DE68927696D1 - Bildverarbeitungsgerät - Google Patents

Bildverarbeitungsgerät

Info

Publication number
DE68927696D1
DE68927696D1 DE68927696T DE68927696T DE68927696D1 DE 68927696 D1 DE68927696 D1 DE 68927696D1 DE 68927696 T DE68927696 T DE 68927696T DE 68927696 T DE68927696 T DE 68927696T DE 68927696 D1 DE68927696 D1 DE 68927696D1
Authority
DE
Germany
Prior art keywords
image processing
processing device
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 - Fee Related
Application number
DE68927696T
Other languages
English (en)
Other versions
DE68927696T2 (de
Inventor
Akihiro Katayama
Hidefumi Oosawa
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.)
Canon Inc
Original Assignee
Canon Inc
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
Priority claimed from JP63208274A external-priority patent/JP2839095B2/ja
Priority claimed from JP63212387A external-priority patent/JPH0260771A/ja
Priority claimed from JP63212386A external-priority patent/JP2755307B2/ja
Priority claimed from JP63280484A external-priority patent/JPH02127868A/ja
Application filed by Canon Inc filed Critical Canon Inc
Application granted granted Critical
Publication of DE68927696D1 publication Critical patent/DE68927696D1/de
Publication of DE68927696T2 publication Critical patent/DE68927696T2/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
    • H04N1/405—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels
    • H04N1/4051—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a dispersed dots halftone pattern, the dots having substantially the same size
    • H04N1/4052—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a dispersed dots halftone pattern, the dots having substantially the same size by error diffusion, i.e. transferring the binarising error to neighbouring dot decisions
    • 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
    • H04N1/405—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels
    • H04N1/4051—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a dispersed dots halftone pattern, the dots having substantially the same size
    • H04N1/4052—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a dispersed dots halftone pattern, the dots having substantially the same size by error diffusion, i.e. transferring the binarising error to neighbouring dot decisions
    • H04N1/4053—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a dispersed dots halftone pattern, the dots having substantially the same size by error diffusion, i.e. transferring the binarising error to neighbouring dot decisions with threshold modulated relative to input image data or vice versa

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
DE68927696T 1988-08-24 1989-08-23 Bildverarbeitungsgerät Expired - Fee Related DE68927696T2 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP63208274A JP2839095B2 (ja) 1988-08-24 1988-08-24 画像処理装置
JP63212387A JPH0260771A (ja) 1988-08-29 1988-08-29 画像処理方式
JP63212386A JP2755307B2 (ja) 1988-08-29 1988-08-29 画像処理装置
JP63280484A JPH02127868A (ja) 1988-11-08 1988-11-08 画像処理方法及びその装置

Publications (2)

Publication Number Publication Date
DE68927696D1 true DE68927696D1 (de) 1997-03-06
DE68927696T2 DE68927696T2 (de) 1997-05-28

Family

ID=27476400

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68927696T Expired - Fee Related DE68927696T2 (de) 1988-08-24 1989-08-23 Bildverarbeitungsgerät

Country Status (3)

Country Link
US (2) US5086484A (de)
EP (2) EP0356225B1 (de)
DE (1) DE68927696T2 (de)

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JPH0787317A (ja) * 1993-09-16 1995-03-31 Riso Kagaku Corp 画像処理方法及びその装置
JP3110924B2 (ja) * 1993-09-30 2000-11-20 キヤノン株式会社 画像形成装置
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US5659402A (en) * 1994-01-14 1997-08-19 Mita Industrial Co., Ltd. Image processing method and apparatus
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JP3444094B2 (ja) * 1995-10-06 2003-09-08 セイコーエプソン株式会社 画像処理方法及びその装置
US6113290A (en) * 1996-02-21 2000-09-05 Canon Kabushiki Kaisha Ink jet recording apparatus having improved edge detecting and edge formation
US5737453A (en) * 1996-05-17 1998-04-07 Canon Information Systems, Inc. Enhanced error-diffusion method for color or black-and-white reproduction
US5933539A (en) * 1996-05-30 1999-08-03 Xerox Corporation Method and system for hybrid error diffusion processing of image information using programmable screen modulation
US5822464A (en) * 1996-05-30 1998-10-13 Xerox Corporation Method and system for processing image information using video dependent dampened screening and error diffusion
US5739917A (en) * 1996-07-12 1998-04-14 Seiko Epson Corporation Error-diffusion-type half-toning employing adaptive thresholding for enhanced smoothness
US6496605B1 (en) * 1996-08-02 2002-12-17 United Module Corporation Block deformation removing filter, image processing apparatus using the same, method of filtering image signal, and storage medium for storing software therefor
GB2317007B (en) * 1996-09-04 2000-07-26 Spectrum Tech Ltd Contrast determining apparatus and methods
US5838885A (en) * 1996-09-09 1998-11-17 Seiko Epson Corporation Salt-and-pepper-noise reduction
JP3669789B2 (ja) * 1996-09-11 2005-07-13 富士写真フイルム株式会社 異常陰影候補の検出方法および装置
NL1004279C2 (nl) * 1996-10-15 1998-04-20 Oce Tech Bv Werkwijze voor het halftonen van grijswaardesignalen van pixels van een beeld en beeldreproductieinrichting voor het reproduceren van beelden.
US6282323B1 (en) * 1996-12-04 2001-08-28 Canon Kabushiki Kaisha Image processing method and apparatus
JP3752805B2 (ja) * 1997-10-30 2006-03-08 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
TW384612B (en) * 1998-08-19 2000-03-11 Acer Peripherals Inc Image processing system and method capable of converting gray-level images into binary images
JP2000341519A (ja) * 1999-05-18 2000-12-08 Xuli Co Ltd 印刷品質を向上する方法
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
DE60001143T2 (de) 1999-10-29 2003-10-16 Ricoh Co., Ltd. Bildverarbeitungsvorrichtung und -verfahren und Aufzeichnungsmedium
US6614556B1 (en) * 1999-11-22 2003-09-02 Sindoricoh Co., Ltd. Apparatus for quantizing a digital image by using an error diffusion coefficient and threshold modulation in zigzag quantization
JP3961736B2 (ja) * 2000-02-04 2007-08-22 株式会社リコー 画像処理装置
US6507347B1 (en) * 2000-03-24 2003-01-14 Lighthouse Technologies Ltd. Selected data compression for digital pictorial information
JP3904840B2 (ja) * 2000-08-15 2007-04-11 富士通株式会社 多値画像から罫線を抽出する罫線抽出装置
US6999202B2 (en) 2001-03-27 2006-02-14 Polaroid Corporation Method for generating a halftone of a source image
US6842186B2 (en) * 2001-05-30 2005-01-11 Polaroid Corporation High speed photo-printing apparatus
ATE303901T1 (de) * 2001-05-30 2005-09-15 Polaroid Corp Hochgeschwindigkeitsphotodruckgerät
US6937365B2 (en) 2001-05-30 2005-08-30 Polaroid Corporation Rendering images utilizing adaptive error diffusion
US7079289B2 (en) 2001-10-01 2006-07-18 Xerox Corporation Rank-order error diffusion image processing
US7088857B2 (en) * 2002-01-31 2006-08-08 Hewlett-Packard Development Company, L.P. Dynamic bilevel thresholding of digital images
US6906736B2 (en) * 2002-02-19 2005-06-14 Polaroid Corporation Technique for printing a color image
US8009327B2 (en) * 2002-07-11 2011-08-30 Canon Kabushiki Kaisha Method and apparatus for image processing
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JP3823933B2 (ja) * 2003-03-07 2006-09-20 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
US8773685B2 (en) 2003-07-01 2014-07-08 Intellectual Ventures I Llc High-speed digital image printing system
JP4111190B2 (ja) * 2004-12-24 2008-07-02 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
JP4501791B2 (ja) * 2005-06-17 2010-07-14 コニカミノルタビジネステクノロジーズ株式会社 画像処理方法及び画像処理プログラム
US8165413B1 (en) 2006-12-20 2012-04-24 The Mathworks, Inc. Optimizing bounds checking in neighborhood processes
JP2008227759A (ja) * 2007-03-09 2008-09-25 Sharp Corp 画像処理装置、画像形成装置、画像処理方法、画像処理プログラムおよびコンピュータ読み取り可能な記録媒体
JP4872860B2 (ja) * 2007-09-13 2012-02-08 コニカミノルタビジネステクノロジーズ株式会社 画像処理装置及び画像処理方法
TW201035910A (en) * 2009-03-18 2010-10-01 Novatek Microelectronics Corp Method and apparatus for reducing spatial noise of images
JP5318646B2 (ja) * 2009-04-17 2013-10-16 ルネサスエレクトロニクス株式会社 差分画像生成装置、差分画像生成方法、及びプログラム
JP6472336B2 (ja) 2014-06-18 2019-02-20 キヤノン株式会社 画像処理装置、画像処理方法およびプログラム
JP7322366B2 (ja) * 2018-09-11 2023-08-08 富士フイルムビジネスイノベーション株式会社 画像受信装置、画像送受信システム及び画像受信プログラム

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Also Published As

Publication number Publication date
EP0356225A3 (de) 1992-12-09
EP0730369A1 (de) 1996-09-04
DE68927696T2 (de) 1997-05-28
EP0356225A2 (de) 1990-02-28
EP0356225B1 (de) 1997-01-22
US5488673A (en) 1996-01-30
US5086484A (en) 1992-02-04

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee