旋转式高光谱扫描仪及相关图像重建算法。

Luo Longqiang, Li Shuo, Yao Xinli, He Sailing

College of Optical Science and Engineering, Zhejiang University, 866 Yuhangtang Rd, Hangzhou, 310058, China.

Ningbo Research Institute, Zhejiang University, Ningbo, 315100, China.

Sci Rep. 2021 Feb 8;11(1):3296. doi: 10.1038/s41598-021-82819-8.

We design and implement a compact and lightweight hyperspectral scanner. Based on this, a novel rotational hyperspectral scanner was demonstrated. Different from translational scanning, rotational scanning is a moveless and stable scanning method. We also designed a relevant image algorithm to reconstruct the image from an angular recorded hyperspectral data cube. The algorithm works well even with uncertain radial and tangential offset, which is caused by mechanical misalignment. The system shown a spectral resolution of 5 nm after calibration. Finally, spatial accuracy and spectral precision were discussed, based on some additional experiments.

我们设计并实现了一种紧凑且轻便的高光谱扫描仪。基于此，展示了一种新型旋转高光谱扫描仪。与平移扫描不同，旋转扫描是一种无移动且稳定的扫描方法。我们还设计了一种相关的图像算法，用于从角度记录的高光谱数据立方体重建图像。即使存在由机械不对准引起的不确定径向和切向偏移，该算法也能很好地工作。校准后，该系统显示出5纳米的光谱分辨率。最后，基于一些额外的实验，讨论了空间精度和光谱精度。