Reconstruction of 3D models of cast sculptures using close-range photogrammetry

Ž. Santoši, M. Šokac, I. Budak, Faculty of Technical Sciences, University of Novi Sad, Novi Sad, Serbia. D. Korolija-Crkvenjakov, Gallery of Matica Srpska, Novi Sad, Serbia. B. Kosec, Faculty of Natural Sciences and Engineering, University of Ljubljana, Ljubljana, Slovenia. M. Soković, Faculty of Mechanical Engineering, University of Ljubljana, Ljubljana, Slovenia. This paper presents the possibilities of application of close-range photogrammetry, based on the Structure-fromMotion (SfM) approach, in 3D model’s reconstruction of bronze cast sculptures. Special attention was dedicated to the analysis of image processing strategy, and its impact on the 3D model reconstruction quality. For the purpose of analysis a bust of Nikola Tesla, placed in front of the Faculty of Technical Sciences University of Novi Sad was used. Experimental results indicate that the strategy employing multi-group photo processing provides substantial reductions in processing time while providing satisfactory results in 3D reconstruction.