Research on the Evaluation of Color Space and Developing Three Dimensional Color Simulator.

这项研究的主要目的是收集关于颜色认知的准确和基本的数据，以便调查最适合色盲者和老年人的颜色环境，特别是在城市公共空间。本研究由两部分组成。首先是开发一种“三维色彩可及性模拟器”，它能够通过使用立体视觉来虚拟地认识我们在实验室中尽可能自然的周围环境。二是在受控条件下对色彩空间进行评价。在2004年、2005年和2006年第一季度，我们调查了最合适的拍摄、处理和投影设备的组合，以实现自然图像，尽可能准确和自然地显示任意两个对象之间的距离、对象的大小和视角。考虑到系统的性能要求，我们将距离范围分为近距离(2m-5m)、中距离(5m-20m)和远距离(20m以上)，并分别开发了一些原型，利用这些原型建立了在5m-20m范围内拍摄、编辑和投影立体图像的标准系统，这是研究城市公共空间中物体的最有效的距离，例如街道的角落。我们建立了在图像中对特定对象进行颜色模拟的标准程序，如路标、街道地图、指示地铁入口和公交站的标语。两组受试者，老年人(65岁以上)和年轻人(19-21岁)，评估了物体的原始颜色和模拟颜色。由于三维色彩可及性模拟器能够同时向一定数量的受试者展示虚拟空间，因此我们未来的工作是收集更多的数据来对标志的颜色组合进行分类，并为老年人和色盲找到一些安全的颜色。

The main purpose of the research is to collect precise and fundamental data on color cognition in order to investigate most suitable color environment, especially in urban public spaces, for persons with color blindness and older persons. The research consists of two parts. The first is to develop a "three dimensional color accessibility simulator", which is capable to virtually realize our surroundings in the lab as natural as possible by using stereoscopy. The second is to evaluate color spaces under controlled conditions. For this purpose, a number of testee's commitment is expected.In 2004, 2005 and in the first quarter of 2006, we investigated to find out the most suitable combination of shooting, processing and projecting equipment for realizing natural images which show the distance between any two subjects, the sizes of subjects and the perspectives as precisely and naturally as possible. To consider the specification of the system, we divide distance range into three parts, such as near range (2m-5m), middle range (5m-20m) and far range (over 20m), We also developed some prototypes respectively.By using these prototypes, we established the standard system to take, to edit and to project stereo images in the range among 5m to 20m, which is the most effective range to investigate objects in urban public spaces, corners of streets for example. We established the standard procedure for color simulation on certain objects in images, such as road signs, street maps, sings to indicate subway entrance and bus stops. The two groups of testees, the elderly (over 65) and the young (19-21), evaluated original colors and simulated colors of objects. This data is currently being analyzed.As the three-dimensional color accessibility simulator is able to show virtual space to some number of testees simultaneously, our future work is to collect more data to classify combination of colors of signs for example and to find some safe colors for the elderly and the color blind.