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PIER PIER B PIER C PIER M PIER Letters
2022-03-04
Portable 4D Snapshot Hyperspectral Imager for Fastspectral and Surface Morphology Measurements (Invited Paper)
By
Jing Luo,

    Dr. Jing Luo

    College of Optical Science and Engineering

    Zhejiang University

    China

    Homepage

Zijian Lin,

    Mr. Zijian Lin

    College of Optical Science and Engineering

    Zhejiang University

    China

    Homepage

Yuxin Xing,

    Dr. Yuxin Xing

    College of Optical Science and Engineering

    Zhejiang University

    China

    Homepage

Erik Forsberg,

    Dr. Erik Forsberg

    Zhejiang University

    China

    Homepage

Chengdong Wu,

    Dr. Chengdong Wu

    College of Optical Science and Engineering

    Zhejiang University

    China

    Homepage

Xinhua Zhu,

    Dr. Xinhua Zhu

    Taizhou Agility Smart Technologies Co., Ltd

    China

    Homepage

Tingbiao Guo,

    Dr. Tingbiao Guo

    Department of Optical Science and Engineering

    Zhejiang University

    China

    Homepage

Gaoxuan Wang,

    Dr. Gaoxuan Wang

    Ningbo Reasearch Institute

    Zhejiang University

    China

    Homepage

Beilei Bian,

    Dr. Beilei Bian

    Ningbo Electric Power Company, State Grid Corporation

    China

    Homepage

Dun Wu,

    Dr. Dun Wu

    Baolue Technology (Zhejiang) Co., Ltd.

    China

    Homepage

Sailing He

    Prof. Sailing He

    Department of Electromagnetic Theory

    Royal Institute of Technology

    Sweden

    Homepage

Progress In Electromagnetics Research, Vol. 173, 25-36, 2022
doi:10.2528/PIER22021702
Abstract
A portable 4D snapshot hyperspectral imager (P4DS imager) with compact size, fast imaging time, low cost, and simple design is proposed and demonstrated. The key components of the system are a projector, a liquid crystal tunable filter (LCTF), and a camera. It has two operating modes dependent on the set state of the LCTF: a 3D light measurement mode that produces a 3D point cloud reconstruction of the object, and a hyperspectral imaging mode yielding spectral data. The camera imaging plane is the same for both operating modes allowing the collected spatial and spectral data to be directly fused into a 4D data set without post-processing. The P4DS imager has excellent performance with a spectral resolution of 10 nm, a spatial depth accuracy of 55.7 um, and total 4D imaging time of 0.8 s. 4D imaging experiments of three different samples, colored doll statue, green broccoli, and a human face, are presented to demonstrate the efficiency and applicability of the system. Due to being cost-effective, portable, and good imaging performance, the proposed system is suitable for commercialization and mass production.
Citation
Jing Luo, Zijian Lin, Yuxin Xing, Erik Forsberg, Chengdong Wu, Xinhua Zhu, Tingbiao Guo, Gaoxuan Wang, Beilei Bian, Dun Wu, and Sailing He, "Portable 4D Snapshot Hyperspectral Imager for Fastspectral and Surface Morphology Measurements (Invited Paper)," Progress In Electromagnetics Research, Vol. 173, 25-36, 2022.
doi:10.2528/PIER22021702
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