Application of viewpoint-dependent lod in virtual simulation for expressway

作者：Yuan Wangfang; Wei Lang^*; Chen Tao

来源：ICIC Express Letters, Part B: Applications , 2011, 2(3): 687-692.

• Frame rate
• Level of detail
• LOD
• LOD techniques
• Terrain model
• Testing technique
• Virtual reality simulations
• Virtual simulations
• Virtual tests
• Visual qualities

LOD (Level of Detail) is a group of model that represents the same object with different detail degree in the model database. The present paper focuses on the optimization of the virtual reality simulation of expressway. Based on the modeling and testing technique of Xi';an-Hanzhong expressway, the road and terrain models of expressway were optimized using viewpoint-dependent LOD technique. The rendering frames rates of the expressway model technique have been recorded and compared through virtual tests before and after using LOD technique. The results indicate that LOD technique could greatly improve the rendering efficiency and frame rate without reducing the visual quality.

• 出版日期2011