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Corrections to spectral restoration of Hadamard coding spectral imager
Hu, Bingliang1; Tang, Xingjia1,2; Li, Libo1; Zhang, Geng1; Wang, Shuang1; Yang, Ying1
Department光谱成像技术研究室
Source PublicationSPECTROSCOPY LETTERS
ISSN0038-7010;1532-2289
Contribution Rank1
Abstract

Hadamard coding spectral imaging technology is a computational spectral imaging technology that modulates the target's spectral information and recovers the original spectrum by the inverse transformation. Compared with the dispersive spectrometer, this system has the advantage of better signal-to-noise ratio coming from multi-channel detection under low illumination. However, the coding process of this system is inevitability affected by several errors, including the misalignment of the coding template and the detector, scanning error, bad pixels, and so on. These errors would have an impact on the accuracy of the calculated spectrum. In this paper, we propose a unitive spectral reconstruction model under different errors and design an integrated approach to correct the above-mentioned errors simultaneously, including the bad pixel's correction method with window function smoothing, the coding matrix's correction method by using corrected template matrix to reconstruct coding matrix, and the push-scanning offset's correction method including the inversion of line offset correction and column offset compensation, which could achieve better performance with the increase of spatial dimension. Experimental results on synthesized data and prototype tests show that the proposed correction method is effective in both single noise case and multiple noises condition, it is more accurate than traditional corrections in which only data preprocessing is finished.

KeywordError correction Hadamard encoding spectral imaging spectral restoration
DOI10.1080/00387010.2020.1834409
Indexed BySCI
Language英语
WOS IDWOS:000583462800001
PublisherTAYLOR & FRANCIS INC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.opt.ac.cn/handle/181661/93779
Collection光谱成像技术研究室
Corresponding AuthorTang, Xingjia
Affiliation1.Chinese Acad Sci, Xian Inst Opt & Precis Mech, 17 Informat Ave, Xian, Shaanxi, Peoples R China
2.Xi An Jiao Tong Univ, Sch Math & Stat, Xian, Peoples R China
Recommended Citation
GB/T 7714
Hu, Bingliang,Tang, Xingjia,Li, Libo,et al. Corrections to spectral restoration of Hadamard coding spectral imager[J]. SPECTROSCOPY LETTERS.
APA Hu, Bingliang,Tang, Xingjia,Li, Libo,Zhang, Geng,Wang, Shuang,&Yang, Ying.
MLA Hu, Bingliang,et al."Corrections to spectral restoration of Hadamard coding spectral imager".SPECTROSCOPY LETTERS
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