Kaufman, John and Rennie, Allan and Clement, Morag (2015) Single camera photogrammetry for reverse engineering and fabrication of ancient and modern artefacts. In: 25th CIRP Design Conference 2015 - Innovative Product Creation, 2015-03-022015-03-04, Technion – Israel Institute of Technology.
Full text not available from this repository.Abstract
Photogrammetry has been used for recording objects for well over one hundred and fifty years. Modern photogrammetry, or digital image capture, can be used with the aid of a single medium range DSLR camera, to transform two-dimensional (2D) images into three-dimensional (3D) CAD spatial representations, and together with the use of additive manufacturing (AM) or 3D Printing technology, geometric representations of original cultural, historic and geological artefacts can be fabricated using a process known as Reverse Engineering. Being able to replicate such objects is of great benefit in education; if the original object cannot be handled because it is too old or delicate, then replicas can give the handler a chance to experience the size, texture and weight of rare objects. Photogrammetry equipment is discussed, the objective being simplicity of execution for eventual realisation of physical products such as the artefacts discussed. As the processing power of computers has increased and become more widely available, and with the use of computer software programs it is now possible to digitally combine multi-view photographs, taken from 360° around the object, into 3D CAD representational virtual images. The resulting data files are then reprocessed with a secondary computer program for the additive manufacturing machines to produce replicated models of the originals. Three case studies are documented: the reproduction of a small modern clay sculpture; a 3000-year-old Egyptian artefact; and an Ammonite fossil, all successfully recreated, using additive manufacturing technology.