摘要
结合虚拟现实、GIS和跨媒体技术,提出一种具有高真实感、较强交互能力的情景式数字城市系统实现方法.该方法以GIS矢量数据为空间索引,全景交互式视频为表现内容,且加载文字、图像和音频等数据,并对这些海量信息进行跨媒体数据统一建模,以实现不同类型数据的组织和管理.与通过三维图形实现城市建模相比,采用文中方法实现的系统具有数据采集高效、表现手段真实感强、建模成本低和易于扩充等优势.
This paper presents a real scene based digital city system by the combination of virtual reality, GIS and cross media techniques. This system uses a multiple-camera panoramic imaging approach to provide a tour of a scene which is highly true and easily captured. GIS data is acquired in concert with the panoramic video, and used to describe the spatial location of the camera at any given moment. Other data such as text, image and audio are also used to model the scene at the same time. All types of those data are organized and managed through a cross-media model therefore the semantic relations among them are fully mined. Our system gives the user an interactively visual representation to the real world, yet is far more practical than a complete 3D rendering solution.
出处
《计算机辅助设计与图形学学报》
EI
CSCD
北大核心
2008年第11期1432-1439,共8页
Journal of Computer-Aided Design & Computer Graphics
基金
国家自然科学基金(60533090
60603096)
"十一五"国家高技术研究发展计划(863)重点项目课题(2006AA010107)
高等学校科技创新工程重大项目培育资金项目(706033)
长江学者和创新团队发展计划(IRT0652)
国家科技支撑计划项目(2007BAH11B01)
浙江省重大科技项目(2006C13097)
