基于传像束的小视场双目结构光三维形貌恢复  

3D shape restoration of binocular structure light in small field of view based on image bundles

作　　者：袁卓凡 刘元坤[1] 赖姗姗 李剑[2] 王旭[2] YUAN Zhuofan;LIU Yuankun;LAI Shanshan;LI Jian;WANG Xu(Opto-Electronic Department,Sichuan University,Chengdu 610065,China;Institute of Fluid Physics,CAEP,Mianyang 621999,China)

机构地区：[1]四川大学电子信息学院,四川成都610065 [2]中国工程物理研究院流体物理研究所,四川绵阳621999

出　　处：《应用光学》2021年第1期113-118,共6页Journal of Applied Optics

基　　金：国家自然科学基金(61675141)。

摘　　要：提出基于传像束传像和双目结构光相结合的三维测量系统,实现对无法直接成像场景,如爆轰、冲击等环境下的小视场物体三维面形测量。测量时,结构光直接投影到待测物体表面,变形条纹图像首先被成像到传像束前端面,再被传递到传像束后端面,并最终被成像到相机像平面,再由三频相位展开技术计算出对应相位分布后,即可根据双目匹配计算出待测物体高度。实验表明,传像束系统能完成高精度的微小物体三维形貌重建,且由于传像束的引入,增加了测量系统的灵活性。A 3D measurement system based on the combination of image bundles and binocular structured light was proposed.It could measure the three-dimensional shape of small objects under the environment of detonation and impact,which could not be directly measured.The structured light was directly projected onto the surface of the measured object and the distorted fringe images were imaged to the front side of the image bundles.Then those images were collected into the camera by another imaging lens after transmitted to the other side of the image bundles.The height of the measured object could be reconstructed by the binocular matching as long as the corresponding phase distributions were restored by the three-frequency phase unwrapping algorithm.The experimental results show that the measuring system via image bundles can fulfill the 3D morphology reconstruction of the small objects with high precision and can bring the advantages of flexibility due to the introduction of image bundles.

关 键 词：传像束 双目视觉 三频相位展开 三维测量 

分 类 号：TN206[电子电信—物理电子学] O438[机械工程—光学工程]