EP0319684A3 - Display system for color image quantization - Google Patents

Display system for color image quantization Download PDF

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Publication number
EP0319684A3
EP0319684A3 EP19880117468 EP88117468A EP0319684A3 EP 0319684 A3 EP0319684 A3 EP 0319684A3 EP 19880117468 EP19880117468 EP 19880117468 EP 88117468 A EP88117468 A EP 88117468A EP 0319684 A3 EP0319684 A3 EP 0319684A3
Authority
EP
European Patent Office
Prior art keywords
color
image
component
color values
buffer
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.)
Withdrawn
Application number
EP19880117468
Other languages
German (de)
French (fr)
Other versions
EP0319684A2 (en
Inventor
Eldon John Thompson
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.)
Honeywell Inc
Original Assignee
Honeywell 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 Honeywell Inc filed Critical Honeywell Inc
Publication of EP0319684A2 publication Critical patent/EP0319684A2/en
Publication of EP0319684A3 publication Critical patent/EP0319684A3/en
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
    • G09G5/06—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed using colour palettes, e.g. look-up tables
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
    • G09G5/022—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed using memory planes

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Digital Computer Display Output (AREA)
  • Image Generation (AREA)
  • Color Television Systems (AREA)

Abstract

An apparatus for displaying video color images and minimizing buffer memory size quantizes a video image into a reduced number of corresponding color values. A lookup table (16) for driving a refresh buffer is encoded with a set of neighboring color values for transforming a three component color video signal to two-­ component format. The two-component signals are stored in a frame buffer (20) of reduced capacity sufficient to store the quantized color image. When addressed by a raster scan (21) the frame buffer is read out into a second lookup table (22) for converting the quantized image into a reduced set of color values. Since no intermediate computing or processing is required, the transformation is accomplished in real time, allowing contemporaneous color display while reducing buffer memory size demands.
EP19880117468 1987-10-23 1988-10-20 Display system for color image quantization Withdrawn EP0319684A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11188787A 1987-10-23 1987-10-23
US111887 1987-10-23

Publications (2)

Publication Number Publication Date
EP0319684A2 EP0319684A2 (en) 1989-06-14
EP0319684A3 true EP0319684A3 (en) 1991-02-06

Family

ID=22340973

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880117468 Withdrawn EP0319684A3 (en) 1987-10-23 1988-10-20 Display system for color image quantization

Country Status (3)

Country Link
EP (1) EP0319684A3 (en)
JP (1) JPH0292A (en)
IL (1) IL88097A0 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5081450A (en) * 1990-03-09 1992-01-14 International Business Machines Corporation Apparatus and method for compressing and expanding multibit digital pixel data
JP3164379B2 (en) * 1990-06-27 2001-05-08 テキサス インスツルメンツ インコーポレイテツド Pallet equipment
JPH04261796A (en) * 1991-02-13 1992-09-17 Nachi Fujikoshi Corp Hose built-in type robot arm
JP3138838B2 (en) * 1992-04-30 2001-02-26 東レ・ダウコーニング・シリコーン株式会社 Manufacturing method of mixed powder
JP2002133405A (en) 2000-10-23 2002-05-10 Nec Corp Image data registering method
EP1887785A1 (en) * 2006-08-04 2008-02-13 Nederlandse Organisatie voor Toegepast-Natuuurwetenschappelijk Onderzoek TNO Method and system for converting at least one first-spectrum image into a second-spectrum image
JP5523812B2 (en) 2009-12-16 2014-06-18 株式会社リコー Kneading apparatus and toner manufacturing method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0132641A2 (en) * 1983-07-20 1985-02-13 DORNIER SYSTEM GmbH Device for converting colour television pictures into coarse raster graphics with a limited resolution and with a limited number of colour tones which can be used simultaneously
US4639771A (en) * 1984-10-31 1987-01-27 Kabushiki Kaisha Toshiba Image processing system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0132641A2 (en) * 1983-07-20 1985-02-13 DORNIER SYSTEM GmbH Device for converting colour television pictures into coarse raster graphics with a limited resolution and with a limited number of colour tones which can be used simultaneously
US4639771A (en) * 1984-10-31 1987-01-27 Kabushiki Kaisha Toshiba Image processing system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SYSTEMS AND COMPUTERS IN JAPAN, vol. 19, no. 3, March 1988, pages 73-78, NY, US; T. AGUI et al.: "Speed-up algorithm of color image quantization" *

Also Published As

Publication number Publication date
EP0319684A2 (en) 1989-06-14
JPH0292A (en) 1990-01-05
IL88097A0 (en) 1989-06-30

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