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Open AccessArticle

Geometric and Colour Data Fusion for Outdoor 3D Models

Industrial Engineering School, University of Extremadura, Avda. de Elvas, s/n, 06071 Badajoz, Spain
School of Computer Engineering, University of Castilla La Mancha, Ronda de Calatrava, 5, 13071 Ciudad Real, Spain
Author to whom correspondence should be addressed.
Sensors 2012, 12(6), 6893-6919;
Received: 29 February 2012 / Revised: 15 May 2012 / Accepted: 17 May 2012 / Published: 25 May 2012
This paper deals with the generation of accurate, dense and coloured 3D models of outdoor scenarios from scanners. This is a challenging research field in which several problems still remain unsolved. In particular, the process of 3D model creation in outdoor scenes may be inefficient if the scene is digitalized under unsuitable technical (specific scanner on-board camera) and environmental (rain, dampness, changing illumination) conditions. We address our research towards the integration of images and range data to produce photorealistic models. Our proposal is based on decoupling the colour integration and geometry reconstruction stages, making them independent and controlled processes. This issue is approached from two different viewpoints. On the one hand, given a complete model (geometry plus texture), we propose a method to modify the original texture provided by the scanner on-board camera with the colour information extracted from external images taken at given moments and under specific environmental conditions. On the other hand, we propose an algorithm to directly assign external images onto the complete geometric model, thus avoiding tedious on-line calibration processes. We present the work conducted on two large Roman archaeological sites dating from the first century A.D., namely, the Theatre of Segobriga and the Fori Porticus of Emerita Augusta, both in Spain. The results obtained demonstrate that our approach could be useful in the digitalization and 3D modelling fields. View Full-Text
Keywords: 3D modelling; texture fusion; 3D digitalization; range data 3D modelling; texture fusion; 3D digitalization; range data
MDPI and ACS Style

Merchán, P.; Adán, A.; Salamanca, S.; Domínguez, V.; Chacón, R. Geometric and Colour Data Fusion for Outdoor 3D Models. Sensors 2012, 12, 6893-6919.

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