Measurements of individual color matching functions to solve the discrepancy in color appearance among color display devices

测量各个颜色匹配功能以解决彩色显示设备之间颜色外观的差异

基本信息

批准号：
18500160
负责人：
UCHIKAWA Keiji
金额：
$ 2.57万
依托单位：
Tokyo Institute of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2006
资助国家：
日本
起止时间：
2006 至 2007
项目状态：
已结题

项目摘要

The purpose of this study is to deal with the problem of the mismatch of the tristimulus value when the metameric match is achieved among different color devices, by assuming that the color matching functions, which can be used to calculate tristimulus value, have significant individual differences. In order to achieve our goals, we firstly need to develop a compact apparatus to measure color matching functions precisely, and a method of estimating color matching functions with our apparatus. Then we need to verify our method, followed by collecting data on many observers to clarify the individual differences and that deviation from CIE Standard Observer.We developed an apparatus that can present arbitrary combinations of the monochromatic lights with a Maximillian view system. Also we developed an algebraic method using M series to present independent sets of monochromatic lights to the observer to obtain color matching functions. By comparing our method with a traditional method, maximum saturation method, it turned out that our method is less noise-tolerant than MSM. As our method is based on the matrix operation, the noise in a specific stimulus penetrates to other parts, while in the MSM the noise is restricted to that stimulus. The satisfaction of the match, on the other hand, is much higher in our method as the reference stimulus remained constant through all the experiment.10 subjects participated in our experiment as an observer, and the estimated CMFs showed individual differences, not only in the B CMFs but also in G and R CMFs.We also conducted metameric color matching experiment between a color paper and a CRT monitor, and tried to compensate individual differences of CMFs to obtain customized tristimulus values. The color differences, or Eucrid distance, between the tristimulus values of two different media showed a trend that customized tristimulus values give smaller values than those calculated from Standard observers.

本研究的目的是通过假设可用于计算三刺激值的颜色匹配函数具有显着的个体差异，解决不同颜色设备之间实现同色异谱匹配时三刺激值不匹配的问题。。为了实现我们的目标，我们首先需要开发一种紧凑的设备来精确测量颜色匹配函数，以及一种用我们的设备估计颜色匹配函数的方法。然后我们需要验证我们的方法，然后收集许多观察者的数据，以澄清个体差异以及与 CIE 标准观察者的偏差。我们开发了一种装置，可以通过马克西米利安视图系统呈现单色光的任意组合。我们还开发了一种使用 M 系列的代数方法，向观察者呈现独立的单色光组，以获得颜色匹配函数。通过将我们的方法与传统方法（最大饱和度方法）进行比较，结果表明我们的方法的噪声容忍度低于 MSM。由于我们的方法基于矩阵运算，因此特定刺激中的噪声会渗透到其他部分，而在 MSM 中，噪声仅限于该刺激。另一方面，在我们的方法中，比赛的满意度要高得多，因为参考刺激在整个实验中保持不变。10 名受试者作为观察者参与了我们的实验，估计的 CMF 显示出个体差异，不仅在B CMF以及G和R CMF。我们还在色纸和CRT显示器之间进行了同色异谱配色实验，并尝试补偿CMF的个体差异以获得定制的三刺激值。两种不同介质的三色刺激值之间的色差或欧里德距离显示出一种趋势，即定制的三色刺激值给出的值比标准观察者计算的值更小。