HVS：一种基于实景图象的虚拟现实系统

大多数的虚拟现实比试在于计算机图形技术，先由多边形构造虚拟场景的三维几何模型，再由计算机根据用户的观察点和观察方向实时绘制出用户所看到的虚拟场景，ＨＶＳ 另一种思路，由计算机自动拉接、变形与组织许多幅度散的实景图象或连续视频，生成虚拟场景，这种虚拟场人有照片质量的视觉效果，被我们称为虚拟实景空间，虚拟实时空间能为用户提供、后退、仰视、俯视、３６０度环境、近看、远看等漫游能力，运行它不需要高性能的图

HVS:A VIRTUAL REALITY SYSTEM BASED ON THE REAL_WORLD IMAGE

Traditionally, the virtual reality systems use 3D computer graphics to model and render a virtual environment in real time. This approach usually requires laborious modeling and expensive rendering hardware. For this reason, HVS use panoramic video and multivision technology to construct a photoquality virtual reality system. Panoramic video is based on 360 degree panorama of real world scene, captured by the normal camera. Multivision provides an approach of information organization. It makes use of many panoramic videos to build a navigable virtual information space. Users can browse and immerse in this virtual information space. HVS was developed on personal computers. This paper summarizes the spatial model and implementation of HVS.