虚拟世界的建造过程中，获取不规则物体的纹理非常重要。针对数字文物保存与展示的要求，提出了一种基于物体单色几何模型及在其周围环绕拍摄的照片序列来获取不规则物体圆柱纹理的算法。该算法分为投影变换、变形和拼接等步骤，通过将物体照片序列上的色彩映射到圆柱贴图面上来获得该物体的纹理。该算法具有对原始照片质量要求低和允许运行时进行编辑等优点。

With the availability of broadband Internet Access, Networked Virtual Environment (NVE) is ready for deployment over the Internet. Of existing NVE communication architectures, the most suitable one for Inter-networked VE is clientlserver architecture with multi-server. However under this architecture each client connects with only one server: so when a client migrates from one server to another, it should disconnect with the previous server and make connection to another server. Because of the Internet' s inherent latency problem, there will be an abrupt appearance in other clients' view due to it. To avoid this abrupt appearance, the paper bright out a new NVE's communication architecture in which each client connects with other server (s) in advance according to prediction. The new architecture was adopted by Tourism Expo' 2003 of Zhejiang Province, and achieved a great success.

敦煌石窟是我国乃至世界佛教艺术的瑰宝，建于西魏的285窟以壁画保存完整，内容丰富而成为敦煌石窟的精品之一。使用虚拟展示技术可以极大地方便人们对敦煌壁画艺术的欣赏，但是对于285窟壁画上丰富的佛教故事无法充分的表达。提出了285窟多媒体集成虚拟展示，对285窟的三维模型进行多媒体嵌入支持扩展，通过在3DS文件中增加多媒体信息结点，将三维模型与多媒体数据库进行有机整合；对热点区域建立基于对象而非基于面片的热点定义，有效地避免了在使用LOD方法中热点随面片简缩而消失的问题；在实时交互中将多媒体播放嵌入到虚拟场景中，增强了多媒体和虚拟环境的融合程度。通过多媒体集成虚拟展示，丰富了285窟的表现形式，展现能力得到了增强，取得了较好的效果。文中对285窟的建模技术以及系统中采用的实时绘制技术和真实感绘制技术做了介绍。

Chinese civilization has accumulated many heritage sites over thousands of years. Dunhuang Mogao Cave, located in Gansu province, is typical. Well preserved to date, the caves contain more than 555 grottoes, 2, 000 painted statues, and 5, 000 square meters of wall paintings. However, they face serious damage from many different factors. Scientists and artists have worked for a long time on how to preserve and restore the murals' colors, but still have not found satisfactory methods. Discovering how to use advanced computer techniques to preserve, restore, and reuse Dunhuang fresco art information is a very interesting and complex task. In our project, we integrate many techniques, such as image processing, informaton retrieval, knowledge representation, and intelligence reasoning, to deal with these problems.

Internet技术带来了网络协同合作。采用知识碰撞模型的信息交流和知识共享技术，为不同地域、不同领域的人员相互合作、自主交流提供良好的辅助工具。就知识碰撞的概念、结构、方法进行了分析。并综合知识管理概念和综合集成法，提出了一个基于知识碰撞的虚拟研讨厅模型（KVBCWS）。随后对KVBCWS的基本组成部分、体系结构、功能特点做了解释。最后，就KVBCWS系统的具体应用和发展前景做了论述。