DE69932979D1 - Drucken gerasterter Halbtöne unter Verwendung von torischen Filtern - Google Patents

Drucken gerasterter Halbtöne unter Verwendung von torischen Filtern

Info

Publication number
DE69932979D1
DE69932979D1 DE69932979T DE69932979T DE69932979D1 DE 69932979 D1 DE69932979 D1 DE 69932979D1 DE 69932979 T DE69932979 T DE 69932979T DE 69932979 T DE69932979 T DE 69932979T DE 69932979 D1 DE69932979 D1 DE 69932979D1
Authority
DE
Germany
Prior art keywords
halftones
toric
filters
printing halftone
halftone
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
DE69932979T
Other languages
English (en)
Other versions
DE69932979T2 (de
Inventor
Qian Lin
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 DE69932979D1 publication Critical patent/DE69932979D1/de
Application granted granted Critical
Publication of DE69932979T2 publication Critical patent/DE69932979T2/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
    • H04N1/405—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
DE69932979T 1998-07-31 1999-06-10 Drucken gerasterter Halbtöne unter Verwendung von torischen Filtern Expired - Lifetime DE69932979T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/127,927 US6335989B1 (en) 1998-07-31 1998-07-31 Halftone printing using donut filters
US127927 1998-07-31

Publications (2)

Publication Number Publication Date
DE69932979D1 true DE69932979D1 (de) 2006-10-12
DE69932979T2 DE69932979T2 (de) 2007-02-22

Family

ID=22432673

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69932979T Expired - Lifetime DE69932979T2 (de) 1998-07-31 1999-06-10 Drucken gerasterter Halbtöne unter Verwendung von torischen Filtern

Country Status (4)

Country Link
US (1) US6335989B1 (de)
EP (1) EP0977424B1 (de)
JP (1) JP3933354B2 (de)
DE (1) DE69932979T2 (de)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6710778B2 (en) * 2001-02-12 2004-03-23 Lexmark International, Inc. Method for halftoning using a difference weighting function
EP1262942A1 (de) * 2001-06-01 2002-12-04 Deutsche Thomson-Brandt Gmbh Verfahren und Vorrichtung zur Verarbeitung von auf einem Bildschirm dargestellten Videodaten
US7280246B2 (en) * 2003-02-12 2007-10-09 Marvell International Technology Ltd. Laser print apparatus that generates pulse width value and justification value based on pixels in a multi-bit image
US7420709B2 (en) 2003-04-30 2008-09-02 Hewlett-Packard Development Company, L.P. Dither matrix generation
US7365883B2 (en) * 2004-01-09 2008-04-29 Hewlett-Packard Development Company, L.P. Dither matrix design using sub-pixel addressability
JP2006229264A (ja) * 2004-02-09 2006-08-31 Sharp Corp 適応型ディザー構造のための方法およびシステム
JP2005252893A (ja) * 2004-03-05 2005-09-15 Fuji Photo Film Co Ltd 閾値マトリクス
JP4143560B2 (ja) * 2004-03-05 2008-09-03 富士フイルム株式会社 閾値マトリクスの作成方法及びその装置
JP2005286999A (ja) * 2004-03-05 2005-10-13 Fuji Photo Film Co Ltd 閾値マトリクスの割当方法
JP2005252888A (ja) * 2004-03-05 2005-09-15 Fuji Photo Film Co Ltd 閾値マトリクスの作成方法及びその閾値マトリクス並びにカラー画像の再現方法
KR100561372B1 (ko) * 2004-09-10 2006-03-17 삼성전자주식회사 인간의 시각 특성과 프린터 모델 특성에 기초한 집중형도트 스크린 설계방법 및 장치, 그리고 설계된 스크린을이용하여 이진영상을 출력하는 화상형성장치
KR100625544B1 (ko) 2004-11-11 2006-09-20 엘지전자 주식회사 플라즈마 표시 패널의 화상처리방법 및 화상처리장치
US9167130B2 (en) * 2004-11-12 2015-10-20 Hewlett-Packard Development Company, L.P. AM-FM halftone screen design
JP4241632B2 (ja) * 2005-01-25 2009-03-18 富士フイルム株式会社 色版作成用閾値マトリクスの作成方法、カラー画像の再現方法、カラー画像分版作成装置及び閾値マトリクス
KR100645442B1 (ko) * 2005-07-25 2006-11-14 삼성전자주식회사 칼라 하프톤 스크린 설계 방법 및 그 장치
US20070070427A1 (en) * 2005-08-18 2007-03-29 Lexmark International, Inc. Systems and methods for selective dithering using pixel classification
US20070269123A1 (en) * 2006-05-16 2007-11-22 Randall Don Briggs Method and apparatus for performing image enhancement in an image processing pipeline
JP6688468B2 (ja) * 2017-03-23 2020-04-28 京セラドキュメントソリューションズ株式会社 ディザマトリックス生成方法、ディザマトリックス生成装置、画像処理装置及びディザマトリックス生成プログラム

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5027078A (en) * 1989-10-10 1991-06-25 Xerox Corporation Unscreening of stored digital halftone images by logic filtering
JPH0563996A (ja) * 1991-09-02 1993-03-12 Ricoh Co Ltd 画像処理装置
US5317418A (en) * 1993-05-11 1994-05-31 Hewlett-Packard Company Halftone images using special filters
US5568572A (en) * 1994-07-01 1996-10-22 Seiko Epson Corporation Method and apparatus for tonal correction in binary printing devices by predistortion of image data
US5592592A (en) * 1994-07-01 1997-01-07 Seiko Epson Corporation Method and apparatus for minimizing artifacts in images produced by error diffusion halftoning utilizing ink reduction processing
JPH10505473A (ja) * 1994-07-29 1998-05-26 ザ、ハーレクィン、グループ、リミテッド 規則的配置の輝度クラスタを使用した画像表示
US5832122A (en) * 1995-03-24 1998-11-03 Fuji Photo Film Co., Ltd. Method of processing image data
US5966507A (en) * 1997-08-25 1999-10-12 Hewlett-Packard Company Image resolution enhancement technology (IRET) for dual dye-load inkjet printer

Also Published As

Publication number Publication date
JP3933354B2 (ja) 2007-06-20
EP0977424A2 (de) 2000-02-02
EP0977424A3 (de) 2004-07-14
JP2000059624A (ja) 2000-02-25
DE69932979T2 (de) 2007-02-22
US6335989B1 (en) 2002-01-01
EP0977424B1 (de) 2006-08-30

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Legal Events

Date Code Title Description
8327 Change in the person/name/address of the patent owner

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

8364 No opposition during term of opposition