3D Acquisition System for the Measurement of the Foot

This study concerns the conception of a 3D scanner dedicated to the human foot for its 3D reconstruction for biomedical applications. The view of this article has been to show the research made since two years. This system must allow to extract metrology of human foot. Indeed, the precision of 1mm has to allow the quality of the manufacture of adapted prostheses to the patient feet. This article is directed towards two axes : on the one hand, the explanation of the encountered problems and objectives defining the specifications and on the other hand, the solutions brought and choices for the acquisition system. The main goal of the system is to be able to measure various pathologies of met foot. Therefore, the solutions brought must make it possible to obtain a completely automatic system. They include the choice of the extraction method of points of the foot surface and the modelling to rebuild surface starting from the cloud of points. It must be also calibrated to supply the metrology of the foot. Moreover, the system is built with several color cameras. These various choices allow to extract the metrology of the foot in the desired resolution.