基于环境光场和漫反射光场的动态场景绘制
DOI: 10.11834/jig.1998010243
Keywords: 计算机图形学,图形生成,基于图象的绘制,光场,环境光场,漫反射光场
Abstract:
利用光强的可叠加性，本文提出了将光场分解为不随场景变化的子光场的思想，使得物体、光源、观察点都可自由变动的动态场景绘制也能利用基于图象的绘制技术之优势。依靠漫反射与观察方向的无关性，本文还提出了漫反射光场的四维表示法，并且利用物体对不同点光源的漫反射之间以及环境光与漫反射光之间的内在联系，只用一个单位强度的单色点光源为物体构造漫反射光场，从而节省了存储空间和预处理时间。利用其数据结构的一致性，环境光场、漫反射光场和深度场中对应点的数据被合并成５维矢量以便更有效地压缩。本文给出的绘制算法，能准确地计算出物体
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