Research on Information Retrieval by Human Motion and Man-Machine Interaction in Virtual Reality Space

随着计算机图形学和虚拟现实技术的发展，我们一直在研究和开发与虚拟现实相关的新的信息检索和数据库技术。空间数据库与可视化数据库2.虚拟现实信息空间3.信息空间中的用户代理多媒体数据库研究了关系数据到信息空间的映射技术，提出了一种表示信息空间元组的空间OLAP模型。我们还提出了对象数据库的半自动数据库可视化技术。我们还制作了一个原型系统，它有一个虚拟现实界面，使用头戴式耳机和数据探针，和虚拟用户代理在信息空间的信息检索。虚拟用户代理的一个重要问题是人体动画。我们研究了运动控制技术和真实感人体动画。研究了图像数据库模型和视频数据库模型。

As the progress of computer graphics and virtual reality technologies, we have been researching and developing new information retrieval and database technologies realated to virtual reality as follows :1. Spatial Database and Visual Database2. Virtual Reality Information Space3. User Agent in Information Space4. Multimedia DatabaseWe studied a mapping technology from relational data to information space, and proposed spatial OLAP model to represent tuples in information space. We also proposed semi-automatic database visualization techniques for object databases. We also made a prototype system which has a virtual reality interface using head-mounted displaies and data grobes, and virtual user agent in information space for information retrieval. One of the important issue of virtual user agent is human animation. We studied motion control techniques and realistic human animation. We also studied image database models and video database models.