基于3DGIS的木构建筑群三维重建与可视化

3DGIS-Based Reconstruction and Visualization of Timber-Frame Building Cluster

迄今为止中国木构建筑及其建筑艺术与工艺的文献均已非常罕见,利用计算机技术保护和研究古建筑已经成为关键问题。介绍了一个基于三维地理信息系统木构古建筑群的动态可视化系统以及该系统的框架与工作流程,详细阐述了多细节层次技术(LOD)与CAD数据相结合进行精确建模的方法。为了达到逼真效果的实时浏览,提出了一个新的数据库管理引擎,并介绍了遮挡剔除和可编程实时渲染等加速技术。最后,实验分析表明基于3DGIS的动态交互式可视化系统是文化遗产研究与保护的有效工具。

There are only a few timber-frame buildings of China and also a few literatures that record the arts and crafts about them. It becomes a critical task to research and protect ancient architecture by computer and information technology. A dynamic visualization system based on 3D GIS for timber-frame buildings, its framework, and workflow were proposed particularly. The combination of the levels of detail （LOD） strategy and CAD data was discussed in detail. For the purpose of real-time photorealistic visualization, a new Database Management Engine was put forward. Moreover, occlusion culling and programmable realtime rendering were applied to data preprocess for enhancing rendering frequency. Finally, a practical application shows that a 3DGIS-based interactive dynamic visualization system is an efficient tool for the protection and research of the ancient architecture.