Compressive optical spectrometry based on sequency-ordered Hadamard transform

Compressive optical spectrometry based on sequency-ordered Hadamard transform

We propose a compressive Hadamard transform spectrometer (CHTS) based on the energy compaction trait of the sequency-ordered Hadamard matrix (SOHM), in which the spectrum is reconstructed from compressed measurements using simple matrix multiplication. The evaluation of a 128-channel CHTS on the mea...

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Bibliographic Details
Main Authors: Zhang, Yi, Kang, Jian, Hsieh, Chao-Mao, Liu, Quan
Other Authors: School of Chemical and Biomedical Engineering
Format: Article
Language:English
Published: 2021
Subjects:
Engineering::Chemical engineering
Optical Spectrometry
Sequency-ordered Hadamard Matrix
Online Access:https://hdl.handle.net/10356/148793
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Institution: Nanyang Technological University
Language: English
Description
Summary:We propose a compressive Hadamard transform spectrometer (CHTS) based on the energy compaction trait of the sequency-ordered Hadamard matrix (SOHM), in which the spectrum is reconstructed from compressed measurements using simple matrix multiplication. The evaluation of a 128-channel CHTS on the measurements of a fluorescence spectrum demonstrates compression ratios up to 8:1, with a relative root mean square error of around 3%.

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