HK53694A - Method and apparatus for non-linear dithering of digital images - Google Patents

Method and apparatus for non-linear dithering of digital images

Info

Publication number
HK53694A
HK53694A HK53694A HK53694A HK53694A HK 53694 A HK53694 A HK 53694A HK 53694 A HK53694 A HK 53694A HK 53694 A HK53694 A HK 53694A HK 53694 A HK53694 A HK 53694A
Authority
HK
Hong Kong
Prior art keywords
digital images
dithering
linear
linear dithering
images
Prior art date
Application number
HK53694A
Other languages
English (en)
Inventor
Stuart C Wells
Grant J Williamson
Original Assignee
Sun Microsystems 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
Application filed by Sun Microsystems Inc filed Critical Sun Microsystems Inc
Publication of HK53694A publication Critical patent/HK53694A/xx

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
    • 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
    • H04N1/4055—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a clustered dots or a size modulated halftone pattern
    • H04N1/4057—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a clustered dots or a size modulated halftone pattern the pattern being a mixture of differently sized sub-patterns, e.g. spots having only a few different diameters

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Controls And Circuits For Display Device (AREA)
HK53694A 1989-09-28 1994-05-24 Method and apparatus for non-linear dithering of digital images HK53694A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/413,991 US5371515A (en) 1989-09-28 1989-09-28 Method and apparatus for non-linear dithering of digital images

Publications (1)

Publication Number Publication Date
HK53694A true HK53694A (en) 1994-06-03

Family

ID=23639498

Family Applications (1)

Application Number Title Priority Date Filing Date
HK53694A HK53694A (en) 1989-09-28 1994-05-24 Method and apparatus for non-linear dithering of digital images

Country Status (5)

Country Link
US (1) US5371515A (fr)
JP (1) JP2979485B2 (fr)
CA (1) CA2026543C (fr)
GB (1) GB2236464B (fr)
HK (1) HK53694A (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5508822A (en) * 1992-10-15 1996-04-16 Digital Equipment Corporation Imaging system with multilevel dithering using single memory
US5535020A (en) * 1992-10-15 1996-07-09 Digital Equipment Corporation Void and cluster apparatus and method for generating dither templates
US5877754A (en) * 1993-06-16 1999-03-02 Intel Corporation Process, apparatus, and system for color conversion of image signals
US5917962A (en) * 1995-06-06 1999-06-29 Apple Computer, Inc. Method and apparatus for partitioning an image
US5798767A (en) * 1996-03-15 1998-08-25 Rendition, Inc. Method and apparatus for performing color space conversion using blend logic
JP2885239B1 (ja) * 1998-02-27 1999-04-19 日本電気株式会社 画像処理装置
DE60001143T2 (de) * 1999-10-29 2003-10-16 Ricoh Co., Ltd. Bildverarbeitungsvorrichtung und -verfahren und Aufzeichnungsmedium
EP1391865A1 (fr) * 2002-08-23 2004-02-25 Deutsche Thomson-Brandt Gmbh Ecran à plasma (PDP) - réduction du bruit de superposition pour affichage d'un signal avec un nombre réduit de niveau de gris
TWI258109B (en) * 2004-11-03 2006-07-11 Realtek Semiconductor Corp Method and apparatus for non-linear dithering of images
US7869094B2 (en) * 2005-01-07 2011-01-11 Mitcham Global Investments Ltd. Selective dithering
GB0702977D0 (en) * 2007-02-15 2007-03-28 Magink Display Technologies In Driving of a cholesteric liquid display apparatus
US8013858B2 (en) * 2007-09-20 2011-09-06 Spx Corporation Statistical waveform drawing routine
KR101367282B1 (ko) * 2007-12-21 2014-03-12 삼성전자주식회사 깊이 정보에 대한 적응적 정보 표현 방법 및 그 장치
EP3754962B1 (fr) * 2014-07-01 2022-12-21 Canon Kabushiki Kaisha Appareil de traitement d'image, procédé de traitement d'image, support d'impression et support d'enregistrement
US9818336B2 (en) 2016-03-22 2017-11-14 Snaptrack Inc. Vector dithering for displays employing subfields having unevenly spaced gray scale values

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3997719A (en) * 1975-03-19 1976-12-14 Bell Telephone Laboratories, Incorporated Bi-level display systems
US4706077A (en) * 1981-09-08 1987-11-10 Xerox Corporation Halftoning implementation for interactive image editing
JPS59111471A (ja) * 1982-12-17 1984-06-27 Ricoh Co Ltd 画像処理方法
US4736254A (en) * 1984-11-22 1988-04-05 Matsushita Electric Industrial Co., Ltd. Method and apparatus for generating pseudo-halftone dots by comparing gray scale values of an original with dither threshold values stored in cells of a matrix array divided into imaginary matrices of elemental areas each containing one cell
NL8602712A (nl) * 1986-10-29 1988-05-16 Oce Nederland Bv Werkwijze voor het reconstrueren van een dithermatrix.
US4823189A (en) * 1987-05-08 1989-04-18 Tektronix, Inc. Method and apparatus for creating a dither pattern

Also Published As

Publication number Publication date
GB9010474D0 (en) 1990-07-04
US5371515A (en) 1994-12-06
CA2026543A1 (fr) 1991-03-29
CA2026543C (fr) 2002-02-26
JPH03120957A (ja) 1991-05-23
GB2236464A (en) 1991-04-03
GB2236464B (en) 1993-11-17
JP2979485B2 (ja) 1999-11-15

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20040510