DIGITAL INVESTIGATIONS OF AN ARCHAEOLOGICAL SMART POINT CLOUD: A REAL TIME WEB-BASED PLATFORM TO MANAGE THE VISUALISATION OF SEMANTICAL QUERIES
- 1ULG, Department of Geography, Geomatics Unit, University of Liège, 4000 Liège, Belgium
- 2ULG, Architecture Faculty, Study and Representation of Space and Form, University of Liège, 4000 Liège, Belgium
- 3ULG, Institut of civilisations, arts and letters, University of Louvain, 1348 Louvain-la-Neuve, Belgium
- 4ULG, European Archaeometry Centre (CEA), University of Liège, 4000 Liège, Belgium
- †These authors contributed equally to this work.
Keywords: 3D Viewpoint management, Point Cloud, Semantic, WebGL, Segmentation, Classification, Feature extraction, Cultural Heritage, Conservation
Abstract. While virtual copies of the real world tend to be created faster than ever through point clouds and derivatives, their working proficiency by all professionals’ demands adapted tools to facilitate knowledge dissemination. Digital investigations are changing the way cultural heritage researchers, archaeologists, and curators work and collaborate to progressively aggregate expertise through one common platform. In this paper, we present a web application in a WebGL framework accessible on any HTML5-compatible browser. It allows real time point cloud exploration of the mosaics in the Oratory of Germigny-des-Prés, and emphasises the ease of use as well as performances. Our reasoning engine is constructed over a semantically rich point cloud data structure, where metadata has been injected a priori. We developed a tool that directly allows semantic extraction and visualisation of pertinent information for the end users. It leads to efficient communication between actors by proposing optimal 3D viewpoints as a basis on which interactions can grow.