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：2008
卷号：XXXVII Part B4
页码：809-814
出版社：Copernicus Publications
摘要：As a non-profit, international, voluntary consensus standards organization, OGC and ISO/TC211 have been dedicating to develop standards for geospatial and location based services. WMS and WCS are two typical geospatial standards of OGC proposed geospatial standard family. A lot of servers have been setup to provide WMS and WCS for sharing and interoperating geospatial information. However, there are still many issues in quality of geospatial information service (QoGIS) for deploying and maintaining a real-time and non-interruptedly running system of sharing geospatial information. This paper proposes a method of WCS client based on pyramid model. On the client side, spatial images are stored in local cache in the structure of pyramid model. The experiment shows that this method brings out the effect of multi-resolution spatial images displayed dynamically and rapidly in 3D environment. And in addition, thematic layers from WMS are overlapped on WCS, which gives out more potential information. Because only client side is involved in this method and requires nothing for WCS server except the OGC standard specified, it is well worth applying to application
关键词：WCS; Pyramid Model; Client; Spatial Image; Local Cache
