一种基于特征的实时LOD模型生成算法

Real-Time Algorithm for Feature-based LOD Models Generation

在虚拟现实系统的复杂场景中为了加速复杂场景绘制,一般采用层次细节(Level of Detail)模型的方法。一般的 LOD 方法主要基于几何外观决定形体被简化的部分和简化程度。针对某些特定应用,提出了一种基于特征的 LOD 模型生成算法,以对某种特征的度量值为权重对几何特征进行调制,在简化后的模型中充分保留了该特征。算法简单直观,所生成的 LOD 模型能连续平滑过渡,并且满足实时显示的要求。实验结果表明了算法的有效性。

In VR system, LOD models are used to accelerate the rendering of complex scene graph. Normal LOD algorithms are based on geometry properties. A new algorithm of LOD models automatic generation is proposed concerning artificial features of the models. This algorithm can generate LOD models according to not only geometry properties but also additional features. It is easy to be implemented and the LOD models it generates are progressive meshes that can be rendered in real-time. The algorithm has been tested in some applications.