Three-dimensional reconstruction technique based on triangular phase shift and complementary gray code
文献类型：会议论文
| 作者 | Gao, Ruixue1,2; Zhang, Pengchang2; Wang, Pengchong2; Ling, Xi1,2 |
| 出版日期 | 2021 |
| 会议日期 | 2021-06-20 |
| 会议地点 | Beijing, China |
| 卷号 | 12065 |
| DOI | 10.1117/12.2606547 |
| 英文摘要 | Structured light 3D reconstruction technology has the advantages of non-contact, low cost and high reliability, and is widely used in industrial parts defect detection, cultural relics 3D digitization and other fields. As the core part of structured light, coding method is the key element to obtain 3D scene information, which directly affects the accuracy of 3D reconstruction. The combination of gray coding and phase shifting is a typical method for 3D shape measurement. However, due to the complexity of sinusoidal fringe calculation, and the fringe pattern boundary cannot be strictly aligned, there is a step change problem, which limits the application of this method in the field of real-time high-speed three-dimensional measurement. In this paper, the phase shift method of triangular wave and gray coding are combined to measure the 3D morphology. The triangular wave function only uses two raster images and the phase information can be obtained by simple intensity ratio calculation. The binary defocus technique can shorten the projection time, but it blurs the edge boundary of gray code and aggravates the step problem of reconstruction of object surface. In order to solve this problem, the complementary gray code whose fringe width is half of the sinusoidal fringe period is used to correct the period deviation. The experimental results show that the proposed method can reduce the number of fringe projection, simplify the calculation steps and shorten the time of data processing, so it is feasible. © 2021 SPIE. |
| 产权排序 | 1 |
| 会议录 | AOPC 2021: Optical Sensing and Imaging Technology
 |
| 会议录出版者 | SPIE |
| 语种 | 英语 |
| ISSN号 | 9781510650053 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/95658]  |
| 专题 | 西安光学精密机械研究所_光学影像学习与分析中心 |
| 作者单位 | 1.University of Chinese Academy of Science, Beijing; 100049, China 2.Xi'an Institute of Optics and Precision Mechanics of CAS, Xi'an; 710119, China; |
| 推荐引用方式 GB/T 7714 | Gao, Ruixue,Zhang, Pengchang,Wang, Pengchong,et al. Three-dimensional reconstruction technique based on triangular phase shift and complementary gray code[C]. 见:. Beijing, China. 2021-06-20. |
入库方式： OAI收割
来源：西安光学精密机械研究所
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