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原文传递 A 3-D TERRAIN VISUALIZATION DATABASE FOR fflGHWAY INFORMATION MANAGEMENT

题名：	A 3-D TERRAIN VISUALIZATION DATABASE FOR fflGHWAY INFORMATION MANAGEMENT
作者：	Kelvin C J*. Wang and David Xy Li
关键词：	Terrain Visualization, Highway Management
摘要：	The full digital, computer based Multimedia based Highway Information System (MMHIS) uses technologies of video, multimedia data synchronization, three-dimensional visualization, high-speed networking, and video server. This paper presents the development for the three-dimensional (3-D) terrain visualization user-interface of MMHIS, based on the Application Programming Interface (API) of OpenGL. Digital Elevation Models (DEM) from the US Geological Survey (USGS) were used to construct the 3-D terrain surface of the entire state. A unique picking algorithm was devised to conduct visual queries on the terrain surface of the state. The 3-D user-interface allows the user to zoom, rotate, and pan around the statewide terrain surface for multimedia data query.
报告类型：	科技报告