多线程半全局立体匹配工件内部检测方法

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关键词：双目视觉；立体匹配；三维重建；工件测量

中图分类号：TP391.41

DOI：10.3969/j.issn.1004-132X.2025.11.037

Abstract：To address the problems that traditional detection methods were difficult to conduct threedimensional quantitative analysis inside workpieces，a binocular vision detection method was proposed based on multi-threaded semi-global stereo matching（M-SGSM）. Firstly，the Zhang's calibration method was used to obtain the parameters of the binocular endoscope，and image distortion correction and epipolar rectification were performed. Secondly，a multi-threaded regional overlap segmentation strategy was designed to optimize the stereo matching algorithm，improve the eficiency of disparity map calculation，and generate a 3D color point cloud. Finally，a self-calibration area measurement method combined with Euclidean distance calculation was proposed to realize three-dimensional quantitative analysis.Experimental results show that the optimized stereo matching algorithm improves computational eficiency by approximately 30% ，the generated 3D point cloud has a clear structure，the Euclidean distance measurement error is less than 3% ，and the area measurement error is less than 1.5% . This method provides an efficient and high-precision solution for three-dimensional internal detection of workpieces.

Key words： binocular vision； stereo matching；3D reconstruction；workpiece measurement

0引言

在现代工业制造和工程领域中，精准的工件内部检测是保证产品质量和性能的关键。（剩余12584字）