光学精密工程2025，Vol.33Issue(1)：1-12,12.DOI:10.37188/OPE.20253301.0001
基于反格雷码辅助相移法的高鲁棒三维测量
Anti-Gray code aided phase-shift method for high-robust 3D measurements
摘要
Abstract
To address the challenges of low robustness and accuracy in structured light 3D measurement systems caused by environmental interference and the geometric characteristics of measured objects,this study focuses on improving the system's projection encoding method,projection efficiency,and related al-gorithms.First,to enhance system robustness,a novel approach combining complementary Gray code and phase-shifting is proposed.Second,to reduce the extended projection time resulting from multiple pat-terns,a synthetic pattern parallel loading method is introduced,significantly accelerating projection speed.Third,to mitigate issues such as light occlusion and shadows caused by object geometry,a dual-projector single-camera system is designed,expanding the measurement field of view and effectively eliminating shadows.Finally,a comprehensive performance comparison with existing methods,including complemen-tary Gray code with phase-shifting and the multi-frequency heterodyne method,is conducted to validate the proposed approach.Experimental results demonstrate that the proposed method substantially improves system robustness and overall performance.Specifically,the synthetic pattern parallel loading method en-hances projection efficiency by 55.51%compared to the baseline approach,achieving a measurement stan-dard deviation of 0.014 mm.The proposed method significantly enhances system robustness and accura-cy,surpassing traditional encoding techniques.关键词
三维测量/反格雷码/相移法/投影加速/双投影单相机Key words
three-dimensional measurement/anti-Gray code/phase shifting/projection acceleration/du-al-projector single-camera分类
计算机与自动化引用本文复制引用
冯云,李佩伍,伍文蕾,吕健宇,刘晓军,陈良洲..基于反格雷码辅助相移法的高鲁棒三维测量[J].光学精密工程,2025,33(1):1-12,12.基金项目
国家自然科学基金资助项目(No.51975233,No.52005204) （No.51975233,No.52005204）
中国科学挑战项目(No.TZ2018006-0102-02) （No.TZ2018006-0102-02）
广西科技厅重大研发专项(No.2022AB03020,No.2022JBGS022) （No.2022AB03020,No.2022JBGS022）
桂林市科技局重大研发专项(No.20220113-1,No.20210101-5) （No.20220113-1,No.20210101-5）
