JPH04196678A - Method of estimating color - Google Patents

Method of estimating color

Info

Publication number
JPH04196678A
JPH04196678A JP32168890A JP32168890A JPH04196678A JP H04196678 A JPH04196678 A JP H04196678A JP 32168890 A JP32168890 A JP 32168890A JP 32168890 A JP32168890 A JP 32168890A JP H04196678 A JPH04196678 A JP H04196678A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
color
saturation
cube
input side
side color
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.)
Pending
Application number
JP32168890A
Inventor
Toru Hoshino
Original Assignee
Konica 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

Links

Abstract

PURPOSE: To obtain balance of saturation in an excellent way by deviating a hue of a peak of each color of an input side color cube in a direction of a peak of a color corresponding to an output side color cube in the case of compressing the saturation of the input side color cube.
CONSTITUTION: The L* among a representing color system is converted in response to a spread ratio of the lightness on an achromatic color axis of an input side color cube and an output side color cube in relation to the direction of the lightness, the lightness of the input side color cube is compressed and mapped. In relation to the saturation direction, no conversion is implemented in the middle at a part where the color reproduction range of the input side color cube and the output side color cube and u*, v* or a*, b* among the value of the representing color system are converted in response to the spread of the saturation of the two color cubes at the circumference part and the saturation of the input side color cube is expanded and mapped. Moreover, when the saturation of the input side color cube is expanded and mapped, the hue of the peak of each color of the input side color cube is deviated in a direction of the color peak corresponding to the output side color cube. The color reproduction has a range of sufficient lightness and saturation and the entire saturation is well balanced.
COPYRIGHT: (C)1992,JPO&Japio
JP32168890A 1990-11-26 1990-11-26 Method of estimating color Pending JPH04196678A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP32168890A JPH04196678A (en) 1990-11-26 1990-11-26 Method of estimating color

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP32168890A JPH04196678A (en) 1990-11-26 1990-11-26 Method of estimating color
US07796251 US5317426A (en) 1990-11-26 1991-11-22 Color estimation method for expanding a color image for reproduction in a different color gamut
EP19910310893 EP0488656A2 (en) 1990-11-26 1991-11-26 Colour transformation method

Publications (1)

Publication Number Publication Date
JPH04196678A true true JPH04196678A (en) 1992-07-16

Family

ID=18135317

Family Applications (1)

Application Number Title Priority Date Filing Date
JP32168890A Pending JPH04196678A (en) 1990-11-26 1990-11-26 Method of estimating color

Country Status (1)

Country Link
JP (1) JPH04196678A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6160912A (en) * 1996-05-24 2000-12-12 Fuji Photo Film Co., Ltd. Method of correcting color conversion data with accuracy
US7167275B2 (en) 2000-10-06 2007-01-23 Seiko Epson Corporation Image processing apparatus, image processing method, program, and recording medium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6160912A (en) * 1996-05-24 2000-12-12 Fuji Photo Film Co., Ltd. Method of correcting color conversion data with accuracy
US7167275B2 (en) 2000-10-06 2007-01-23 Seiko Epson Corporation Image processing apparatus, image processing method, program, and recording medium

Similar Documents

Publication Publication Date Title
JPH0296880A (en) Picture processor
JPS59171276A (en) Picture processing device
JPS60105376A (en) Color picture output device
JPS62200889A (en) Encoding or/and decoding device for color video signal
JPS6340472A (en) Picture quality controller
JPH04152788A (en) Contrast circuit
JPS59163995A (en) Hue adjusting device
JPS61288662A (en) Color picture signal processing method
JPH03293864A (en) Contour emphasizing method
JPH01204528A (en) A/d converter
JPH0440118A (en) Quantizer
JPS63174472A (en) Color image processing device
JPH01207885A (en) Picture gradation control system
JPH04159803A (en) Power amplifier
JPH02291778A (en) Color converter
DE3328111A1 (en) Quasi-instantaneous-value compander
JPH01152894A (en) Time division switch connection system
JPS61277269A (en) Color picture reader
JPS53106522A (en) Index system color television receiver
JPH034832A (en) Electronic endoscope device
JPS6376687A (en) Adaptation type difference encoding system
JPS60212067A (en) Signal processor
JPH02113672A (en) Luminance signal processing circuit
JPS61152185A (en) Scan converting circuit
JPH03148919A (en) Over sampling type ad converter