3D Acquisition and modeling for crime scene documentation

This project is aimed at testing the performance of 3D optical acquisition and reverse engineering to carry out the contact-less gauging of crime scenes for their documentation and analysis. In particular, the study focuses on two aspects. The former is the “in-field” measurement and modeling of crime scenes.

The activity carried out by the Laboratory staff deals with a number of significant cases. A comprehensive summary of the experiences is in the references below.

Related Publications

Cavagnini, G.; Scalvenzi, M.; Trebeschi, M.; Sansoni, G. “Reverse engineering from 3D optical acquisition: application to Crime Scene Investigation“, Proceedings of Virtual Modelling and Rapid Manufacturing, Advanced Research in Virtual and Rapid Prototyping, pp. 195-201. 2007

Sansoni, G.; Docchio, F.; Trebeschi, M.; Scalvenzi, M.; Cavagnini, G.; Cattaneo, C. “Application of three-dimensional optical acquisition to the documentation and the analysis of crime scenes and legal medicine inspection“, 2007 2nd International Workshop on Advances in Sensors and Interface, pp. 1-10. 2007

Sansoni, G.; Cattaneo, C.; Trebeschi, M.; Gibelli, D.; Porta, D.; Picozzi, M. “Feasibility of contactless 3D optical measurement for the analysis of bone and soft tissue lesions: new technologies and perspectives in forensic sciences“, Journal of Forensic Sciences, Vol. 54, no. 3, pp. 540-545. 2009

Sansoni, G.; Cattaneo, C.; Trebeschi, M.; Gibelli, D.; Poppa, P.; Porta, D.; Maldarella, M.; Picozzi, M. “Scene-of-Crime Analysis by a 3-Dimensional Optical Digitizer: A Useful Perspective for Forensic Science“, The American Journal of Forensic Medicine and Pathology, Vol. 32 no. 3, pp. 280-286. 2011

The Winged Victory of Brescia

The natural commitment of the Laboratory to applied research and to cooperation with institutions led to the establishment of an agreement between the Comune of Brescia and the University of Brescia for the study and the 3D digitization of one of the symbols of the City, the statue named ‘Vittoria Alata’. This 2m-high, bronze statue is located at the Museo of Santa Giulia at Brescia.
The original motivation of the archaeologists was to measure with high accuracy the distances between pairs of fiduciary points, in order to determine the archetype of the statue, and to solve the problem of its collocation in the right temporal and spatial framework. 

To obtain the statue proportions, the statue was completely acquired using OPL-3D; Multiview registration, meshing and modeling of the mesh resulted in the virtual copy of the statue. By means of rapid prototyping, different copyes varying in the reproduction scale have been developed.

The copy of the Winged Victory developed by the Laboratory staff represented the city of Brescia at the exhibition of the ANCI Conference, Brescia, 8-9 november 2007.

ANCI 002.jpg

Relevant Publications

Sansoni, G.; Patrioli, A.; Docchio, F.; Morandini, F. “Rilievo tridimensionale della Vittoria mediante tecniche di misura non a contatto“, Nuove ricerche sul Capitolium di Brescia: scavi, studi e restauri, pp. 159-163. 2002

Sansoni, G.; Docchio, F.; Patrioli, A. “Il rilievo 3D di forme complesse: stato dell’arte, applicazioni e prospettive“, Atti del 7° Convegno Nazionale di Strumentazione e metodi di misura elettroottici, pp. 263-270. 2002 

Sansoni, G.; Docchio, F. “A special case of 3-D optical measurements and reverse engineering for automotive applications: the Ferrari 250 Mille Miglia“, Proceedings of the 21st IEEE Instrumentation and Measurement Technology Conference, Vol. 2, pp. 1354-1359. 2004

Sansoni, G.; Docchio, F. “3-D optical measurements in the field of cultural heritage: the case of the Vittoria Alata of Brescia“, IEEE Transactions on Instrumentation and Measurement, Vol. 54, no. 1, pp. 359-368. 2005