Hyperspectral image reconstruction using multi-colour and time-multiplexed LED illumination

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dc.contributor.authorTschannerl, Julius
dc.contributor.authorRen, Jinchang
dc.contributor.authorZhao, Huimin
dc.contributor.authorKao, Fu-Jen
dc.contributor.authorMarshall, Stephen
dc.contributor.authorYuen, Peter W. T.
dc.date.accessioned2019-06-06T11:42:51Z
dc.date.available2019-06-06T11:42:51Z
dc.date.issued2019-05-06
dc.description.abstractThe rapidly rising industrial interest in hyperspectral imaging (HSI) has generated an increased demand for cost effective HSI devices. We are demonstrating a mobile and low-cost multispectral imaging system, enabled by time-multiplexed RGB Light Emitting Diodes (LED) illumination, which operates at video framerate. Critically, a deep Multi-Layer Perceptron (MLP) with HSI prior in the spectral range of 400–950 nm is trained to reconstruct HSI data. We incorporate regularisation and dropout to compensate for overfitting in the largely ill-posed problem of reconstructing the HSI data. The MLP is characterised by a relatively simple design and low computational burden. Experimental results on 51 objects of various references and naturally occurring materials show the effectiveness of this approach in terms of reconstruction error and classification accuracy. We were also able to show that utilising additional colour channels to the three R, G and B channels adds increased value to the reconstruction.en_UK
dc.identifier.citationTschannerl J, Ren J, Zhao H, et al., (2019) Hyperspectral image reconstruction using multi-colour and time-multiplexed LED illumination. Optics and Lasers in Engineering, Volume 121, October 2019, pp. 352-357en_UK
dc.identifier.cris23453697
dc.identifier.issn0143-8166
dc.identifier.urihttps://doi.org/10.1016/j.optlaseng.2019.04.014
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/14227
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectHyperspectral imaging (HSI)en_UK
dc.subjectDeep learningen_UK
dc.subjectSpectral reconstructionen_UK
dc.subjectLED illuminationen_UK
dc.titleHyperspectral image reconstruction using multi-colour and time-multiplexed LED illuminationen_UK
dc.typeArticleen_UK

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