| 基于虚拟双目的条纹结构光三维重建 |
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| 引用本文： | 朱新军,侯林鹏,宋丽梅,袁梦凯,王红一,武志超.基于虚拟双目的条纹结构光三维重建[J].红外与激光工程,2022,51(11):20210955-1-20210955-9. |
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| 作者姓名： | 朱新军 侯林鹏 宋丽梅 袁梦凯 王红一 武志超 |
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| 作者单位： | 1.天津工业大学 人工智能学院，天津 300387 |
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| 基金项目： | 国家自然科学基金（61905178） |
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| 摘 要： | 为解决传统双目条纹结构光三维重建存在的同步性和成本高等问题，提出了基于虚拟双目的条纹结构光三维重建方法。采用单相机和两块双棱镜及投影仪设计了具有双目视觉功能的虚拟双目条纹结构光三维重建系统。通过双棱镜折射和分光改变被测对象表面反射光的路径，使用一个相机同时完成多视角的图像采集。通过多频外差法和立体匹配、双目标定得到被测对象的深度信息并重建点云。实验表明，文中提出的方法和真实双目结构光方法测量标准球的均方根误差分别为0.037 9 mm和0.030 5 mm。文中提出的方法可促进双目条纹结构光技术在快速、低成本、小型化等方面发展，同时该方法可推广到彩色相机条纹结构光三维重建及投影散斑结构光三维重建。
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| 关 键 词： | 三维重建 虚拟双目 条纹结构光 多频外差 双棱镜 |
| 收稿时间： | 2022-03-10 |
Fringe structured light 3D reconstruction based on virtual binocular |
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| Affiliation: | 1.School of Artificial Intelligence, Tiangong University, Tianjin 300387, China2.Tianjin Key Laboratory of Intelligent Control of Electrical Equipment, Tianjin 300387, China3.School of Control Science and Engineering, Tiangong University, Tianjin 300387, China |
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| Abstract: | In order to solve such problems as synchronization, high cost and others in traditional binocular fringe structured light 3D reconstruction, a virtual binocular fringe structured light 3D reconstruction method based on a single camera is proposed. The virtual binocular fringe structured light 3D reconstruction system with binocular vision is designed using a single camera, two biprisms and one projector. Biprism refraction and light splitting are used to change the path of reflected light on the surface of the measured object, by which the goal of acquisition of multi-view images are attained under single camera. Through the multi-frequency heterodyne method, stereo matching and binocular calibration of virtual binocular, the depth information of the measured object is obtained and the point cloud is reconstructed. Experimental results show that the root mean square error of the proposed method and the real binocular structured light method to measure the standard ball are 0.037 9 mm and 0.030 5 mm respectively. The proposed method in this paper can promote the development of binocular fringe structured light technology in the aspects of rapidity, low cost, miniaturization, etc. At the same time, this method can be extended to the color camera based fringe structured light 3D reconstruction and projection speckle structured light 3D reconstruction. |
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