Fast non-line-of-sight imaging based on product-convolution expansions | |
Xu, Weihao2,3; Chen, Songmao1,3; Tian, Yuyuan2,3; Wang, Dingjie2,3; Su, Xiuqin1,3 | |
刊名 | OPTICS LETTERS |
2022-09-15 | |
卷号 | 47期号:18页码:4680-4683 |
ISSN号 | 0146-9592;1539-4794 |
DOI | 10.1364/OL.469719 |
产权排序 | 1 |
英文摘要 | Non-line-of-sight (NLoS) imaging reveals a hidden scene using indirect diffuse reflections. A common choice for ana-lyzing the time-of-flight (ToF) data from a non-confocal system is an ellipsoid model whose operator is high -dimensional, leading to a computationally arduous task. In this Letter, the product-convolution expansions method is utilized to formulate the operator and its adjoint based on the observation of a shift-variant point spread function (PSF) in the ToF data. The operator and its adjoint are locally approximated as a convolution, which allows the for-ward and backward procedure to be computed efficiently through fast Fourier transform (FFT). Moreover, the low -rank approximation of the operator is obtained by matrix decompositions, further improving the computational effi-ciency. The proposed method is validated using publicly accessible datasets. (c) 2022 Optica Publishing Group |
语种 | 英语 |
出版者 | Optica Publishing Group |
WOS记录号 | WOS:000863686200008 |
内容类型 | 期刊论文 |
源URL | [http://ir.opt.ac.cn/handle/181661/96182] |
专题 | 西安光学精密机械研究所_光电测量技术实验室 |
通讯作者 | Su, Xiuqin |
作者单位 | 1.Pilot Natl Lab Marine Sci & Technol, Qingdao 266237, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Xian Inst Opt & Precis Mech, Key Lab Space Precis Measurement Technol, Xian 710119, Peoples R China |
推荐引用方式 GB/T 7714 | Xu, Weihao,Chen, Songmao,Tian, Yuyuan,et al. Fast non-line-of-sight imaging based on product-convolution expansions[J]. OPTICS LETTERS,2022,47(18):4680-4683. |
APA | Xu, Weihao,Chen, Songmao,Tian, Yuyuan,Wang, Dingjie,&Su, Xiuqin.(2022).Fast non-line-of-sight imaging based on product-convolution expansions.OPTICS LETTERS,47(18),4680-4683. |
MLA | Xu, Weihao,et al."Fast non-line-of-sight imaging based on product-convolution expansions".OPTICS LETTERS 47.18(2022):4680-4683. |
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