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Multisensor fusion for volumetric reconstruction of large outdoor areas

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4 Author(s)
Fiocco, M. ; Eur. Comm., Joint Res. Centre, Ispra, Italy ; Bostrom, G. ; Goncalves, J.G.M. ; Sequeira, V.

This paper presents techniques for the merging of 3D data coming from different sensors, such as ground and aerial laser range scans. The 3D models created are reconstructed to give a photo-realistic scene enabling interactive virtual walkthroughs, measurements and scene change analysis. The reconstructed model is based on a weighted integration of all available data based on sensor-specific parameters such as noise level, accuracy, inclination and reflectivity of the target, spatial distribution of points. The geometry is robustly reconstructed with a volumetric approach. Once registered and weighed, all data is re-sampled in a multi-resolution distance field using out-of-core techniques. The final mesh is extracted by contouring the iso-surface with a feature preserving dual contouring algorithm. The paper shows results of the above technique applied to Verona (Italy) city centre.

Published in:

3-D Digital Imaging and Modeling, 2005. 3DIM 2005. Fifth International Conference on

Date of Conference:

13-16 June 2005