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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
作者部门光谱成像技术研究室
发表期刊SPECTROSCOPY LETTERS
ISSN0038-7010;1532-2289
产权排序1
摘要

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.

关键词Error correction Hadamard encoding spectral imaging spectral restoration
DOI10.1080/00387010.2020.1834409
收录类别SCI
语种英语
WOS记录号WOS:000583462800001
出版者TAYLOR & FRANCIS INC
引用统计
文献类型期刊论文
条目标识符http://ir.opt.ac.cn/handle/181661/93779
专题光谱成像技术研究室
通讯作者Tang, Xingjia
作者单位1.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
推荐引用方式
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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