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首页> 外文会议>Optical Measurement Systems for Industrial Inspection V pt.1; Proceedings of SPIE-The International Society for Optical Engineering; vol.6616 pt.1 >Multi resolution optical 3D sensor
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Multi resolution optical 3D sensor

机译：多分辨率3D光学传感器

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摘要

A new multi resolution self calibrating optical 3D measurement system using fringe projection technique named "kolibri FLEX multi " will be presented. It can be utilised to acquire the all around shape of small to medium objects, simultaneously. The basic measurement principle is the phasogrammetric approach /1,2,3/ in combination with the method of virtual landmarks for the merging of the 3D single views. The system consists in minimum of two fringe projection sensors. The sensors are mounted on a rotation stage illuminating the object from different directions. The measurement fields of the sensors can be chosen different, here as an example 40mm and 180mm in diameter. In the measurement the object can be scanned at the same time with these two resolutions. Using the method of virtual landmarks both point clouds are calculated within the same world coordinate system resulting in a common 3D-point cloud. The final point cloud includes the overview of the object with low point density (wide field) and a region with high point density (focussed view) at the same time. The advantage of the new method is the possibility to measure with different resolutions at the same object region without any mechanical changes in the system or data post processing. Typical parameters of the system are: the measurement time is 2min for 12 images and the measurement accuracy is below 3μm up to 10 μm. The flexibility makes the measurement system useful for a wide range of applications such as quality control, rapid prototyping, design and CAD/CAM which will be shown in the paper.
机译：将介绍一种使用条纹投影技术的新型多分辨率自校准光学3D测量系统，该系统称为“ kolibri FLEX multi”。它可以用来同时获取中小型物体的周围形状。基本的测量原理是相图方法/ 1,2,3 /与用于合并3D单视图的虚拟界标方法。该系统至少包含两个条纹投影传感器。传感器安装在旋转平台上，从不同方向照亮物体。传感器的测量范围可以选择为不同的，例如直径为40mm和180mm。在测量中，可以使用这两种分辨率同时扫描对象。使用虚拟地标的方法，可以在同一世界坐标系内计算两个点云，从而生成一个公共的3D点云。最终点云同时包含具有低点密度（宽视野）的对象的概览和具有高点密度（聚焦视图）的区域。新方法的优点是可以在同一物体区域以不同的分辨率进行测量，而无需对系统进行任何机械更改或进行数据后处理。该系统的典型参数是：12张图像的测量时间为2分钟，测量精度在3μm以下至10μm以下。灵活性使该测量系统可用于多种应用，例如质量控制，快速原型制作，设计和CAD / CAM（将在本文中显示）。

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