A Method of Construction on Virtual World

内容开发是虚拟现实研究的重要课题之一。第3组的主要目的是开发用于生成各种虚拟世界的软件工具，并调查所生成的虚拟世界的潜力。主要研究内容如下：（1）虚拟环境可视化工作台的开发：开发了一个多屏幕三维显示器，为研究人员提供高清晰度的虚拟世界作为一个通用的工作台。此外，我们开发了基本的软件库，将小组成员开发的实验软件与各种现有的软件工具集成在一起。(2)构建仿真世界的基本软件：在这个子组中，处理执行基于仿真的世界生成的基本软件。首先，我们专注于通过手的虚拟对象的交互式操作。特别地，开发了使用户能够通过双手操纵虚拟对象的操纵系统。第二，力显示器h ...更多信息 具有很高的灵活性，可以直观地检查虚拟模型。第三，我们开发了在虚拟空间中模拟物理规律的仿真方法。通过研究虚拟物体在用户抓取和移动过程中发生碰撞时的行为，可以模拟虚拟物体的碰撞、滑动和旋转等行为。(3)利用各种数据资源生成虚拟世界：在这个子组中，研究了在没有3D几何模型的情况下生成虚拟世界的方法。在本研究中，我们使用真实的视讯影像建构高品质的虚拟世界。为了实现大规模的漫游系统，我们开发了由图像采集系统、图像管理系统和图像重建系统组成的图像合成系统。作为这种世界生成的理论基础，我们开发了图像重建方法，通过优化相机位置来获得3D空间信息。(4)使用高速图像网络生成基于网络的虚拟环境：这个小组正在研究“网络化”的虚拟世界。例如，我们开发了远程通信系统，为用户提供非常宽的视场图像，以支持远程协作。并利用该系统研究了周边视野在工作或交流任务中的作用。少

Contents development is one of the most important topics in the virtual reality research. The main purpose of group 3 is to develop software tools for generating various virtual worlds and to investigate potentials of the virtual worlds generated. Brief summary of our study is as follows ;(1) Development of virtual environment visualization workbench : We developed a multi-screen 3D display to provide researchers high-definition virtual world as a common work bench. In addition, we developed basic software libraries to integrate the experimental software developed by the group members with this display with various existing software tools.(2) Basic software to construct simulation world : In this sub group, basic softwares to perform simulation-based world generation are treated. First, we focused on interactive manipulation of virtual objects by hands. Especially, manipulation system that enables user to manipulate virtual objects by both hands are developed. Second, a force display h … More aving very high dexterity is developed to check virtual model intuitivety. Third, we developed simulation method to simulate physical law in virtual space. By investigating the behavior of virtual objects when objects collide in grasping and moving by the users, we could simulate behaviors of virtual objects such as collision, slip, and rotation.(3) Producing virtual world with various data resources : In this sub group, methods to generate virtual world without 3D geometric model are investigated. In this research, we constructed high quality virtual world using real video images. To implement large-scale walk through system, we developed image synthesis system consisting of image capture system, image management system and also image reconstruction system. (Prof. Hirose) As a theoretical base of this kind of world generation, we developed image reconstruction method to obtain 3D space information by optimizing camera position.(4) Generating network based virtual environment using high-speed image network : This sub group is working on "networked"-virtual world. For example, we developed Tele-communication system that provides users very-wide field of view images to support remote collaboration. And we investigated roles of the peripheral visual field in working or communication task using the system. Less