基于分形理论的三维地形场景的真实感绘制  

Realistic Rendering of 3D Terrain Scenes Based on Fractal Theory

作　　者：英振华[1] 石锐[1] 胡捷[1] 

机构地区：[1]重庆大学计算机学院,重庆400044

出　　处：《计算机仿真》2006年第5期160-162,共3页Computer Simulation

摘　　要：如何在PC机上进行三维地形场景的真实感绘制一直是一个挑战性课题。三维地形场景的真实感绘制追求的两个目标是绘制的逼真度和绘制的实时性,需要在不明显降低图像质量的条件下保持较高的交互帧速率。该文运用分形理论生成三维地形场景,为了满足实时性的要求,采用连续LOD算法和其它技术来加速地形绘制;为了满足逼真度的需求,采用纹理映射和光照映射。这种方法可以在普通微机上基于分形理论实现三维场景的真实感绘制,达到实时性和逼真度的要求。Realistic rendering of 3 D terrain scenes is always a challenging subject. It has two aims, which are reality of rendering and real - time of rendering. It should maintain higher interactive frame rates without noticeably degraded image quality. Fractal theory was used to generate 3D terrain scenes in this paper. For the purpose of real - time, continuous LOD algorithms and other techniques were used to accelerate terrain rendering. For the purpose of reality, texturemapping and lightmapping were used. Realistic rendering of 3D terrain scenes based on fractal theory was generated in normal PC. The fidelity and real -time were enough.

关 键 词：层次细节 分形理论 真实感绘制 三维地形场景 纹理映射 光照映射 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]