虚拟环境中的几个图象处理方法

摘要：目前，虚拟环境中的图象处理技术是计算机图形学研究领域的一大热点。虚拟现实技术将计算机采集到的各类信息以全新的方式组织起来，提供给拥护一个趋于人性话的虚拟信息空间。本文就是在这个大环境下，对几个虚拟环境中的十分有用的图象处理方法如对于自由虚拟实景空间的构造、虚拟场景中半动
态对象的层次运动模型、虚拟场景三维自然景观的分形模拟(随机三叉树、Diamong-Square算法、三维分形地形的实现)、虚拟环境中的行为模型等方面加以汇总和整理，从而能够建立虚拟环境中图象处理的整体概念。并能够通过对于算法的熟悉和掌握来便于对与虚拟环境中图像进行处理。
关键词：计算机图形学 图象处理 虚拟现实 三维自然景观 三维分形地形

Abstract: Virtual reality technique organize all kinds of information with a new mode in computer, and give a virtual information space of human nature. By the way, technology of graphics-based to produce 3D nature landscape is popular in constructing virtual scene. The random three-branch-tree and 3D fractal terrain were made with fractal geometry, and were rendered with computer graphics. Of course, how to enlarge the extent of freedom is one of the key issues in the field of virtual reality. A method called conspherical mosaics to construct FIBVS was presented, and users’ coule look down and look up freely when they walk in it.
Key words: computer graphics；image processing；virtual reality；nature landscape；fractal geometry