建筑造型及其环境图象的渲染技术

本文提出一个用于建筑物及其周围场景真实感图形生成的图形图象综合光线跟踪算法采用综合处理图形和图象的光线跟踪技术，对建筑物及其场景中插人的景物图象（如树木、人物等）可以根据光源、视点的位置，生成合理的阴影和倒影。由于引入了虎视点及位置纹理映射的方法，景物图象在造型表面上的倒影及景物图象上被其它物体遮挡的阴影效果更加逼真。提出的天空背景的处理方法，使得背景可以反射、透射到建筑物表面上，并在视点变化时天空背景可以正确地移人或移出视野。此外本文还在表现建筑物表面材料的连续纹理映射、模拟地面积水的局部反射效果等问题上给出了解决方法。

Ray Tracing Techniques for Architectural Modeling and Environmental Images

new method for ray tracing buildings and environment images has been proposed,which can be used to generate realisic image including reflections and shadows of both buildings and environmental objects(tree,person,etc.).The reflections of environmental images and the shadows of other objects on the images can be achieved much realistically by into dueing virtral view point The new method can guarantee that the background can be reflected or transmitted on to building to surfaces,and moved in or out of the field of vision with the position change of viewpoint The new method can also realize continuous texture mapping for architectural materials,and simulate the reflections of buildings in puddles.