NSSC OpenIR
Edge re-projection method for high-quality edge reconstruction in non-line-of-sight imaging
Alternative TitleWOS:000526523300041;20200908230319
Shi, Zhengyang; Wang, Xia; Li, Yang1,3; Sun, Zhibin2,3; Zhang, Wenxi1,3
Source PublicationAPPLIED OPTICS
2020
Volume59Issue:6Pages:1793-1800
DOI10.1364/AO.376403
ISSN1559-128X
Language英语
KeywordBACK-PROJECTION OBJECTS
AbstractHow to image scenes or detect objects hidden from view has been of increasing interest in recent years. Previous studies have demonstrated non-line-of-sight object reconstruction by using time-resolved detectors and a back-projection algorithm, whereas the filtered back-projection method reconstructs high-frequency spatial information, such as the edge of an object, with poor quality. Here we propose an optimized back-projection algorithm to improve the object edge reconstruction quality. We base our method on the observation that the spatial frequency and geometric information required to reconstruct an edge is distributed unevenly across scanning positions of the relay wall. Our method extracts edge voxels from the first projection result, correcting the signal response weight at different scanning positions according to their relative contributions to the object edge reconstruction, and then re-projects data. Simulations and experiments show that compared to the filtered back-projection algorithm, our method achieves better reconstruction results for the object edge, which makes it easier to distinguish the object shape. (C) 2020 Optical Society of America
Indexed BySCI ; EI
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Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/7666
Collection中国科学院国家空间科学中心
Affiliation1.Beijing Inst Technol, Sch Opt & Photon, Beijing 100081, Peoples R China
2.Chinese Acad Sci, Acad Optoelect, Beijing 100094, Peoples R China
3.Chinese Acad Sci, Natl Space Sci Ctr, Beijing 100190, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Shi, Zhengyang,Wang, Xia,Li, Yang,et al. Edge re-projection method for high-quality edge reconstruction in non-line-of-sight imaging[J]. APPLIED OPTICS,2020,59(6):1793-1800.
APA Shi, Zhengyang,Wang, Xia,Li, Yang,Sun, Zhibin,&Zhang, Wenxi.(2020).Edge re-projection method for high-quality edge reconstruction in non-line-of-sight imaging.APPLIED OPTICS,59(6),1793-1800.
MLA Shi, Zhengyang,et al."Edge re-projection method for high-quality edge reconstruction in non-line-of-sight imaging".APPLIED OPTICS 59.6(2020):1793-1800.
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