最后，关于第三种虚拟漫游技术，本文简单讨论了基于图像的虚拟场景漫游这一崭新的技术。

At last, we discuss simply the new technique of walkthrough in Image Based Virtual Architecture environment.

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摘要：碰撞检测是虚拟现实系统的一个重要组成部分，它对虚拟场景漫游及动态元素表达的真实性起着至关重要的作用。

Absrtact: Collision detection is an important component of virtual reality system. It plays a vital role in the reality of the virtual navigation and expression of dynamic elements.

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在虚拟校园系统漫游过程中，虚拟场景漫游的动态物体与静态物体之间或者动态物体与动态物体之间的交互基础就是碰撞检测。

During the process of virtual campus walkthrough, collision detection is the vital interaction base between dynamic object and static object or among the dynamic objects.

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