Kaufman, John and Rennie, Allan and Clement, M. (2015) Reverse engineering using close range photogrammetry for additive manufactured reproduction of Egyptian artefacts and other objets d'art. Journal of Computing and Information Science in Engineering, 15 (1): 011006. ISSN 1530-9827
Full text not available from this repository.Abstract
Photogrammetry has been in use for over one hundred and fifty years. This research considers how digital image capture using a medium range Nikon Digital SLR camera, can be transformed into 3D virtual spatial images, and together with additive manufacturing (AM) technology, geometric representations of the original artefact can be fabricated. The research has focused on the use of photogrammetry as opposed to laser scanning (LS), investigating the shift from LS use to a single Digital Single Lens Reflex (DSLR) camera exclusively. The basic photogrammetry equipment required is discussed, with the main objective being simplicity of execution for eventual realisation of physical products. As the processing power of computers has increased and become widely available, at affordable prices, software programs have improved, so it is now possible to digitally combine multi-view photographs, taken from 360°, into 3D virtual representational images. This has now led to the possibility of 3D images being created without LS intervention. Two methods of digital data capture are employed and discussed, in acquiring up to 150 digital data images, taken from different angles using a single DSLR camera together with the specific operating conditions in which to photograph the objects. Two case studies are documented, the first a modern clay sculpture, whilst the second, involves two 3000 year old Egyptian clay artefacts. All and the objects were recreated using AM technology. It has been shown that with the use of a standard DSLR camera and computer software, 2D images can be converted into 3D virtual video replicas as well as solid, geometric representation of the originals.