公路隧道视景仿真建模技术

对目前常用建模技术进行比较，提出了以多边形建模方法进行视景仿真建模的思路。结合公路隧道，对模型的数据组织结构进行剖析，对建模的实例、细节层次（LOD）、自由度（DOF）等关键技术进行了应用研究，探讨了这些技术的理论和具体实现方法。仿真结果表明，这些技术对公路隧道实时场景的生成具有重要的作用，能有效地提高三维视觉的真实感受和虚拟系统场景的细节表达能力，使整个视景仿真画面更加生动逼真。

Modeling of Highway Tunnel Scene Simulation

The current modeling technologies are analyzed, and a new modeling thought is put for ward. Combined with highway tunnel scene simulation, the data organizing structure of the rood el is studied. The technologies that are adopted during creating the model, such as texture map ping, LOD and DOF, are researched, their theories and realizing methods are discussed. The simulation results showed that these technologies are keys of real-time generation of highway tun nel, which can increase the felling of 3 D vision system, express the ability of virtual system, and enhance the authenticity of highway tunnel scene simulation. 5 figs, 8 refs.