TW200918342A - Toner-based noise reduction in electrostatography - Google Patents

Toner-based noise reduction in electrostatography Download PDF

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Publication number
TW200918342A
TW200918342A TW097132232A TW97132232A TW200918342A TW 200918342 A TW200918342 A TW 200918342A TW 097132232 A TW097132232 A TW 097132232A TW 97132232 A TW97132232 A TW 97132232A TW 200918342 A TW200918342 A TW 200918342A
Authority
TW
Taiwan
Prior art keywords
noise
image
toner
digital image
color
Prior art date
Application number
TW097132232A
Other languages
English (en)
Chinese (zh)
Inventor
Hwai-Tzuu Tai
Yee S Ng
Stephen E Johnson
Jennifer S Deyoung
Original Assignee
Eastman Kodak 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 Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of TW200918342A publication Critical patent/TW200918342A/zh

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/01—Apparatus for electrographic processes using a charge pattern for producing multicoloured copies
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/73—Deblurring; Sharpening
    • G06T5/75—Unsharp masking
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Color Electrophotography (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Image Processing (AREA)
  • Color, Gradation (AREA)
TW097132232A 2007-08-24 2008-08-22 Toner-based noise reduction in electrostatography TW200918342A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/844,419 US7755802B2 (en) 2007-08-24 2007-08-24 Toner-based noise reduction in electrostatography

Publications (1)

Publication Number Publication Date
TW200918342A true TW200918342A (en) 2009-05-01

Family

ID=39967886

Family Applications (1)

Application Number Title Priority Date Filing Date
TW097132232A TW200918342A (en) 2007-08-24 2008-08-22 Toner-based noise reduction in electrostatography

Country Status (7)

Country Link
US (1) US7755802B2 (enExample)
EP (1) EP2179396B1 (enExample)
JP (1) JP2010537260A (enExample)
AT (1) ATE494602T1 (enExample)
DE (1) DE602008004359D1 (enExample)
TW (1) TW200918342A (enExample)
WO (1) WO2009029179A1 (enExample)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8180169B2 (en) * 2008-02-27 2012-05-15 Xerox Corporation System and method for multi-scale sigma filtering using quadrature mirror filters
JP4952627B2 (ja) * 2008-03-21 2012-06-13 富士通株式会社 画像処理装置、画像処理方法および画像処理プログラム
US8090215B2 (en) * 2008-04-11 2012-01-03 Xerox Corporation Method and system for noise level detection in image data
US8208753B2 (en) * 2008-04-11 2012-06-26 Xerox Corporation Method and system for noise level detection in image data
US8055093B2 (en) * 2008-04-11 2011-11-08 Xerox Corporation Method and system for noise level detection in image data
US8457396B2 (en) * 2009-08-11 2013-06-04 Microsoft Corporation Digital image compression and decompression
US8571268B2 (en) * 2010-03-19 2013-10-29 Xerox Corporation On-paper image quality metric using on-belt sensing
US8531723B2 (en) * 2010-06-28 2013-09-10 Konica Minolta Laboratory U.S.A., Inc. Systems and methods for improving performance of trigonometric and distance function calculations during printing and display
US8619329B2 (en) * 2010-11-12 2013-12-31 Xerox Corporation Print smoothness on clear toner enabled systems
US8467105B2 (en) 2011-02-15 2013-06-18 Xerox Corporation Optimal contrast level draft-mode printing using spatial frequency analysis
JP5757565B2 (ja) * 2011-07-15 2015-07-29 国立大学法人東京工業大学 ノイズレベル推定装置、ノイズレベル推定方法及びプログラム
JP2016042156A (ja) * 2014-08-18 2016-03-31 富士ゼロックス株式会社 画像形成装置
US20170291261A1 (en) * 2015-06-12 2017-10-12 Ashok Chand Mathur Method And Apparatus Of Very Much Faster 3D Printer
JP6725262B2 (ja) * 2016-02-26 2020-07-15 理想科学工業株式会社 印刷システムおよび印刷装置

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US4941039A (en) * 1989-04-04 1990-07-10 Eastman Kodak Company Color image reproduction apparatus having a least squares look-up table augmented by smoothing
US5081692A (en) * 1991-04-04 1992-01-14 Eastman Kodak Company Unsharp masking using center weighted local variance for image sharpening and noise suppression
US5629769A (en) * 1995-06-01 1997-05-13 Eastman Kodak Company Apparatus and method for the measurement of grain in images
US6175374B1 (en) * 1995-10-13 2001-01-16 Agfa-Gevaert Method for stable electro (stato) graphic reproduction of a continuous tone image
US5923775A (en) * 1996-04-04 1999-07-13 Eastman Kodak Company Apparatus and method for signal dependent noise estimation and reduction in digital images
US6243133B1 (en) * 1997-03-07 2001-06-05 Eastman Kodak Company Method for automatic scene balance of digital images
US6292574B1 (en) * 1997-08-29 2001-09-18 Eastman Kodak Company Computer program product for redeye detection
EP1014207A1 (en) 1998-12-23 2000-06-28 Agfa-Gevaert N.V. Toner sequence to minimise noise
US6707950B1 (en) * 1999-06-22 2004-03-16 Eastman Kodak Company Method for modification of non-image data in an image processing chain
US6907144B1 (en) * 1999-10-06 2005-06-14 Eastman Kodak Company Noise reduction method, apparatus, and program for digital image processing
US6813389B1 (en) * 1999-12-15 2004-11-02 Eastman Kodak Company Digital image processing method and system including noise reduction and tone scale adjustments
US6538677B1 (en) * 2000-05-17 2003-03-25 Heidelberger Druckmaschinen Ag Apparatus and method for gray level printing
US6819452B1 (en) * 2000-09-06 2004-11-16 Hewlett-Packard Development Company, L.P. Method and system for modifying portions of an image bit stream representing printing horizontal lines and edges to improve print quality
US6823089B1 (en) * 2000-09-28 2004-11-23 Eastman Kodak Company Method of determining the extent of blocking and contouring artifacts in a digital image
US20030002744A1 (en) * 2001-04-06 2003-01-02 Eastman Kodak Company Method for producing an image noise table having statistics for use by image processing algorithms
US7092554B2 (en) * 2001-05-01 2006-08-15 Eastman Kodak Company Method for detecting eye and mouth positions in a digital image
US6895103B2 (en) * 2001-06-19 2005-05-17 Eastman Kodak Company Method for automatically locating eyes in an image
US6931160B2 (en) * 2001-10-31 2005-08-16 Eastman Kodak Company Method of spatially filtering digital image for noise removal, noise estimation or digital image enhancement
US6934421B2 (en) * 2002-03-20 2005-08-23 Eastman Kodak Company Calculating noise from multiple digital images having a common noise source
US7065255B2 (en) * 2002-05-06 2006-06-20 Eastman Kodak Company Method and apparatus for enhancing digital images utilizing non-image data
JP2004125988A (ja) * 2002-09-30 2004-04-22 Canon Inc 画像形成装置、画像形成方法、及び制御プログラム
US7203431B2 (en) * 2003-12-26 2007-04-10 Ricoh Company, Ltd. Abnormality determining method, abnormality determining apparatus, and image forming apparatus

Also Published As

Publication number Publication date
US20090051979A1 (en) 2009-02-26
EP2179396B1 (en) 2011-01-05
DE602008004359D1 (de) 2011-02-17
WO2009029179A1 (en) 2009-03-05
ATE494602T1 (de) 2011-01-15
US7755802B2 (en) 2010-07-13
JP2010537260A (ja) 2010-12-02
EP2179396A1 (en) 2010-04-28

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