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Proceedings Paper

High-resolution texturing of building facades with thermal images
Author(s): Marco Scaioni; Elisabetta Rosina; Luigi Barazzetti; Mattia Previtali; Veronica Redaelli
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Paper Abstract

This paper presents two methodologies able to map a block of IR thermal and RGB images on 3D models derived from terrestrial laser scanning surveying. Proposed methods stand out from other traditional approaches that are mainly based on the projection of single images through approximate models. The first method is a rigorous photogrammetric orientation through a bundle adjustment integrating both RGB and thermal data. Then, another complementary solution based on the use of a calibrated 'bi-camera' system is illustrated. Both methods allows one to texture building facades (reconstructed with 3D models) with their temperature values. Finally, several products can be extracted and managed in different data processing environments: triangulated models to visualize 3D spatial information and to analyze 3D heating diffusion on the surface; raster datasets (e.g. orthophotos or rectified images) with temperature as radiometric value. Both approaches were tested on different buildings of Politecnico di Milano University, where a restoration project of historical and modern facades is currently work in progress.

Paper Details

Date Published: 18 May 2012
PDF: 12 pages
Proc. SPIE 8354, Thermosense: Thermal Infrared Applications XXXIV, 83540I (18 May 2012); doi: 10.1117/12.920613
Show Author Affiliations
Marco Scaioni, Tongji Univ. (China)
Elisabetta Rosina, Politecnico di Milano (Italy)
Luigi Barazzetti, Politecnico di Milano (Italy)
Mattia Previtali, Politecnico di Milano (Italy)
Veronica Redaelli, Politecnico di Milano (Italy)

Published in SPIE Proceedings Vol. 8354:
Thermosense: Thermal Infrared Applications XXXIV
Douglas Burleigh; Gregory R. Stockton, Editor(s)

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