Measurement technics (Article in French)

P Menghini, G Marlati


span style="font-size: 12px; line-height: 14px" class="Apple-style-span"Aim of the research has been the evaluation of an image processing technique suggested for measuring procedures in the field of dental materials and devices studies. An analysis of measurement systems and largest employment's equipments in the biotechnologies field has been performed. Particularly, digital and image processing technologies have been considered and, between them, an evaluation of ";Image Tool"; software, made by UTHSCSA and available freeware on Internet has been carried out. The ";Image Tool"; software showed to be easy in handling and reliable on this results. Since it is based on image processing, the measuring precision is related to subject to be evaluated dimensions and always in the 1/1000 tolerance. This software also allow the direct surfaces measuring and comparing. The process accuracy is at the same level of mechanical regulation's measuring instruments (calipers, micrometres, surface probes) but it is not comparable to the laser controlled equipments, like CAD-CAM systems, micrometres and surface explores, precision which are much more sophisticated and expensives./span

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