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首页> 外文会议>International Conference on Computational Science and Its Applications - ICCSA 2003 Pt.3 May 18-21, 2003 Montreal, Canada >Automated Scan Plan Generation Using STL Meshes for 3D Stripe-Type Laser Scanner
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Automated Scan Plan Generation Using STL Meshes for 3D Stripe-Type Laser Scanner

机译：使用STL网格自动生成3D条纹型激光扫描仪的扫描计划

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摘要

Reverse engineering and computer-aided inspection technologies play an important role in reducing the lead-time and improving the quality in the production of products containing complex and aesthetic surfaces. In this paper, we propose a laser scan planning system for complex freeform surfaces that is based on STL (STereoLithography) meshes. The developed laser scan planning system consists of three steps and it is assumed that the original CAD model of the part exists. Firstly, the surface model is approximated by STL meshes. The meshes are generated considering the curvature of the model so that more vertices are sampled in high curvature regions. From the mesh model, the region for which the scanning will be performed is selected and the normal vector of each node point is estimated. Secondly, scan directions and regions are determined through the region growing method. Also, scan paths are generated by generating a minimum-bound rectangle of points to be scanned. Finally, the generated scan directions and paths are validated by checking optical constraints and the collision avoidance.
机译：逆向工程和计算机辅助检查技术在减少包含复杂而美观表面的产品的交货时间和提高生产质量方面起着重要作用。在本文中，我们提出了一种基于STL（STereoLithography）网格的复杂自由曲面的激光扫描计划系统。开发的激光扫描计划系统包括三个步骤，并假定存在零件的原始CAD模型。首先，通过STL网格对表面模型进行近似。考虑模型的曲率生成网格，以便在高曲率区域中采样更多的顶点。从网格模型中，选择将对其执行扫描的区域，并估计每个节点的法线向量。其次，通过区域生长方法确定扫描方向和区域。另外，通过生成要扫描的点的最小边界矩形来生成扫描路径。最后，通过检查光学约束和避免碰撞来验证生成的扫描方向和路径。

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