JPS6480992A - Color data compression - Google Patents

Color data compression

Info

Publication number
JPS6480992A
JPS6480992A JP62239460A JP23946087A JPS6480992A JP S6480992 A JPS6480992 A JP S6480992A JP 62239460 A JP62239460 A JP 62239460A JP 23946087 A JP23946087 A JP 23946087A JP S6480992 A JPS6480992 A JP S6480992A
Authority
JP
Japan
Prior art keywords
color
color data
data
appearance
mapping processing
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.)
Granted
Application number
JP62239460A
Other languages
Japanese (ja)
Other versions
JP2621224B2 (en
Inventor
Tetsujiro Kondo
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.)
Sony Corp
Original Assignee
Sony Corp
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
Priority to JP62239460A priority Critical patent/JP2621224B2/en
Application filed by Sony Corp filed Critical Sony Corp
Priority to EP88304544A priority patent/EP0292284B1/en
Priority to DE88304544T priority patent/DE3886817T2/en
Priority to US07/195,774 priority patent/US5142272A/en
Priority to AT88304544T priority patent/ATE99821T1/en
Priority to AU16479/88A priority patent/AU607218B2/en
Priority to CA000567346A priority patent/CA1333421C/en
Priority to KR1019880006009A priority patent/KR970002145B1/en
Publication of JPS6480992A publication Critical patent/JPS6480992A/en
Application granted granted Critical
Publication of JP2621224B2 publication Critical patent/JP2621224B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Image Processing (AREA)
  • Color Image Communication Systems (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

PURPOSE: To improve color expression also in a large difference part of color data and to sharply improve comprehensive picture quality by selecting plural representative color data preferentially in accordance with the higher frequency of appearance and executing adaptive mapping processing by using these representative color data. CONSTITUTION: Color display data dd are restored to 24 bits in each original pixel, i.e., three primary color data R', G', B' consisting of 8 bits in each color, respective color data R', G', B' are sent to respective D/A converters 32R, 32G, 32B and converted into analog three primary color signals. In the case of executing adaptive mapping processing for color data compression, pixels of which inter-adjacent pixel differences are larger than a prescribed threshold are previously found out, the appearance frequency of colors corresponding to these pixels in respective divided areas of color space is found out and color data are used for representative color mapping processing preferentially in accordance with the higher frequency of appearance. Consequently color expression can be improved even in a large difference part of color data and comprehensive picture quality can be improved.
JP62239460A 1987-05-21 1987-09-24 Color data compression method Expired - Lifetime JP2621224B2 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP62239460A JP2621224B2 (en) 1987-09-24 1987-09-24 Color data compression method
DE88304544T DE3886817T2 (en) 1987-05-21 1988-05-19 Color image signal processing method and apparatus.
US07/195,774 US5142272A (en) 1987-05-21 1988-05-19 Method and apparatus for processing display color signal
AT88304544T ATE99821T1 (en) 1987-05-21 1988-05-19 METHOD AND DEVICE FOR COLOR IMAGE SIGNAL PROCESSING.
EP88304544A EP0292284B1 (en) 1987-05-21 1988-05-19 Method and apparatus for processing display colour signal
AU16479/88A AU607218B2 (en) 1987-05-21 1988-05-20 Method and apparatus for processing display color signal
CA000567346A CA1333421C (en) 1987-05-21 1988-05-20 Method and apparatus for processing display color signal
KR1019880006009A KR970002145B1 (en) 1987-05-21 1988-05-21 Method and apparatus for processing display color signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62239460A JP2621224B2 (en) 1987-09-24 1987-09-24 Color data compression method

Publications (2)

Publication Number Publication Date
JPS6480992A true JPS6480992A (en) 1989-03-27
JP2621224B2 JP2621224B2 (en) 1997-06-18

Family

ID=17045091

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62239460A Expired - Lifetime JP2621224B2 (en) 1987-05-21 1987-09-24 Color data compression method

Country Status (1)

Country Link
JP (1) JP2621224B2 (en)

Also Published As

Publication number Publication date
JP2621224B2 (en) 1997-06-18

Similar Documents

Publication Publication Date Title
TW338824B (en) Wide gamut display driver
EP0366309A3 (en) Colour image quantization system
CA2044118A1 (en) Adaptive motion compensation for digital television
IE891366L (en) Method and system for compressing color video encoded data
ATE91582T1 (en) ENCODING OF SIGNALS.
EP1589766A3 (en) Object-based video decompression process employing arbitrarily shaped features
CA2087802A1 (en) Arrangement of encoding motion image signals using motion compensation and orthogonal transformation
KR970005225B1 (en) System and method for color image enhancement
EP1235423A3 (en) Reduction of dependence of color appearance on light source
CA2077289A1 (en) Converting lines to other colors
EP0395264A3 (en) Motion dependent video signal processing
WO1999034321A3 (en) Producing an enhanced raster image
CA2044558A1 (en) Methods and apparatus for cymk-rgb ramdac
EP0953941A3 (en) Method for quantizing colors using hue, min, max, difference (HMMD) color space
CA2259074A1 (en) Image processing method and apparatus
CA2187018A1 (en) Video image colour encoding
CA2010637A1 (en) Binary image reduction method
CA2095756A1 (en) Method and apparatus for linear color processing
MY117128A (en) Video encoding method, system and computer program product for optimizing center of picture quality.
CA2217750A1 (en) Cluster dot halftoning system
JPS6480992A (en) Color data compression
GB2016238A (en) Facsimile reproduction of coloured pictures
CA2027337A1 (en) Nonlinear rgb video signal processing
JPS6412381A (en) Picture information conversion method
CA2078490A1 (en) Dpcm predictive encoder

Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term
FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080404

Year of fee payment: 11