Fourier Multispectral Imaging: Measuring Spectra, One Sinusoid at a Time

Hirakawa, Keigo

doi:10.1007/978-3-319-56010-6_1

Cited by 1 publication

(1 citation statement)

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“…The Fourier transform of the interferogram is then used to obtain the target spectrum. [ 4 ] Binary optical lenses are also employed for dispersion, [ 5,6 ] while filters are an optical thin‐film technology that is one of the most common dispersion methods. [ 7 ] Dispersive types provide high accuracy but poor imaging quality, while filtering types offer relatively high imaging quality and suffer from inconsistencies in image overlap.…”

Section: Introductionmentioning

confidence: 99%

Snapshot Multispectral Light‐Field Imaging Based on Nematic Liquid‐Crystal Microlens Array via Deep Learning

Li,

Chen

et al. 2023

Adv Eng Mater

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In this study, we have developed a multispectral light field imaging system using nematic liquid crystal microlens arrays (LC‐MLAs). The system solves the spectral under‐sampling and complex system issues in existing light field and spectral cameras. The LC‐MLA is the core optical element of the snapshot imaging system. No dispersion or customized scanning machinery is required to obtain multispectral light fields. Deep learning technology is utilized to reconstruct spectral information from raw data. Experiments demonstrate that the proposed method efficiently reconstructs multispectral data with 10nm accuracy in the visible wavelength range of [400nm, 700nm]. The system offers high precision, simple equipment, and relatively low cost without additional dispersion and filtering devices.This article is protected by copyright. All rights reserved.

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Section: Introductionmentioning

confidence: 99%