Super-resolution Imaging Lidar based on Fourier Ptychography | |
Wang, Yuming1,2; Zhao, Hui1; Yang, Mingyang1,2; Qu, Youshan1; Fan, Xuewu1 | |
2021 | |
会议名称 | 10th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Intelligent Sensing Technologies and Applications 2021 |
会议录名称 | 10th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Intelligent Sensing Technologies and Applications |
卷号 | 12075 |
会议日期 | 2021-06-14 |
会议地点 | Chengdu, China |
出版者 | SPIE |
产权排序 | 1 |
摘要 | Traditional imaging lidar exhibits an obvious trade-off between the resolution and the size of its optical system. In order to realize a miniaturized super-resolution (SR) imaging lidar, Fourier ptychography (FP) has been introduced to break through the diffraction limit of the camera lens. FP, derived from synthetic aperture method, is capable of acquiring high resolution and large field-of-view reconstructed images without increasing the aperture size by capturing multiple images with diverse incident angles before computationally combining with phase retrieval algorithm. In this work, a SR imaging lidar system was proposed by using reflective-type FP, which mainly consists of a s-CMOS camera, a Nd:YAG laser, and a 2-D translation stage so as to achieve aperture scanning on the x and y axes. To validate this technique experimentally, a set of images of a positive USAF chrome-on-glass target were obtained for quantitative analysis, and an uneven 1 yuan nickel-on-steel RMB coin was used to simulate the applicability of the SR imaging lidar in practical applications. The observations show that the obtained images based on FP technique have an obvious improvement in resolution, contrast, and clarity. It is worth mentioning that the resolution of these reconstructed images is increased over 3 times in the experiment on the USAF target. Moreover, the images under different apertures were collected, processed and analyzed, which suggest the initial image quality has a non-negligible influence on the reconstructed results. This technique not only improves the performance of the imaging lidar while maintaining low costs, but also bring new vitality in remote image recognition and analysis. © 2021 SPIE |
关键词 | Fourier ptychography imaging lidar phase retrieval super-resolution |
作者部门 | 空间光学技术研究室 |
DOI | 10.1117/12.2604172 |
收录类别 | EI |
ISBN号 | 9781510650251 |
语种 | 英语 |
ISSN号 | 0277786X;1996756X |
EI入藏号 | 20220911705515 |
引用统计 | |
文献类型 | 会议论文 |
条目标识符 | http://ir.opt.ac.cn/handle/181661/95736 |
专题 | 空间光学技术研究室 |
通讯作者 | Zhao, Hui; Fan, Xuewu |
作者单位 | 1.Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an; 710119, China; 2.University of Chinese Academy of Sciences, Beijing; 100049, China |
推荐引用方式 GB/T 7714 | Wang, Yuming,Zhao, Hui,Yang, Mingyang,et al. Super-resolution Imaging Lidar based on Fourier Ptychography[C]:SPIE,2021. |
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文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
Super-resolution Ima(1003KB) | 会议论文 | 限制开放 | CC BY-NC-SA | 请求全文 |
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