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Design of a fiber optics fringe projector for 3D reconstruction of dental elements

机译:用于牙科元素3D重建的光纤条纹投影仪的设计

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In this paper the design of a miniaturized fringe-projector is presented. The projector is intended to be inserted in a triangulation scheme in order to allow implementation of projection moiré technique. The system is specifically designed to be part of a device for contouring complex shapes like those of dental elements. The proposed fringe projection system is based upon the projection of the pattern obtained as a result of the interference between the two points-like sources constituted by the wavefronts emerging by two fiber tips put next together. Results obtained on calibrated specimens confirms the feasibility of the proposed approach. In fact, shape errors observed for the calibrated specimens are below the level of precision required in tooth reconstruction (100 µm).
机译:在本文中,提出了一种小型条纹投影仪的设计。投影仪打算以三角剖分方式插入,以实现投影莫尔技术。该系统专门设计为轮廓复杂的设备(如牙科元件)的一部分。所提出的条纹投影系统是基于图案的投影,该图案是由于两个点状光源之间的干涉而获得的,该两个点状光源是由紧挨在一起的两个光纤尖端出现的波前构成的。在校准样品上获得的结果证实了该方法的可行性。实际上,对标本观察到的形状误差低于牙齿重建所需的精度水平(100 µm)。

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