期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2001
卷号：XXXIV-5/C7
出版社：Copernicus Publications
摘要：Just a few years ago, a video card with stereoscopic display capabilities was assumed as a state of the technology product and only professionals had the ability to have one. Rapid technology progress combined with competition among video cards producers, have eliminated this cost so that a typical PC user can afford it. In the near future these cards are expected to be standard output devices of a PC. So, maybe it is the right time to consider of a product that can use this technology: the 3D video. Additionally, if this video includes proper metadata can be a Geo-referenced 3D video. Architects community can use this added valued product for better presentation of their work. Archaeologists can show their sites and findings in a new visual way. And this product gives the ability to make some basic measurements on it. Typical products of a DPS are digital elevation models, orthophotos and/or video using fly-through techniques. With the help of these products, 3D video can be easily created. Once the rendered 3D model has been created, a virtual pair of cameras can capture images of the draped model from any place above or in front of it. Images taken from two different positions away of the object containing the epipolar geometry and can be considered stereo images. In an active polarization system using 3D glasses, these images can be interlaced producing a 3D scene. Additional 3D scenes can be produced from any other position across a virtual path that is drawn above or in front of the object's model. Finally all the scenes taken along the path defined by the user can be combined and a 3D video is generated. Additionally, the position and the rotation of each camera, for every frame, can be recorded into video file; every frame then equals to a pair of images with known interior & exterior orientation
关键词：Stereoscopic vision; Epipolar images; 3D video
