An Optical Inspection System with the Ability to Identify Surface Roughness and Detect the 3-D Shape of Metal Parts

在工业中，基于主动三角测量技术的激光测距仪是有用的，因为它能够在测量精度和测量时间之间取得良好的平衡。然而，传统的基于三角测量的测距仪很难应用于镜面物体的三维形状测量。在本研究中，我们提出了一种先进的激光测距仪来获取镜面物体的三维形状，并开发了一种基于反射线追踪的激光扫描模拟器的原型测距仪，以有效地扫描镜面物体。

In industry, a laser rangefinder based on an active triangulation technique is useful because it is able to achieve a favorable balance between measurement accuracy and measurement time. However, conventional triangulation-based rangefinders are known to be difficult to apply to the 3-D shape measurement of specular objects. In this study, we proposed an advanced laser rangefinder to obtain the 3-D shape of specular objects and developed a prototype rangefinder equipped with the laser scanning simulator based on inverse raytracing to scan specular objects efficiently.