Based on the instruction of the concept of digital city, the writer expounds the structure of digital city, which "digital Harbin" is taken as background, the key techniques and standard.
在引出数字城市概念基础上，以“数字哈尔滨”为背景，论述了数字城市的体系结构、关键技术和标准化。
Thus, the paper gives the the concept of corresponding digital orthophoto map applying to stereo scene, and discusses the theory, characteristic, production and application in city management.
为此，作者提出了能够进行立体观察的同名数字正射影像图的概念，并详细阐述了这一产品的实现原理、技术特色、生产方法和在城市管理中的应用。
The expatiation is shown in the paper firstly about the concept and framework of Digital city and comparative study of development of Digital city at home and abroad.
本文首先阐述了数字城市概念和框架，并对国内外数字城市建设进行对比分析。
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