测绘学报

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论地球空间信息的三维可视化:基于图形还是基于影像?

李德仁   

  1. 武汉大学测绘遥感信息工程学院
  • 收稿日期:2009-06-11 修回日期:2009-12-01 出版日期:2010-04-22 发布日期:2010-04-22
  • 通讯作者: 李德仁

On Three-dimensional Visualization of Geospatial Information: Graphics based or Imagery based?

  • Received:2009-06-11 Revised:2009-12-01 Online:2010-04-22 Published:2010-04-22

摘要: 地球空间信息三维可视化已经和大众化、开放性、可量测、可挖掘一并成为信息化服务的基本要求。当前,基于图形信息的三维可视化和基于影像信息的三维可视化是实现地球空间信息三维可视化的两种主要技术途径。本文结合典型应用实例,对这两类方法的基本原理、技术内涵及表现形式进行了详细阐述,比较了它们各自的优缺点和适用范围,指出将两者有机结合是未来地球空间信息三维可视化发展的趋势,并给出了一种基于图形和影像相结合的三维可视化方案。通过这样一种有机结合模式,能够实现地球空间信息三维可视化既经济又高效的目标,从而更好地满足用户需求。

Abstract: 3D visualization of geospatial information has constituted one of the basic requirements of geo-information service nowadays, along with popularity, openness and capabilities of target-measuring and knowledge-mining. Currently, there are two major technical routines for 3D visualization of geospatial information, that is, the graphics based and the imagery based approaches. This paper elaborates the basic principles, technical connotation and manifestations of these two types of approaches, with some typical application instances illustrated correspondingly; by comparing the two kinds of visualization methods in terms of their advantages and disadvantages as well as the application scopes, it is concluded that there is a developing tendency to combine the graphics based and imagery based techniques together in the future, and an optimized 3D visualization strategy is finally given out. Based on such strategy, the 3D visualization of geospatial information can be accomplished economically and efficiently, thus will meet the requirements of users better.