Multi-View Structured Light 3D Measurement System  

作　　者：LU Ping ZHANG Yingjie DENG Fangwei LIU Wei HUANG Shijun 

机构地区：[1]ZTE Corporation,Shenzhen 518057,China [2]Southern University of Science and Technology,Shenzhen 513000,China

出　　处：《ZTE Communications》2024年第4期53-58,共6页中兴通讯技术（英文版）

基　　金：supported by the 2023 Guangdong Basic and Applied Basic Research Fund Regional Joint Fund Key Project under Grant No. 2023B1515120017;2023 Key Project of Guangdong Provincial Department of Education for General Universities under Grant No. 2023ZDZX3024;ZTE Industry-University-Institute Cooperation Funds under Grant No. K2133Z167

摘　　要：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 0.48µm.

关 键 词：3D measurement structured light MULTI-VIEW 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] TH74[自动化与计算机技术—计算机科学与技术]