The application of convolutional neural networks for tomographic reconstruction of hyperspectral images

Wei Chih Huang*, Mads Svanborg Peters, Mads Juul Ahlebæk, Mads Toudal Frandsen, René Lynge Eriksen, Bjarke Jørgensen

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

A novel method, utilizing convolutional neural networks (CNNs), is proposed to reconstruct hyperspectral cubes from computed tomography imaging spectrometer (CTIS) images. Current reconstruction algorithms are usually subject to long reconstruction times and mediocre precision in cases of a large number of spectral channels. The constructed CNNs deliver higher precision and shorter reconstruction time than a sparse expectation maximization algorithm. In addition, the network can handle two different types of real-world images at the same time—specifically ColorChecker and carrot spectral images are considered. This work paves the way toward real-time reconstruction of hyperspectral cubes from CTIS images.

Original languageEnglish
Article number102218
JournalDisplays
Volume74
ISSN0141-9382
DOIs
Publication statusPublished - Sept 2022

Keywords

  • Computed tomography imaging spectrometer (CTIS) images
  • Convolutional neural networks
  • Hyperspectral cubes reconstruction

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