Virtual City Project
  • General
    • Project description
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  • Research topics
    • Versioning of city models
    • Measuring the city
    • Enhancing 3D city models
    • Documents and 3D city models
    • nD visualization of digital twins
  • News
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  • Developed tools
  • Partnership projects
  • Demos

    VCity's online demos

    Our research is very often carried out with a multidisciplinary approach which has often led us to beautiful collaborations (Astrophysicists, Paleoanthropologists, Historians, Urban Planners, Geographers, etc.). The Vcity project focuses on modes of representation and the dynamics of the city. This project, anchored between geometric modeling and data science, leads to propose new data processing algorithms, in order to allow a better understanding of the territory, but also of its possible evolutions. The data is geometric (generally 3D) and has a related semantics and topology. It often refers to the time and space in which it will evolve (rapidly with sensor data, but also over long periods of time with the evolution of infrastructures in the city for example). The processes that we propose takes into account these spatio-temporal but also thematic dimensions and should allow the exchange of data in an interoperable way by relying on new standards (ISO TC 211, OGC) but also by allowing the creation of new standards. In this page we list some demonstrations resulting from research programs funded since 2013.

    • UD-Viz client side : this demo illustrates the end-user’s features and extensions
    • Versioning the city : three timestamps at city level (3DTiles based)
    • Third person campus wandering : virtually wander (with a third person view at human scale) within a 3D model of the Portes des Alpes de Bron university campus (compare with a VR-photography based campus visit )
    • Flying campus : a game taking place in a campus flying over a city.
    • UI data driven : upload data through UI and obtain computed results
    • Attaching multimedia documents to city scenes
    • UD-SV MultiNavigation  : A UD-SV based demonstration of multidimensional urban data visualization and navigation presented at the GeoDataDays 2022 Geodata Challenges . This demo relies on a Strabon RDF Triple Store accessible here .

    3DTiles related demos

    • 3DTiles zoo created with py3dTilers (water, terrain, buildings, bridges, roads)
    • Displaying point clouds : the PC dataset is 3.9Gb
    • 3dTiles tilesets with LODS : interactive usage of Level Of Details (LOD)
    • City wide 3dTiles tileset visualization : roughly 800k cityObject instances (mostly buildings)
    • 3DTiles with IFC and CityGML : multi-visualization of the campus of La Doua