Abstract
Abstract. This paper presents an online application called 3D integrator enabling visual cross-examinations of architectural and acoustic data on web browsers, and explains the rationale behind its development. The tool consists of a series of overlays developed over the Potree 3D point cloud renderer. The 3D integrator is used to display visually, in an interactive environment, the 3D point clouds resulting from a survey protocol tailored to the specific needs of the corpus under scrutiny – fifteen small scale edifices often referred to as “minor heritage assets - and to the research’s overall ambition, co-reasoning on architectural and acoustic features at an interdisciplinary level. One of the tool’s distinctive features is to project abstract information (acoustic indicators) in a “close to real” 3D space (point clouds), hence merging scientific visualisation and information visualisation practices. The paper shortly sums up the particularities of the survey protocol, and discusses in detail the implementation of the analytical add-ons that have been introduced (visual trace of the survey protocol itself, exploitation of panoramas, volume calculation, and exploratory 3D representation of acoustic indicators). Finally, early uses of the tool are summarised and the services it actually offers at this stage are commented.
Highlights
This contribution reports on the development of a web-based 3D data visualisation tool, based on the Potree library, and aimed at helping actors to co-examine the architectural and acoustic features of small-scale architectural heritage assets
Its distinguishing trait is to represent in the 3D space a set of acoustic indicators
The data resulting from the survey protocol includes the panoramas extracted from the 360 camera, which are materialised in the 3D integrator by spheres (XYZ positions extracted during the photogrammetric processing)
Summary
This contribution reports on the development of a web-based 3D data visualisation tool, based on the Potree library, and aimed at helping actors to co-examine the architectural and acoustic features of small-scale architectural heritage assets. The tool, named 3D integrator, exploits the results of a specific data acquisition protocol through which metric, visual and acoustic data are co-extracted. Its distinguishing trait is to represent in the 3D space a set of acoustic indicators (quantitative data resulting from Room Impulse Responses analyses). A 3D point cloud (resulting from a photogrammetric process) acts as a sort of spatial background for various analytical overlays. In that sense it somehow plays the same role as cartographic layers in leaflet-powered web-based cartographic interfaces. Overlays are added that use the spatial background to position and correlate data: metric, visual, acoustic data are “projected” inside that spatial background. The paper’s main focus is put on the development of the prototype itself, and on the services expected
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