<p>Large point clouds from radars and these-dimensional scanners are commonly used in Archaeology. However, in most cases these models cannot be properly integrated and used in software such as heritage management due to its large size. Therefore, some tools to make this management easier and optimize the processing are needed. In this work, we propone the integration between OpenVDB and GRASS in a C++ module to combine the widen functionality of GRASS GIS with the 3D models management efficiency of OpenVDB. Specifically, this application is used to combine the topographic information of a city with the 3D models of the most significant buildings. This application can be useful for both current cities as well as for virtual reconstruction of existing villages in the olden days and currently disappeared. </p>

Urban planning has become a relevant issue to achieve the sustainable development of the modern cities. It requires ubiquitous systems including 3D GIS capabilities and high performance without many hardware requirements. This paper deals with the development of a web application to visualize, interact and explore, through 3D perspective, the underground infrastructures of our college campus. Its 3D reconstruction raises many challenges which remains to be surmounted. The main aim of this research is the 3D modeling of underground infrastructure in order to real-time analytics of its current features. In addition, this system supports virtual reality technology to interact with the GIS data into a collaborative environment available to be performed with mobile platforms.

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