Prior to an excavation for a construction project, fieldwork is necessary to identify the location of all underground utilities. There is a demand for identifying the accurate positioning of the underground utilities, in order to support the contractors in avoiding damages to existing underground infrastructures. Such damages could cost thousands of euros, needless to underline the danger in human lives, in the presence of gas and electricity. There is a concrete market request for solutions that are able to effectively handle underground utilities’ data and function in support to the fieldwork. The fusion of technologies such as global navigation satellite systems (GNSS), sensors, geographic information systems (GIS) and geodatabases, augmented and virtual reality (AR/VR) can lead to products and services for monitoring, documenting and managing the utility-based geospatial data. The LARA project, a H2020 co-funded project by the European Commission (EC), embraced these needs and developed a software and hardware (S/H) system. The LARA hand-held and mobile device involves state-of-the-art technologies in the domain of positioning and sensors, AR and 3D GIS geodatabases and aids the users in “seeing” beneath the ground by rendering the complexity of the 3D utilities’ models. The visualization of underground utilities is made using a mixed reality paradigm, where the user can see at the same time the surroundings and the utilities rendered at their exact location in 3D. In order to cope with the end-users expectations, two types of visualizations have been implemented and tested. LARA system tested in two case studies during the project lifetime and the results are promising.

在为建设项目进行挖掘之前，必须进行实地调查以确定所有地下公用设施的位置。需要确定地下公用设施的准确位置，以支持承包商避免损坏现有的地下基础设施。这样的损害可能要花费数千欧元，而在天然气和电力存在的情况下，不必要地强调对人类生命的危害。市场对解决方案的实际需求是，这些解决方案能够有效处理地下公用事业的数据和功能，以支持现场工作。全球导航卫星系统（GNSS），传感器，地理信息系统（GIS）和地理数据库，增强和虚拟现实（AR / VR）等技术的融合可以产生用于监控，记录和管理基于实用程序的地理空间数据。LARA项目是由欧盟委员会（EC）共同资助的H2020项目，它满足了这些需求并开发了软件和硬件（S / H）系统。LARA手持式和移动设备涉及定位和传感器，AR和3D GIS地理数据库领域的最新技术，并通过渲染3D实用程序的复杂性来帮助用户“看到”地下楷模。地下公用事业的可视化是使用混合现实范式进行的，用户可以同时查看周围环境和在3D中其确切位置渲染的公用事业。为了满足最终用户的期望，已经实施和测试了两种类型的可视化。