Firstly, the definition of CIE tristimulus values and their numerical computation methods are reviewed. 首先回顾了国际照明委员会三刺激值的基本定义及其数值计算方法;
The computation of tristimulus values is a basic step for obtaining various colorimetric quantities. 三刺激值计算是求取各种色度量的基础。
It takes much time to detect edges of color images directly. To resolve this problem, reduce the dimensionality of color image space ( RGB), while keep the gray moments of tristimulus values invariable to reserve as much as possible the main characteristics of the original images. 针对彩色图像边缘检测计算量大的弱点,对彩色图像空间(RGB)进行三基色降维处理,保持图像的各个基色的灰度矩不变,以最大限度地保留原图像的主要特征。
Using spectral character and no fixing background mode instead of tristimulus values and CIE measure mode ia suggested. With large quantities of samples, an effective recognition function applying to examination and grading of medicine color standard is established. 提出了用光谱特征及非固定的背景模式,代替三刺激值及CIE测量模式,建立了良好的判别函数,适于药剂颜色标准的客观检验与定级,结果令人满意。
The calculation of theoretical "screen effect ''" from the viewpoint of mutual matching of spectral tristimulus values of a CIE standard colorimetric observer with color negative films and color printing papers is described in this article. 本文从彩色负片、彩色相纸与CIE标准色度观察者光谱三刺激值相匹配的角度出发,对理论银幕效果进行了推导。
Numerical simulation results show that the tristimulus values computed by using the method proposed are closest to the CIE definition compared with those computed by using the three types of ASTM weighting tables. 数值仿真表明用此方法计算的加权表较ASTM三种加权表更准确。
One os on the hand of hardware, the white field balance and r correction should be done to color tristimulus values can be provided, the other is on the hand of software, the CG calculating method of illuminating design should be developed. 一是在硬件方面,要进行彩色显示器的白场平衡和r-校正,得到正确的颜色三刺激值输出;二是在软件方面,要开发照明设计CG计算方法。
This paper proves that there is quantitative relationship between the sum of tristimulus values ( X+ Y+ Z) and dyes concentration on dyed textiles by the theoretical deduction and the experimental examination. 本文通过理论上的推论以及实验检验证明染色织物三刺激值之和(X+Y+Z)与织物上的染料量有着定量的关系。
The lighting and measuring are controlled. The tristimulus values X, Y, Z and the small change of pulse light are measured. The test results are corrected according to the small change of pulse light real time. 同步控制脉冲光源发光与电路测量,由双光路捡测系统测量颜色三刺激值X、Y、Z和脉冲光源的微小变化,并根据后者对测试结果实时修正。
Since this CIE1931 RGB system results negative tristimulus values in calculation, the CIE1931 XYZ standard colorimetric observer was brought forth. 但是,CIE1931RGB系统在计算颜色的三刺激值时会出现负值,由此产生了CIE1931XYZ标准色度系统。
Weighting Tables of CIE Tristimulus Values for Industrial Application 面向工业应用的CIE三刺激值加权表
Since the spectrum property of the three primary colors used in the color LED display screen has a great difference from that of the color television system, the same color has different tristimulus values in the two different three primary colors chrominance systems. 由于彩色LED显示屏所选用的三基色与电视系统三基色在光谱特性上有着较大差别,同一颜色在2个不同的色度系统中,其三刺激值必然不同。
The photoelectric integrating color measurement instrument can obtain the objective tristimulus values via spectral energy integration of the color to be measured by the chromatic detectors, such as the colorimeter and color-difference meter, which have wide application in industrial practice. 光电积分式测色仪器通过色度探测器对被测颜色光谱能量进行积分测量,直接获得目标的三刺激值,如色度计和色差计等,已被广泛应用于工业实践。
Based on the theory of color mixing, a large number of experimental data are analyzed and processed in the paper, with the Matlab mathematical toolbox as the modeling aided tool to elaborate the mathematical relationship between the different concentrations of dyeing sample and tristimulus values CMY. 以色彩混合原理及理论为基础,通过分析和处理大量的实验数据,以Matlab数学工具箱为建模辅助工具,阐述了在计算机配色过程中不同染料浓度与染色小样的三刺激值CMY之间的数学关系。