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Distance sensing to rough semitransparent and multiscattering materials using dynamic speckles

机译:使用动态斑点对粗糙的半透明和多散射材料进行距离感测

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摘要

Noncontact methods of distance measurements to a moving surface using laser light are relevant for many industrial applications, such as surface profile and position monitoring, thickness measurements, and wear estimation. Application of existing methods (e.g., triangulation) is limited especially for non-homogeneous, semitransparent and rough materials (paper, wood, plastic). The task is even more challenging for fast moving objects. We present a novel online method of distance sensing to semitransparent and multiscattering surfaces (papers, woods, polymers) based on spatial filtering of dynamic speckles. We validated a proposed method at the speed of the test surface as high as 35 m/s.
机译:使用激光到运动表面的距离测量的非接触方法与许多工业应用相关,例如表面轮廓和位置监控,厚度测量以及磨损估算。现有方法(例如三角测量)的应用受到限制,尤其是对于非均质,半透明和粗糙的材料(纸张,木材,塑料)。对于快速移动的物体,该任务甚至更具挑战性。我们提出了一种基于在线动态斑点的空间滤波的半透明和多散射表面(纸张,木材,聚合物)距离传感的新型在线方法。我们在高达35 m / s的测试表面速度下验证了一种建议的方法。

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