中文摘要：

城市三维信息服务平台建设是数字城市建设的关键与核心，本文着重研究采用开源的三维图形引擎（ OSG）、开源GIS 服务器、开源数据库、开源Web 服务器等设计一套全开源的城市三维信息服务平台，并重点介绍系统核心功能的实现，以期能为城市三维信息服务平台的建设提供一种可行的开源解决方案。

英文摘要：

The construction of urban three -dimensional information service platform is critical for the digital city .In this paper , the open-source three dimensional graphics engine , open-source GIS server , open-source database system , and open -source web server are adopted to provide an open -source solution of urban three -dimensional information service platform and the realization of the system key function are mainly introduced .