DE69737273D1 - Verfahren und System zur Verringerung der Graupegel eines Bildelements - Google Patents
Verfahren und System zur Verringerung der Graupegel eines BildelementsInfo
- Publication number
- DE69737273D1 DE69737273D1 DE69737273T DE69737273T DE69737273D1 DE 69737273 D1 DE69737273 D1 DE 69737273D1 DE 69737273 T DE69737273 T DE 69737273T DE 69737273 T DE69737273 T DE 69737273T DE 69737273 D1 DE69737273 D1 DE 69737273D1
- Authority
- DE
- Germany
- Prior art keywords
- reducing
- picture element
- gray levels
- gray
- levels
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Facsimile Image Signal Circuits (AREA)
- Image Processing (AREA)
- Color, Gradation (AREA)
- Dot-Matrix Printers And Others (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/660,041 US5903361A (en) | 1996-06-06 | 1996-06-06 | Method and system for processing image information using background error diffusion |
US660041 | 1996-06-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69737273D1 true DE69737273D1 (de) | 2007-03-15 |
DE69737273T2 DE69737273T2 (de) | 2007-06-28 |
Family
ID=24647882
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69737273T Expired - Lifetime DE69737273T2 (de) | 1996-06-06 | 1997-06-04 | Verfahren und System zur Verringerung der Graupegel eines Bildelements |
Country Status (4)
Country | Link |
---|---|
US (1) | US5903361A (de) |
EP (1) | EP0812103B1 (de) |
JP (1) | JP4068181B2 (de) |
DE (1) | DE69737273T2 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19912191C2 (de) † | 1999-03-18 | 2001-07-26 | Wacker Chemie Gmbh | Verfahren zur Herstellung von wäßrigen Polymerdispersionen mit hohem Festgehalt |
US6325487B1 (en) | 1999-06-30 | 2001-12-04 | Xerox Corporation | Systems and methods for generating high addressability images |
US6608700B1 (en) | 1999-11-24 | 2003-08-19 | Xerox Corporation | Removal of error diffusion artifacts with alternating distribution weights |
US20040218220A1 (en) * | 2003-04-29 | 2004-11-04 | International Business Machines Corporation | Enhanced error diffusion |
US20050265600A1 (en) * | 2004-06-01 | 2005-12-01 | Xerox Corporation | Systems and methods for adjusting pixel classification using background detection |
US7440139B2 (en) * | 2005-01-13 | 2008-10-21 | Xerox Corporation | Systems and methods for controlling a tone reproduction curve using error diffusion |
US20070070427A1 (en) * | 2005-08-18 | 2007-03-29 | Lexmark International, Inc. | Systems and methods for selective dithering using pixel classification |
US9191551B2 (en) * | 2012-02-24 | 2015-11-17 | Apple Inc. | Pixel normalization |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4829587A (en) * | 1987-03-02 | 1989-05-09 | Digital Equipment Corporation | Fast bitonal to gray scale image scaling |
US5121447A (en) * | 1989-04-27 | 1992-06-09 | Canon Kabushiki Kaisha | Apparatus for performing gradation processing on image data |
DE69027636T2 (de) * | 1989-08-30 | 1996-11-07 | Toshiba Kawasaki Kk | Bildverarbeitungsvorrichtung |
US5410615A (en) * | 1990-09-25 | 1995-04-25 | Xerox Corporation | Bitmap image resolution converter compensating for write-white xerographic laser printing |
JP3038816B2 (ja) * | 1990-06-27 | 2000-05-08 | 株式会社リコー | 画像処理装置 |
JP2871127B2 (ja) * | 1991-01-30 | 1999-03-17 | 三菱電機株式会社 | 画像処理装置及び方法 |
US5442461A (en) * | 1991-09-03 | 1995-08-15 | Levien; Raphael L. | Screen generation for halftone screening of images with reduction of irrational correction artifacts |
JP2500834B2 (ja) * | 1991-09-05 | 1996-05-29 | ゼロックス コーポレイション | 画素値の量子化方法及び装置 |
US5258854A (en) * | 1991-12-06 | 1993-11-02 | Xerox Corporation | Converting between write-white, write-black and neutral bitmaps |
KR940005247B1 (ko) * | 1991-12-07 | 1994-06-15 | 삼성전자 주식회사 | 화상처리 시스템의 해상도 변환방법 |
US5274472A (en) * | 1992-05-21 | 1993-12-28 | Xerox Corporation | High addressability image generator using pseudo interpolation of video and screen data |
US5271070A (en) * | 1992-11-06 | 1993-12-14 | Xerox Corporation | Multi-dimensional error diffusion technique |
US5659402A (en) * | 1994-01-14 | 1997-08-19 | Mita Industrial Co., Ltd. | Image processing method and apparatus |
US5528384A (en) * | 1994-08-03 | 1996-06-18 | Xerox Corporation | System and method for implementing fast high addressability error diffusion process |
JPH1093820A (ja) * | 1996-05-30 | 1998-04-10 | Xerox Corp | 誤差拡散方法及び誤差拡散システム |
-
1996
- 1996-06-06 US US08/660,041 patent/US5903361A/en not_active Expired - Lifetime
-
1997
- 1997-06-03 JP JP14496397A patent/JP4068181B2/ja not_active Expired - Fee Related
- 1997-06-04 DE DE69737273T patent/DE69737273T2/de not_active Expired - Lifetime
- 1997-06-04 EP EP97303837A patent/EP0812103B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0812103A3 (de) | 2003-08-27 |
EP0812103A2 (de) | 1997-12-10 |
US5903361A (en) | 1999-05-11 |
DE69737273T2 (de) | 2007-06-28 |
JPH1075360A (ja) | 1998-03-17 |
EP0812103B1 (de) | 2007-01-24 |
JP4068181B2 (ja) | 2008-03-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69531080D1 (de) | System und Verfahren zur Bildkompression | |
DE69600461D1 (de) | System und Verfahren zur Bewertung der Abbildung eines Formulars | |
DE69608262D1 (de) | System und verfahren zur bildabtastung | |
DE69430872D1 (de) | System und verfahren zur sprachkompression | |
DE69709285D1 (de) | Verfahren und System zur Fernmessung | |
DE69501651D1 (de) | System und Verfahren zur Darstellung von Bildern | |
DE69418140D1 (de) | System und Verfahren zur Fernüberwachung | |
DE69405408D1 (de) | Objektorientiertes system und verfahren zur hardwarekonfiguration | |
DE69728810D1 (de) | System und Verfahren zur Lokalisierung eines Gegenstandes | |
DE69735538D1 (de) | Verfahren und system zur dynamischen erweiterung der funktionalitaet eines netz-browsers | |
DE69434657D1 (de) | System und Verfahren zur elektronischen Bildstabilisierung | |
DE69628123D1 (de) | Verfahren und Gerät zur Objektabbildung | |
DE69810910T2 (de) | System und verfahren zur automatischen aufrechterhaltung eines rechnersystems | |
DE69831290D1 (de) | System und Verfahren zur Bildübertragung | |
DE69427826D1 (de) | Verfahren und system zur reinigung von bohrlöchern | |
DE69713549D1 (de) | Gerät und Verfahren zur Bewegtbildkodierung | |
DE69608313D1 (de) | Druckempfindliche tintensysteme und verfahren zur verwendung | |
DE69424909D1 (de) | Verfahren und vorrichtung zur bildkodierung | |
DE69812800D1 (de) | Verfahren und Gerät zur Bildverbesserung | |
DE69425057D1 (de) | Vorrichtung und Verfahren zur Bildinterpolation | |
DE69632960D1 (de) | System und verfahren zur kompostierung | |
DE69423129D1 (de) | System und Verfahren zur Kurvendarstellung | |
DE69819950D1 (de) | Verfahren und System zur Bildverarbeitung | |
DE69521169D1 (de) | System und Verfahren zur diskreten Radarerkennung | |
DE69522497D1 (de) | System und Verfahren zur Datenkompression |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |