Column coded scanning aperture hyperspectral imaging system

Yingchao Shi, Xingchen Xiao, Geng Tong, Luming Zhang, Fei Chen, Wei Zhang, Yiting Yu

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The line scanning hyperspectral imaging system (LS-HIS), which relies on a mechanical slit or spatial light modulation device for single channel spatial scanning, is widely used in various fields such as biomedical imaging and remote sensing. However, in scenes that require low light illumination, a decrease in luminous flux will increase exposure time, leading to a significant decrease in scanning efficiency and signal-to-noise ratio (SNR). To address this issue, we present a flexible column coded scanning aperture hyperspectral imaging system (CCSA-HIS) using a spatial light modulator digital micromirror device (DMD). By introducing the concept of multiplex and constructing a multiplexing encoding matrix, we form a one-dimensional multi-column coded scanning aperture, which greatly improves scanning efficiency. Experimental comparisons demonstrate that this approach achieves higher SNR and equivalent spatial and spectral resolution in significantly less sampling time compared to LS-HIS. In short, our scheme provides a new imaging technology for the field of hyperspectral imaging with good theoretical value and engineering significance.

Original languageEnglish
Pages (from-to)37229-37240
Number of pages12
JournalOptics Express
Volume31
Issue number22
DOIs
StatePublished - 23 Oct 2023

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