立体影视与地景仿真

在进行“虚拟现实”、ＧＩＳ等各项研究中，立体观察当是最关键的技术之一。人为什么能看出立体？如何产生人工立体视觉？怎样在ＣＲＴ视屏上显示一个立体的图像？显然是大家十分关心的问题。本文包括如下两方面的内容：１）双眼自然立体视觉的生理基础。彩色立体电视与ＣＲＴ视屏立体观察的原理。重点介绍目前已广为采用的时分制视屏立体观察的原理。２）视屏立体观察用于地景仿真的初步实践。介绍如何以数字地面模型（ＤＴＭ）数据为原始资料，用３ＤＳ生成某一地区动态地面立体透视图，实现所谓视景地形仿真。

Stereo-view on the CRT Screen and Terrain Visual Simulation

Of the various kinds of reserch on the Virtual Reality, stereo-view is one of the most key technologies.Why can people recognize a stereo object? How to realize artificial stereoscopic vision and how to display a stereo-image on CRT screen? Obviously it is a problem of interest to everyone.The following two aspects are covered in the article.1) Physiological fundamental of the natural binocular stereo-vision: theory of 3D color TV and the stereo-view on the CRT screen. especially introduces the theory of widely adopted Time-Division System.2) The preliminary practice for using the stereo-view technology on the screen to the Virtual Reality and GIS, introducing how to use 3DS to construct a movable real stereo terrain perspective by taking DTM data as the firsthand information for the purpose of terrain visual simulation.