The Smart Cities data and applications need to replicate, as faithfully as possible, the state of the city and to simulate possible alternative futures. In order to do this, the modelling of the city should cover all aspects of the city that are relevant to the problems that require smart solutions. In this context, 2D and 3D spatial data play a key role, in particular 3D city models. One of the methods for collecting data that can be used for developing such 3D city models is Light Detection and Ranging (LiDAR), a technology that has provided opportunities to generate large-scale 3D city models at relatively low cost. The collected data is further processed to obtain fully developed photorealistic virtual 3D city models. The goal of this research is to develop virtual 3D city model based on airborne LiDAR surveying and to analyze its applicability toward Smart Cities applications. It this paper, we present workflow that goes from data collection by LiDAR, through extract, transform, load (ETL) transformations and data processing to developing 3D virtual city model and finally discuss its future potential usage scenarios in various fields of application such as modern ICT-based urban planning and 3D cadaster. The results are presented on the case study of campus area of the University of Novi Sad.

中文翻译：

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建立智慧城市应用的虚拟3D城市模型：以诺维萨德大学校园区域为例

智能城市的数据和应用程序需要尽可能忠实地复制城市状况，并模拟可能的替代未来。为此，城市建模应涵盖与需要智能解决方案的问题相关的城市的所有方面。在这种情况下，2D和3D空间数据起着关键作用，尤其是3D城市模型。可以用于开发此类3D城市模型的数据收集方法之一是光检测和测距（LiDAR），该技术为以相对较低的成本生成大型3D城市模型提供了机会。对收集到的数据进行进一步处理，以获得完全开发的逼真的虚拟3D城市模型。这项研究的目的是基于机载LiDAR测量开发虚拟3D城市模型，并分析其在智慧城市应用中的适用性。在本文中，我们介绍了从LiDAR收集数据到提取，转换，加载（ETL）转换和数据处理再到开发3D虚拟城市模型的工作流程，并最终讨论了其在现代应用等各个领域的潜在使用场景。基于ICT的城市规划和3D地籍。结果以诺维萨德大学校园区域为例进行了介绍。加载（ETL）转换和数据处理以开发3D虚拟城市模型，并最终讨论其在各种应用领域中的未来潜在使用场景，例如基于ICT的现代城市规划和3D地籍。结果以诺维萨德大学校园区域为例进行了介绍。加载（ETL）转换和数据处理以开发3D虚拟城市模型，并最终讨论其在各种应用领域中的未来潜在使用场景，例如基于ICT的现代城市规划和3D地籍。结果以诺维萨德大学校园区域为例进行了介绍。