Close Range Colour Artefact Scanning.
(Proceedings) Remote Sensing and Photogrammetric Society, Annual Conference, Newcastle, September 2007.
Remote Sensing and Photogrammetry Society: Newcastle, UK.
Close range 3D scanning of tabletop sized objects has seen significant growth in the past ten years with a wide variety of commercial and academic users exploiting the technology to provide measurement solutions for applications as diverse as the reverse engineering of design models to the recording of cultural, museum and medical artefacts and objects. In 2006 UCL commissioned the first state of the art Arius3D colour scanning system in Europe. Based on three colour solid state laser technology, the system is capable of digitising objects with simultaneously registered point colour at regular spatial sampling intervals of 100 microns with single point accuracy of the order of 25 microns. Drawing upon a variety of multidisciplinary research projects the authors will present examples from a body of work that encompasses cultural heritage, engineering and medical applications. Whilst the presentation principally describes experience with the Arius3D system, it also includes comparison data from a photogrammetrically tracked Metris K Scan system which is capable of a comparable level of geometric accuracy and represents current state of the art in hand held optically tracked monochrome scanning conferring the benefit of on-site rather than laboratory scanning. Informed comparison will be made with reference to the imaging and tracking principles deployed by each system and the differences between the data structures and processing steps required to produce finished models will be highlighted. Finally the advantages and disadvantages of the various scanning methods will be discussed, particularly in consideration of the requirement for colour, the time necessary to achieve output data that is fit for purpose and the 3D computer literacy skills of both acquisition personnel and the end users of the data.
|Title:||Close Range Colour Artefact Scanning|
|Event:||Remote Sensing and Photogrammetric Society, Annual Conference, Newcastle, September 2007|
|Keywords:||colour scanning, triangulation, Arius3D|
|UCL classification:||UCL > School of BEAMS
UCL > School of BEAMS > Faculty of Engineering Science
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