Assessment of laser-based reverse engineering systems for tangible cultural heritage conservation

The process of acquiring the geometry and shape of a part and reconstructing its digital model is known as reverse engineering (RE). This approach is usefully employed in fields as diverse as product design, design modification, geometrical inspection, worn or damaged parts repair or remanufacturing, when physical object drawings, documentation or computer models are not available. The recent scientific and technical developments of RE methods and tools have broadened the possibilities of applications in the field of cultural heritage conservation ranging from reproduction (e.g. via rapid prototyping), maintenance (e.g. computer-aided repair), multimedia tools for education and dissemination (e.g. virtual museums), to artefact condition monitoring (e.g. computer-aided inspection) and many more. The first stage of the RE procedure is digital data acquisition that can be carried out by means of several different tools. The selection of the 3D digitising system is crucial as it directly affects the process time and the quality of the point cloud, which determines the final digital model. In this research work, following the EC FP7 open topic on ‘Equipment assessment for laser based applications’ compiled in Horizon 2020, two non-contact laser-based RE systems, respectively, based on a coordinate measuring machine and a portable 3D scanning equipment, are utilised for the digitisation and reconstruction of a free-form tangible cultural heritage artefact to comparatively assess the RE system's performance in terms of process time, accuracy and ease of use.

[1]  Alain Bernard,et al.  Virtual engineering: Methods and tools , 2005 .

[2]  Enrico Vezzetti,et al.  Reverse Engineering: applicazione al recupero di bassorilievi , 2003 .

[3]  Yongtae Jun,et al.  A rapid reverse engineering system for reproducing 3D human busts , 2002 .

[4]  José Carlos Teixeira,et al.  Cultural Heritage in the Mature Era of Computer Graphics , 2000, IEEE Computer Graphics and Applications.

[5]  Marc Levoy,et al.  The digital Michelangelo project: 3D scanning of large statues , 2000, SIGGRAPH.

[6]  Alain Bernard,et al.  Impact of New 3D Numerical Devices and Environments on Redesign and Valorisation of Mechanical Systems , 2007 .

[7]  Duc Truong Pham,et al.  Reverse engineering: An industrial perspective , 2008 .

[8]  Georgios Papaioannou,et al.  Virtual Archaeologist: Assembling the Past , 2001, IEEE Computer Graphics and Applications.

[9]  A.W.L. Yao,et al.  Applications of 3D scanning and reverse engineering techniques for quality control of quick response products , 2005 .

[10]  Anath Fischer,et al.  3D scanning and level of detail modelling for design and manufacturing , 1998 .

[11]  Richard Levy,et al.  Reconstructing a thule whalebone house using 3D imaging , 2006, IEEE Multimedia.

[12]  Waguih ElMaraghy,et al.  Design by Quality Product Digitization , 2001 .

[13]  Ralph R. Martin,et al.  Reverse engineering of geometric models - an introduction , 1997, Comput. Aided Des..

[14]  Bopaya Bidanda,et al.  Reverse engineering: an evaluation of prospective non-contact technologies and applications in manufacturing systems , 1991 .

[15]  Pramod N. Chivate,et al.  Solid-model generation from measured point data , 1993, Comput. Aided Des..

[16]  Gabriele Guidi,et al.  3D digitizing of cultural heritage , 2001 .