Integrated 3-D Visual Communication as the Next Generation Information Environment

这个开创性的项目旨在实现作为下一代信息环境的集成三维视觉通信。本课题的主要研究成果如下：1.集成三维视觉传达的提出由于许多关于三维图像处理的工作都是专门针对相应的三维显示技术的，我们提出了一个新的概念“集成三维视觉传达”，其中任何一种三维图像都以相同的方式表示。并指出了实现这种与显示无关的表示必须解决的一些技术问题.表示3-D图像我们研究了用于表示3-D图像的“基于光线”的方法，该方法对于任何类型的输入系统都是中性的。并对平面、柱面和球面三种表示方法进行了阐述和比较. 3-D图像的采样由于2-D图像可以被视为一组光线，因此我们可以将捕获2-D图像的过程视为对光线数据进行采样的过程。从这个角度来看，我们提出了一种新的方法，用于采样的三维空间数据，使用计算机控制的摄像机机架。我们还研究了一种从三维图像中估计相机参数的方法.三维图象的压缩我们提出了一种多维离散余弦变换（DCT）的光线数据压缩方法。在所提出的方法中，三维图像可以在真实的时间解码。因此，我们可以通过该方法开发一些交互式应用程序.三维图像的结构化我们提出了一些三维图像的结构化方法。一种是从输入的三维图像中恢复结构的方法，另一种是基于光线数据结构化的新概念. 3D图像我们研究了如何在沉浸式虚拟环境中显示3D图像。

This pioneering project is aiming to realize the Integrated 3-D Visual Communication as the next-generation information environment. The results of the project are as follows :1. Proposal of the Integrated 3-D Visual CommunicationSince many works on 3-D image processing have been specialized just for the corresponding 3-D display technologies, we proposed a novel concept of the "Integrated 3-D Visual Communication", in which any kind of 3-D image is represented in the same way. We also pointed out some technological problems which must be solved for the realization of this display-independent representation.2. Representing 3-D ImagesWe investigated the "Ray-Based" method for representing 3-D images, which is neutral for any kind of input system. We also formulated and compared three methods, such as planer, cylindrical and spherical representation.3. Sampling of 3-D ImagesSince a 2-D image can be regarded as a set of light rays, we can see the process of capturing 2-D images as that of sampling light ray data. From this point of view, we proposed a novel method for sampling 3-D spatial data using computer-controlled camera gantry. We also investigated a method for estimating camera parameters from 3-D images.4. Compression of 3-D ImagesWe proposed a multi-dimensional DCT (discrete cosine transform) method for the compression of light ray data. In the proposed method, 3-D images can be decoded in real time. So we can develop some interactive applications by the method.5. Structurization of 3-D ImagesWe proposed some methods for structurizing 3-D images. One is the structure recovery method from 3-D image input, and another is based on the novel concept of structurization of light ray data.6. Displaying 3-D ImagesWe investigated how to display 3-D images in an immersive virtual environment.