虚拟城市建设中纹理库建立的研究

Study on the Texture and Model Library Build in the Construction Process of Virtual City

虚拟城市是对城市的三维逼真表达,它不仅具有多种细节层次的几何表达,还提供具有相片质感的表面描述。在虚拟城市建设中,纹理数据对于虚拟城市建设速度、运行效率、逼真性、沉浸感都有着至关重要的作用。文章从系统和科学的角度出发,探讨了虚拟城市模型建设过程中纹理库的建设,解决了传统纹理数据的无序、低效利用问题。实践表明,纹理库对于逼真虚拟城市模型的快速高效构建发挥着至为重要的作用。

Virtual city is the realistic expression of three-dimensional city model, it not only have the geometry expression of different levels of detail, but also provides surface description with photo-realistic sense. In the construction process of virtual city, texture data have great importance to the build speed, run efficiency, reality and immersion of virtual city. Based on the angle of systematical and scientific intention, this article discussed the building of texture library in the construction process of visual city model and it solved the problems of out-of-order and inefficient use of traditional texture data. And the finally practice showed that texture library played a significant role in rapid and efficient modeling for realistic virtual city.