首页|Multi-View Structured Light 3D Measurement System
Multi-View Structured Light 3D Measurement System
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维普
Vision-based measurement technology benefits high-quality manufacturers through improved dimensional precision,enhanced geo-metric tolerance,and increased product yield. The monocular 3D structured light visual sensing method is popular for detecting online parts since it can reach micron-meter depth accuracy. However,the line-of-sight requirement of a single viewpoint vision system often fails when hiding occurs due to the object's surface structure,such as edges,slopes,and holes. To address this issue,a multi-view 3D structured light vi-sion system is proposed in this paper to achieve high accuracy,i.e.,Z-direction repeatability,and reduce hiding probability during mechani-cal dimension measurement. The main contribution of this paper includes the use of industrial cameras with high resolution and high frame rates to achieve high-precision 3D reconstruction. Moreover,a multi-wavelength (heterodyne) phase expansion method is employed for high-precision phase calculation. By leveraging multiple industrial cameras,the system overcomes field of view occlusions,thereby broadening the 3D reconstruction field of view. Finally,the system achieves a Z-axis repetition accuracy of 0.48 μm.
3D measurementstructured lightmulti-view
LU Ping、ZHANG Yingjie、DENG Fangwei、LIU Wei、HUANG Shijun
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ZTE Corporation,Shenzhen 518057,China
Southern University of Science and Technology,Shenzhen 513000,China
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维普
