一种改进的基于几何和纹理混合简化的快速绘制算法

摘要

文中对离视点较近的物体采用几何简化技术，对于距离较远的物体用纹理表示方法，在视点发生变化时，能进行几何-纹理相互转换.转换时，通过对纹理投影面后的几何插值，生成退化几何，实现几何-纹理间的光滑过渡.该算法的一个特点是结合了几何和纹理细节层次的思想.最后通过图例说明了所提出方法的有效性.%Objects nearby viewpoint undergo geometric simplification, whilefaraway objects are rendered by texture mapping. Through the geometric interpolation behind the texture plane, degenerated geometry is produced, thus realizing smooth transition from geometric representation to texture mapping. Concepts of level-of-details are applied to geometry and texture jointly. Examples illustrate the high efficiency of the hybrid approach.