DE10039648A1 - Verfahren zur Verbesserung von digitalen Bildern - Google Patents

Verfahren zur Verbesserung von digitalen Bildern

Info

Publication number
DE10039648A1
DE10039648A1 DE10039648A DE10039648A DE10039648A1 DE 10039648 A1 DE10039648 A1 DE 10039648A1 DE 10039648 A DE10039648 A DE 10039648A DE 10039648 A DE10039648 A DE 10039648A DE 10039648 A1 DE10039648 A1 DE 10039648A1
Authority
DE
Germany
Prior art keywords
computer
pixel window
readable medium
threshold
steps
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.)
Withdrawn
Application number
DE10039648A
Other languages
German (de)
English (en)
Inventor
Brian Atkins
Morgan Schramm
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
Publication of DE10039648A1 publication Critical patent/DE10039648A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/20—Image enhancement or restoration using local operators

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Image Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
DE10039648A 1999-08-27 2000-08-14 Verfahren zur Verbesserung von digitalen Bildern Withdrawn DE10039648A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/384,488 US6721457B1 (en) 1999-08-27 1999-08-27 Method for enhancing digital images

Publications (1)

Publication Number Publication Date
DE10039648A1 true DE10039648A1 (de) 2001-03-08

Family

ID=23517501

Family Applications (1)

Application Number Title Priority Date Filing Date
DE10039648A Withdrawn DE10039648A1 (de) 1999-08-27 2000-08-14 Verfahren zur Verbesserung von digitalen Bildern

Country Status (4)

Country Link
US (1) US6721457B1 (https=)
JP (1) JP2001092958A (https=)
DE (1) DE10039648A1 (https=)
GB (1) GB2357001B (https=)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3736219B2 (ja) * 1999-08-13 2006-01-18 コニカミノルタビジネステクノロジーズ株式会社 画像処理装置及び方法
US20050100235A1 (en) * 2003-11-07 2005-05-12 Hao-Song Kong System and method for classifying and filtering pixels
US7664326B2 (en) * 2004-07-09 2010-02-16 Aloka Co., Ltd Method and apparatus of image processing to detect and enhance edges
JP4724124B2 (ja) * 2004-10-08 2011-07-13 パナソニック株式会社 画像処理装置および画像処理プログラム
KR100735551B1 (ko) * 2005-10-14 2007-07-04 삼성전자주식회사 칼라 영역별 적응적 필터링 방법 및 장치
TW200733720A (en) * 2006-02-24 2007-09-01 Pixart Imaging Inc Digital image processing method and the device thereof
EP1879147B1 (en) * 2006-07-11 2016-09-21 Vestel Elektronik Sanayi ve Ticaret A.S. Method and apparatus for adjusting the contrast of an image
US7778482B2 (en) * 2006-07-19 2010-08-17 Trident Microsystems (Far East) Ltd. Method and system for reducing mosquito noise in a digital image
TWI328400B (en) * 2006-07-21 2010-08-01 Via Tech Inc Dynamically choosing apparatus and the method for choosing a filter coefficient group thereof
US8665498B2 (en) 2010-07-20 2014-03-04 Conexant Systems, Inc. Method and system for automatically detecting and processing halftone regions in scanned documents
JP5841968B2 (ja) * 2013-05-31 2016-01-13 京セラドキュメントソリューションズ株式会社 画像読取装置、画像形成装置およびプログラム
US10026010B2 (en) * 2014-05-14 2018-07-17 At&T Intellectual Property I, L.P. Image quality estimation using a reference image portion

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07121063B2 (ja) 1987-01-21 1995-12-20 富士ゼロックス株式会社 画像処理装置
JPS63294082A (ja) * 1987-05-26 1988-11-30 Canon Inc 画像記録装置
JPH02162475A (ja) 1988-12-15 1990-06-22 Dainippon Screen Mfg Co Ltd 画像輪郭修正方法
JPH0834544B2 (ja) 1990-08-14 1996-03-29 株式会社東芝 画像の復元処理方法
US5031227A (en) 1990-09-27 1991-07-09 Loral Aerospace Corp. Edge enhancement and smoothing in digital images
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.
US5283671A (en) 1991-02-20 1994-02-01 Stewart John R Method and apparatus for converting RGB digital data to optimized CMYK digital data
US5271064A (en) 1991-06-14 1993-12-14 University Of Cincinnati Apparatus and method for smoothing regions and enhancing edges in gray scale images
EP0531904A3 (en) 1991-09-10 1993-10-06 Eastman Kodak Company Method and apparatus for spatially variant filtering
US5273040A (en) 1991-11-14 1993-12-28 Picker International, Inc. Measurement of vetricle volumes with cardiac MRI
JP3092024B2 (ja) 1991-12-09 2000-09-25 松下電器産業株式会社 画像処理方法
US5649031A (en) 1992-03-31 1997-07-15 Hitachi, Ltd. Image information processor for producing high-quality output image
JP3097785B2 (ja) 1992-04-30 2000-10-10 株式会社リコー 画像処理装置
JP3314195B2 (ja) * 1992-12-28 2002-08-12 ミノルタ株式会社 画像処理装置
JP3640404B2 (ja) 1993-08-18 2005-04-20 富士通株式会社 画像データ処理装置
JPH07325916A (ja) 1994-05-31 1995-12-12 Toshiba Corp ２値化装置、２値化方法及び画像情報処理装置
US5819035A (en) * 1995-10-20 1998-10-06 Matsushita Electric Industrial Co., Ltd. Post-filter for removing ringing artifacts of DCT coding
DE69715426T2 (de) * 1996-07-31 2003-01-09 Matsushita Electric Industrial Co., Ltd. Verfahren und vorrichtung zur bilddekodierung
US5880767A (en) 1996-09-11 1999-03-09 Hewlett-Packard Company Perceptual image resolution enhancement system
US6075926A (en) * 1997-04-21 2000-06-13 Hewlett-Packard Company Computerized method for improving data resolution
US6392759B1 (en) * 1997-06-02 2002-05-21 Seiko Epson Corporation Edge-enhancement processing apparatus and method, and medium containing edge-enhancement processing program
US7113617B2 (en) * 2000-12-12 2006-09-26 Hewlett-Packard Development Company, L.P. Method of computing sub-pixel Euclidean distance maps

Also Published As

Publication number Publication date
JP2001092958A (ja) 2001-04-06
GB2357001B (en) 2003-12-31
GB0019273D0 (en) 2000-09-27
US6721457B1 (en) 2004-04-13
GB2357001A (en) 2001-06-06

Similar Documents

Publication Publication Date Title
DE69822545T2 (de) Bildverbesserung unter Benutzung einer Flächeninterpolation
DE69631257T2 (de) Bildverarbeitungssystem
DE69419699T2 (de) Bildwiedergabe unter Verwendung von Farbfehlerdiffusion
DE69829080T2 (de) System zur ermittlung des tonerverbrauchs
DE69634040T2 (de) Verfahren und Gerät zur Bitratenreduktion und Rekonstruktion von Bilddaten mittels Ditherfeldern
DE60111756T2 (de) Verfahren zum verbessern der kompressionsfähigkeit und der bildqualität von abgetasteten dokumenten
DE10319094B4 (de) Verfahren und Vorrichtung zum Zuordnen einer Bildverbesserung zu einer Farbe
EP1368960B1 (en) Digital image appearance enhancement and compressibility improvement method and system
DE60310361T2 (de) Farbraumwandlung unter Verwendung von Interpolation
DE69935120T2 (de) Automatische Verbesserung der Druckqualität basiert auf Grösse, Form, Orientierung und Farbe von Strukturen
DE69630353T2 (de) Rechnerkalibrierung eines Farbdruckbildes mittels stufenweiser Verbesserung
DE69015205T2 (de) Digitales halbtonverfahren für farbbilder mit vektorfehlerdiffusion.
DE69220651T2 (de) Halbtonrasterung mit erhöhtem dynamischen Bereich und bildkantenverstärkter Fehlerdiffusion
DE69320702T2 (de) Farbbilderzeugungsverfahren und -gerät
DE60033484T2 (de) Umsetzung des Farbtonbereichs mit Erhaltung der lokalen Luminanzdifferenzen
EP0986896B1 (en) Color transformation system based on target color image
DE69621097T2 (de) Drucker-Treiber-Architektur zur Verkleinerung von Bandspeichern
DE69618539T2 (de) Farbdrucker mit Zittermuster
DE68922674T2 (de) Bildverarbeitungsverfahren und -anordnung.
DE69733456T2 (de) Bildverarbeitungsvorrichtung und -verfahren
DE60225761T2 (de) Verfahren zum mehrstufigen drucken von digitalbildern mithilfe reduzierter farbmittelmengen
DE69520020T2 (de) Verbessertes Verfahren und Gerät zur Verringerung von Artefakten in Halbtonbildern mit Verwendung von Korrektur des Graugleichgewichts
DE10039648A1 (de) Verfahren zur Verbesserung von digitalen Bildern
DE69928775T2 (de) Verfahren und vorrichtung zur interpolation von bilddaten sowie medium für ein bilddateninterpolationsprogramm
DE69615878T2 (de) Verarbeitung von halbtongerasterten Farbbildern

Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8127 New person/name/address of the applicant

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

8139 Disposal/non-payment of the annual fee