KR950002505A - Color measuring device - Google Patents

Color measuring device Download PDF

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Publication number
KR950002505A
KR950002505A KR1019940013138A KR19940013138A KR950002505A KR 950002505 A KR950002505 A KR 950002505A KR 1019940013138 A KR1019940013138 A KR 1019940013138A KR 19940013138 A KR19940013138 A KR 19940013138A KR 950002505 A KR950002505 A KR 950002505A
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KR
South Korea
Prior art keywords
color
value
conversion
image signal
colorimeter
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Application number
KR1019940013138A
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Korean (ko)
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KR970010934B1 (en
Inventor
데루오 아사에다
도모히로 호리
다다시 야가와
유따까 스즈끼
Original Assignee
쓰지 요시후미
닛산 지도샤 가부시끼가이샤
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Publication of KR950002505A publication Critical patent/KR950002505A/en
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Publication of KR970010934B1 publication Critical patent/KR970010934B1/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/50—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/52—Measurement of colour; Colour measuring devices, e.g. colorimeters using colour charts

Abstract

색이 밝기 뿐만 아니라 파장 등도 포함하여 경시변화의 보정이 되고 정밀도가 높은 측정표시가 될 수 있게 된다.Color can be corrected over time by including not only brightness but also wavelength, and it becomes a highly accurate measurement display.

화상신호 출력수단(1)에서의 측정 대상을 촬영한 RGB 화상신호를 받고, 표색치 변환수단(2)에서 RGB치를 소정의 표색치로 변환하고, 표시수단에 표시한다. 이때, 사전에 백색 교정데이터 생성수단(4) 및 색이 있는 표준판에 의한 교정데이터를 구하고, 이 교정데이터를 사용하여 변환 파라미터 산출수단(6)으로 색상마다의 변환 파라미터를 산출하고, 표색치 변환수단에서는 상기 변환 파라미터를 색상마다로 선택하여 사용하여 변환을 행한다. 변환식이 각 색마다로 독립되어 설정되기 때문에, 각 색상마다의 특성이 변환후의 표색치에 반영되고 색상에 의한 오차가 없어지는 동시에 파장성분이 경시변화도 보정된다.The RGB image signal photographing the measurement object in the image signal output means 1 is received, and the color value conversion means 2 converts the RGB value into a predetermined color value and displays it on the display means. At this time, the calibration data by the white calibration data generation means 4 and the color standard board is calculated | required in advance, and using this calibration data, the conversion parameter for every color is calculated by the conversion parameter calculation means 6, and color-value conversion The means performs the conversion by selecting and using the conversion parameter for each color. Since the conversion equation is set independently for each color, the characteristic of each color is reflected in the color value after conversion, and the error due to the color is eliminated, and the change in wavelength component over time is also corrected.

Description

색측정장치Color measuring device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명의 구성을 나타내는 블록도, 제2도는 발명의 실시예를 나타내는 도, 제3도는 실시예에 있어서의 작동을 나타내는 플로우챠트, 제4도는 L* a* b* 표색계 색도도에 있어서의 색 위치예를 나타내는 도, 제5도는 제1실시예의 변환 파라미터 산출의 상세를 나타내는 플로우챠트.1 is a block diagram showing the configuration of the present invention, FIG. 2 is a diagram showing an embodiment of the invention, FIG. 3 is a flowchart showing the operation in the embodiment, and FIG. 4 is a L * a * b * colorimetric chromaticity diagram. Fig. 5 shows an example of the color position in Fig. 5 is a flowchart showing the details of the conversion parameter calculation in the first embodiment.

Claims (6)

측정대상을 촬영하고, 그 측정색의 RGB 화상신호를 출력하는 화상신호 출력수단과, 상기 RGB 화상신호를입력하고 그 RGB치를 소정의 표색치로 변환하는 표색치 변환수단과, 상기 표색치에 의거하는 색 데이터를 표시하는 표시수단을 구비하는 색의 측정장치에 있어서,Image signal output means for photographing a measurement object and outputting an RGB image signal of the measurement color, color value conversion means for inputting the RGB image signal and converting the RGB value into a predetermined color value, and based on the color value A color measuring apparatus comprising display means for displaying color data, 백색 표준판에 대한 상기 화상신호 출력수단의 출력에 의거하여 백색 교정데이터를 생성하는 백색 교정데이터 생성수단과, 복수의 색이 있는 표준판에 대한 상기 화상신호 출력수단의 출력에 의거하여 색이 있는 교정데이터를 생성하는 색이 있는교정데이터 생성수단과, 상기 백색 교정 데이터 및 색이 있는 교정 데이터를 사용하여 색상마다의 변환 파라미터 산출수단을 가지며, 상기 표색치 변환 수단은 상기 변환 파라미터를 색상마다 선택하여 사용하고 변환을 실시하는 것을 특징으로 하는 색측정장치.White calibration data generating means for generating white calibration data based on the output of the image signal output means for the white standard plate, and color corrected data based on the output of the image signal output means for the standard plate having a plurality of colors And a color correction data generating means for generating a color and conversion parameter calculation means for each color using the white correction data and the color correction data. The color value conversion means selects and uses the conversion parameter for each color. And measuring the color. 제 1 항에 있어서, 상기 변환파라미터 산출수단은 상기 색이 있는 교정 데이터에 의하여 표색계의 표색영역을 구분하고 이 구분된 영역마다에 상기 백색교정데이터 및 색이 있는 교정데이터에서 선택한 3점의 데이터를 사용하여RGB치에서 상기 표색계에의 변환 파라미터를 산출하는 것을 특징으로 하는 색측정장치2. The apparatus according to claim 1, wherein the conversion parameter calculating means divides the color gamut of the colorimetric system by the colored calibration data, and selects three points of data selected from the white calibration data and the color calibration data for each of the divided areas. A color measuring device for calculating a conversion parameter from an RGB value to said colorimetric system 제 1 항에 있어서, 상기 표색치가 상기 표색계의 위치 좌표이고, 상기 표색치 변환수단은, 기준색의 위치에서 측정색의 위치에의 벡터의 크기와 방향에 의거하여 적색, 청색 등의 감각 표현된 언어를 상기 색데이터에 포함하여상기 표현수단으로 표시시키는 것을 특징으로 하는 색측정장치.The color coordinate value converting means is a sensory representation of red, blue, or the like based on the magnitude and direction of the vector from the position of the reference color to the position of the measurement color. And a language included in the color data and displayed by the expression means. 제 1, 2 또는 3항에 있어서, 상기 표색계는 XYZ 표색계인 것을 특징으로 하는 색측정장치.4. The color measuring apparatus according to claim 1, 2 or 3, wherein the colorimeter is an XYZ colorimeter. 제 l, 2 또는 3항에 있어서, 상기 표색계는 L* a* b* 표색계인 것을 특징으로 하는 색측정장치.4. The color measuring apparatus according to claim 1, 2 or 3, wherein the colorimeter is an L * a * b * colorimeter. 제 1, 2 또는 3항에 있어서, 상기 표색계는 L* u* v* 표색계인 것을 특징으로 하는 색측정장치.4. The color measuring apparatus according to claim 1, 2 or 3, wherein the colorimeter is an L * u * v * colorimeter. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940013138A 1993-06-11 1994-06-10 Color measuring apparatus KR970010934B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP16620193 1993-06-11
JP93-166201 1993-06-11
JP11953194A JP3389678B2 (en) 1993-06-11 1994-05-09 Color measuring device
JP94-119531 1994-05-09

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KR950002505A true KR950002505A (en) 1995-01-04
KR970010934B1 KR970010934B1 (en) 1997-07-02

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150136585A (en) 2012-10-23 2015-12-07 애플 인크. High accuracy imaging colorimeter by special designed pattern closed-loop calibration assisted by spectrograph

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19945963A1 (en) * 1999-09-24 2001-03-29 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Method and device for true color representation of colorimetrically measured light distributions
US8284260B2 (en) * 2010-03-26 2012-10-09 Sony Corporation Optimal raw RGB determination for color calibration
KR101309264B1 (en) * 2011-09-30 2013-09-16 한국식품연구원 Device and method which provides the food information and taste information corresponding to color
JP5652421B2 (en) * 2012-03-30 2015-01-14 ウシオ電機株式会社 Appearance inspection equipment for light-transmitting molded products

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20150136585A (en) 2012-10-23 2015-12-07 애플 인크. High accuracy imaging colorimeter by special designed pattern closed-loop calibration assisted by spectrograph

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JP3389678B2 (en) 2003-03-24
JPH0755569A (en) 1995-03-03

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