3D part inspection path planning of a laser scanner with control on the uncertainty
3D part inspection path planning of a laser scanner with control on the uncertainty
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DOI：
10.1016/j.cad.2010.12.014
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发表时间：
2011-04-01
影响因子：
4.3
通讯作者：
Fontaine, Jean-Francois
中科院分区：
文献类型：
--
作者：
Mahmud, Mussa;Joannic, David;Fontaine, Jean-Francois
这篇文章关注的是使用激光扫描仪测量机械零件的过程。从工业应用的角度来看，目标是保证扫描过程中产品几何规格的测量精度。所提出的方法可以概括如下：第一步包括分析不同规格的公差范围，并将每个几何实体的最大测量不确定度。这种不确定性取决于激光平面和扫描表面之间的入射角。在第二步中，使用基于可见性概念的方法，从被检零件的CAD模型中找到正确的传感器引导。最后，对点云数据进行分割后，进行测量并控制测量参数。一个例子说明了这种方法。(C)2011爱思唯尔有限公司保留所有权利。
This article concerns the measurement process of mechanical parts using laser scanners. From the point of view of industrial applications, the objective is to guarantee the measurement accuracy during the scanning with regard to the geometrical product specifications. The proposed method can be summarized as follows: the first step consists of analyzing the interval of tolerance for the different specifications and to attribute to every geometrical entity a maximal uncertainty of measurement. This uncertainty depends on the angle of incidence between the laser plane and the scanned surface. In the second step, an approach based on the concept of visibility is used from the CAD model of the inspected part to find correct sensor guidance in a metrological point of view. A few position-points from this set are used to define the scanning path. Finally, the measurement can be carried out and the specifications can be controlled after the segmentation of the point clouds. An example illustrates the approach. (C) 2011 Elsevier Ltd. All rights reserved.