3-D Server for Internet Access to Complex Geometric Databases

通过互联网访问支持制造业、科学、商业和娱乐领域交互式图形应用的3D模型所需的带宽超过了当前个人电脑和电话连接的几个数量级。对海洋、城市、工厂、飞机、虚拟商场、电器、分子或原子反应的更详细模型的需求日益增长，抵消了预期的技术进步。该项目将研究3D几何服务器的新理论、架构、数据结构和算法，这将大大减少互联网客户端用户在首次访问复杂的3D数据库、在模型中交互式导航以及检查特定细节时所经历的延迟。该项目将探索常见应用中可接受的视觉误差限制，并将利用这些公差显著改进现有的3D简化、几何压缩和3D模型渐进传输技术。该项目将开发新的紧凑的多分辨率数据结构和结合3D简化和压缩的新算法。预期的结果可能会影响广泛可用的交互式3D图形技术的互联网开发的软件产品和标准。

The bandwidth required for accessing over the internet 3D models that support interactive graphic applications in manufacturing, scientific, commercial, and entertainment areas exceeds the capabilities of current personal computers and phone connections by several orders of magnitude. Anticipated technology improvements are offset by the growing need for more detailed models of oceans, cities, factories, aircrafts, virtual malls, appliances, molecules, or atomic reactions. This project will investigate new theories, architectures, datastructures, and algorithms for a 3D geometry server that will significantly reduce the delays experienced by internet client-users when first accessing complex 3D databases, when interactively navigating through the model, and when inspecting specific details. The project will explore the acceptable visual error limits in common applications and will exploit these tolerances to significantly improve on existing techniques for 3D simplification, geometric compression, and progressive transmission of 3D models. The project will develop new compact multi-resolution datastructures and new algorithms that combine 3D simplification and compression. Anticipated results may impact software products and standards for the internet exploitation of the broadly available interactive 3D graphics technology.