CA2050289A1 - Methode et dispositif de separation demi-teinte dans les images en couleurs - Google Patents

Methode et dispositif de separation demi-teinte dans les images en couleurs

Info

Publication number
CA2050289A1
CA2050289A1 CA002050289A CA2050289A CA2050289A1 CA 2050289 A1 CA2050289 A1 CA 2050289A1 CA 002050289 A CA002050289 A CA 002050289A CA 2050289 A CA2050289 A CA 2050289A CA 2050289 A1 CA2050289 A1 CA 2050289A1
Authority
CA
Canada
Prior art keywords
screen
matrix
color
values
cell
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.)
Abandoned
Application number
CA002050289A
Other languages
English (en)
Inventor
Marcel Coderch Collell
Vicente Sosa Trivino
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.)
Grupo Anaya SA
COLOR GROUP (THE)
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2050289A1 publication Critical patent/CA2050289A1/fr
Abandoned 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
    • H04N1/46—Colour picture communication systems
    • H04N1/52—Circuits or arrangements for halftone screening

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Color, Gradation (AREA)
CA002050289A 1989-03-07 1990-03-07 Methode et dispositif de separation demi-teinte dans les images en couleurs Abandoned CA2050289A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US32007289A 1989-03-07 1989-03-07
US320,072 1989-03-07
PCT/US1990/001248 WO1990010991A1 (fr) 1989-03-07 1990-03-07 Procede et appareil de separation de demi-teintes lors du traitement d'images en couleurs

Publications (1)

Publication Number Publication Date
CA2050289A1 true CA2050289A1 (fr) 1990-09-08

Family

ID=23244755

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002050289A Abandoned CA2050289A1 (fr) 1989-03-07 1990-03-07 Methode et dispositif de separation demi-teinte dans les images en couleurs

Country Status (3)

Country Link
EP (1) EP0465558A4 (fr)
CA (1) CA2050289A1 (fr)
WO (1) WO1990010991A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6072592A (en) * 1991-08-13 2000-06-06 Megadot Systems Limited Method and apparatus for preparing color screens in a halftone image
NZ239389A (en) * 1991-08-13 1997-11-24 Megadot Systems Ltd Preparing half tone images: dots have inwardly curved edges
EP0652671A3 (fr) * 1993-11-05 1995-06-21 Ibm Conversion d'images numériques en couleurs.
US7268920B1 (en) 1999-03-16 2007-09-11 Megadot Systems Limited Halftone patterns
EP1370066A1 (fr) 2002-06-05 2003-12-10 Océ-Technologies B.V. Procédé et système pour le traitement d'une image en plusieurs couleurs
EP1370067B1 (fr) * 2002-06-05 2015-01-21 Océ-Technologies B.V. Procédé et système pour le traitement d'une image en plusieurs couleurs

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3911480A (en) * 1972-12-08 1975-10-07 John P Brucker Generating screened half-tones by scanning
US4456924A (en) * 1980-04-14 1984-06-26 Scitex Corporation Ltd. Screened image reproduction
US4507685A (en) * 1982-06-25 1985-03-26 Canon Kabushiki Kaisha Image recording device
JPS5977769A (ja) * 1982-10-27 1984-05-04 Canon Inc 像再生装置
US4533941A (en) * 1983-01-14 1985-08-06 Coulter Systems Corporation Method and apparatus for half-tone reproduction of a varying tone original image
US4752822A (en) * 1983-03-08 1988-06-21 Canon Kabushiki Kaisha Color halftone image processing apparatus producing various screen angles and having an adaptive color image data conversion look-up table and a small-capacity masking memory
JPS60113582A (ja) * 1983-11-24 1985-06-20 Ricoh Co Ltd 中間調画像処理方法
US4680625A (en) * 1984-07-18 1987-07-14 Konishiroku Photo Industry Co., Ltd. Method and apparatus for multicolor image forming
GB8613223D0 (en) * 1986-05-30 1986-07-02 Crosfield Electronics Ltd Half-tone reproduction
JP2621856B2 (ja) * 1986-06-06 1997-06-18 株式会社リコー デジタルカラー画像再生処理方法および装置

Also Published As

Publication number Publication date
WO1990010991A1 (fr) 1990-09-20
EP0465558A4 (en) 1992-10-28
EP0465558A1 (fr) 1992-01-15

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Legal Events

Date Code Title Description
FZDE Discontinued