69726702T2
DE69726702T2 DE69726702T DE69726702T DE69726702T2 DE 69726702 T2 DE69726702 T2 DE 69726702T2 DE 69726702 T DE69726702 T DE 69726702T DE 69726702 T DE69726702 T DE 69726702T DE 69726702 T2 DE69726702 T2 DE 69726702T2
Authority
DE
Germany
Prior art keywords
images
image types
automatic adaptation
sharpening filter
sharpening
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
DE69726702T
Other languages
German (de)
English (en)
Other versions
DE69726702D1 (de
Inventor
Patricia D Lopez
Jeffrey P Lee
Hal Hansen
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.)
Hewlett Packard Development Co LP
Original Assignee
Hewlett Packard Co
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 Hewlett Packard Co filed Critical Hewlett Packard Co
Application granted granted Critical
Publication of DE69726702D1 publication Critical patent/DE69726702D1/de
Publication of DE69726702T2 publication Critical patent/DE69726702T2/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
    • H04N1/409—Edge or detail enhancement; Noise or error suppression
    • H04N1/4092—Edge or detail enhancement

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Image Analysis (AREA)
  • Picture Signal Circuits (AREA)
  • Processing Of Color Television Signals (AREA)
DE69726702T 1996-12-27 1997-09-16 Verschärfungsfilter für Bilder mit automatischer Anpassung an Bildsorten Expired - Fee Related DE69726702T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/773,428 US5822467A (en) 1996-12-27 1996-12-27 Sharpening filter for images with automatic adaptation to image type

Publications (2)

Publication Number Publication Date
DE69726702D1 DE69726702D1 (de) 2004-01-22
DE69726702T2 true DE69726702T2 (de) 2004-10-21

Family

ID=25098230

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69726702T Expired - Fee Related DE69726702T2 (de) 1996-12-27 1997-09-16 Verschärfungsfilter für Bilder mit automatischer Anpassung an Bildsorten

Country Status (4)

Country Link
US (1) US5822467A (https=)
EP (1) EP0851666B1 (https=)
JP (1) JPH10214339A (https=)
DE (1) DE69726702T2 (https=)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6954287B1 (en) * 1999-11-05 2005-10-11 Xerox Corporation Gamut mapping preserving local luminance differences with adaptive spatial filtering
US6804408B1 (en) * 1999-12-22 2004-10-12 Eastman Kodak Company Method for enhancing a digital image with noise-dependent control of texture
US6807313B1 (en) * 2000-02-23 2004-10-19 Oak Technology, Inc. Method of adaptively enhancing a digital image
US6721458B1 (en) * 2000-04-14 2004-04-13 Seiko Epson Corporation Artifact reduction using adaptive nonlinear filters
US7003173B2 (en) * 2001-06-12 2006-02-21 Sharp Laboratories Of America, Inc. Filter for combined de-ringing and edge sharpening
US20030020933A1 (en) * 2001-07-24 2003-01-30 Youngers Kevin J. Method and apparatus for reducing inaccuracies when processing color data with a matrix
JP3741204B2 (ja) * 2001-10-10 2006-02-01 株式会社日立プラズマパテントライセンシング カラー画像表示装置
EP1391866A1 (en) * 2002-08-23 2004-02-25 Deutsche Thomson Brandt Adaptive noise reduction for digital display panels
US7228004B2 (en) 2002-09-05 2007-06-05 Eastman Kodak Company Method for sharpening a digital image
US7532363B2 (en) * 2003-07-01 2009-05-12 Xerox Corporation Apparatus and methods for de-screening scanned documents
JP2005141477A (ja) * 2003-11-06 2005-06-02 Noritsu Koki Co Ltd 画像鮮鋭化処理方法とこの方法を実施する画像処理装置
US7430336B2 (en) * 2004-05-06 2008-09-30 Qualcomm Incorporated Method and apparatus for image enhancement for low bit rate video compression
US7697782B2 (en) * 2004-09-16 2010-04-13 Sharp Laboratories Of America, Inc. System for reducing ringing artifacts
US8306366B2 (en) * 2007-08-23 2012-11-06 Samsung Electronics Co., Ltd. Method and apparatus for extracting feature points from digital image
JP4683343B2 (ja) * 2007-12-27 2011-05-18 株式会社 日立ディスプレイズ 色信号生成装置
US10123050B2 (en) * 2008-07-11 2018-11-06 Qualcomm Incorporated Filtering video data using a plurality of filters
JP2018000644A (ja) * 2016-07-04 2018-01-11 Hoya株式会社 画像処理装置及び電子内視鏡システム
EP4083874B1 (en) 2021-03-04 2025-12-31 Samsung Electronics Co., Ltd. IMAGE PROCESSING DEVICE AND ITS OPERATING METHOD

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5177795A (en) * 1985-11-05 1993-01-05 Canon Kabushiki Kaisha Image processing apparatus
US5091925A (en) * 1990-01-18 1992-02-25 Siemens Aktiengesellschaft X-ray diagnostics installation with spatial frequency filtering
US5485534A (en) * 1990-03-28 1996-01-16 Fuji Photo Film Co., Ltd. Method and apparatus for emphasizing sharpness of image by detecting the edge portions of the image
NL9100275A (nl) * 1991-02-18 1992-09-16 Oce Nederland Bv Werkwijze voor beeldbewerking, scan/afdruksysteem voor uitvoeren van de werkwijze en beeldselectieeenheid voor toepassing in het scan/afdruksysteem.
JPH04294466A (ja) * 1991-03-22 1992-10-19 Ricoh Co Ltd 画像処理装置
KR100206267B1 (ko) * 1991-08-20 1999-07-01 윤종용 화상처리장치의 화상데이타 경계성분 강조회로
EP0531904A3 (en) * 1991-09-10 1993-10-06 Eastman Kodak Company Method and apparatus for spatially variant filtering
JP3640404B2 (ja) * 1993-08-18 2005-04-20 富士通株式会社 画像データ処理装置

Also Published As

Publication number Publication date
EP0851666A2 (en) 1998-07-01
JPH10214339A (ja) 1998-08-11
US5822467A (en) 1998-10-13
DE69726702D1 (de) 2004-01-22
EP0851666B1 (en) 2003-12-10
EP0851666A3 (en) 1999-09-08

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: HEWLETT-PACKARD DEVELOPMENT CO., L.P., HOUSTON, TE

8339 Ceased/non-payment of the annual fee