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首页> 外文期刊>Optics and Lasers in Engineering >Rapid 3D surface profile measurement of industrial parts using two-level structured light patterns
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Rapid 3D surface profile measurement of industrial parts using two-level structured light patterns

机译：使用两级结构化光图案快速测量工业零件的3D表面轮廓

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摘要

This paper aims to present a rapid 3D shape measurement system based on novel monochromatic structured light patterns. The system consists of projectors shooting the fringe patterns onto the inspected parts and cameras recording the corresponding distorted images. Using the two-level fringe patterns, the correspondence between the projector image and camera image can be established with sub-pixel accuracy. The two-level pattern is based on three spatiotemporal binary stripes, in which the value of the stripe boundary (first-level coding) is determined by the two adjacent stripes patterns over time and the codeword of the strip boundary (second-level coding) depends on its values and neighbor boundary values in space. The proposed pattern is robust to ambience light variation and part texture. Moreover, the occlusion can be overcome and high density measurement can be achieved. Experiments with different 3D parts are conducted to evaluate the robustness and accuracy of the inspection system using the two-level patterns. The results show that the system has desired properties of high accuracy, high density, rapid acquisition, and robustness, which are essential for industrial application.
机译：本文旨在提出一种基于新型单色结构光图案的快速3D形状测量系统。该系统包括将条纹图案投射到被检零件上的投影仪和记录相应失真图像的摄像机。使用两级条纹图案，可以以亚像素精度建立投影仪图像和相机图像之间的对应关系。二级模式基于三个时空二进制条带，其中条带边界的值（第一级编码）由两个相邻的条带模式随时间和条带边界的码字确定（第二级编码）取决于其值和空间中的相邻边界值。所提出的图案对于环境光变化和零件纹理具有鲁棒性。而且，可以克服闭塞并且可以实现高密度测量。进行了具有不同3D零件的实验，以使用两级模式来评估检查系统的鲁棒性和准确性。结果表明，该系统具有所需的高精度，高密度，快速采集和鲁棒性，这对于工业应用至关重要。

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  • 来源
    《Optics and Lasers in Engineering》 |2011年第7期|p.907-914|共8页
  • 作者

    Jing Xu; Ning Xi; Chi Zhang; Jianguo Zhao; Bingtuan Gao; Quan Shi;

  • 作者单位

    Department of Electrical and Computer Engineering, Michigan State University, East Lansing, MI 48824, USA Department of Precision Instruments and Mechanology, Tsinghua University, Beijing 100084, China;

    Department of Electrical and Computer Engineering, Michigan State University, East Lansing, MI 48824, USA;

    Department of Electrical and Computer Engineering, Michigan State University, East Lansing, MI 48824, USA;

    Department of Electrical and Computer Engineering, Michigan State University, East Lansing, MI 48824, USA;

    Department of Electrical and Computer Engineering, Michigan State University, East Lansing, MI 48824, USA;

    PPG Industries Inc., Class Research Center, 400 Guys Run Road, Cheswick, PA 15024, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    structured light; measurement; calibration;

    机译：结构化光测量;校准;

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