双通道快照式计算光谱偏振成像方法研究  

Dual Channel Snapshot Computation Spectral Polarization Imaging Method

作　　者：刘彦丽[1,2] 赵海博 于晓杰[1,2] 王业超 钟晓明 薛芳 徐婧[1,2] 张丽莎 Liu Yanli;Zhao Haibo;Yu Xiaojie;Wang Yechao;Zhong Xiaoming;Xue Fang;Xu Jing;Zhang lisha(Beijing Institute of Space Mechanics&Electricity,Beijing 100094,China;Key Laboratory for Advanced Optical Remote Sensing Technology of Beijing,Beijing 100094,China)

机构地区：[1]北京空间机电研究所,北京100094 [2]先进光学遥感技术北京市重点实验室,北京100094

出　　处：《激光与光电子学进展》2020年第14期361-365,共5页Laser & Optoelectronics Progress

基　　金：北京市科技计划课题(Z181100003018003);科技部重点研发计划课题(2016YFB0500501)。

摘　　要：针对传统光谱偏振成像需要动态调制、光通量低和光谱分辨率有限等问题,提出了基于计算光谱成像和像素级偏振探测的成像新方法,以双通道形式单次成像获取目标高分辨率的空间、光谱和偏振信息。搭建了编码孔径光谱偏振成像通道和偏振成像通道的双路实验装置,得到了450~650 nm范围内25个波段在4种偏振态下的光谱数据立方体,以及每个波段的偏振度和偏振角。所提方法的光谱分辨率优于10 nm,光谱重构精度约为86.3%,相对单路成像方法,光谱重构精度提升了10.5个百分点。ing at the problems that traditional spectral polarization imaging technology requires dynamic modulation,low luminous flux and limited spectral resolution,a new imaging method based on computational spectral imaging technology and pixel-level polarization detection is proposed.The dual-channel format is used for obtaining high-resolution spatial,spectral,and polarization target information through single imaging.Further,a dual-channel experimental device with a coded-aperture spectral polarization imaging channel and a polarization imaging channel is established to obtain spectral data cubes with four polarization states in 25 bands in the range of 450-650 nm,as well as the polarization degree and polarization angle of each band.The spectral resolution of proposed method is better than 10 nm,and the spectral reconstruction accuracy is approximately 86.3%.Furthermore,the spectral reconstruction accuracy is observed to improve by 10.5 percentage points when compared with that of the single-channel imaging method.

关 键 词：图像处理 计算光谱成像 像素级偏振探测器 快照式 多维信息 

分 类 号：P185.14[天文地球—天文学]