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Proceedings Paper

Development of a multichannel hyperspectral imaging probe for food property and quality assessment
Author(s): Yuping Huang; Renfu Lu; Kunjie Chen
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Paper Abstract

This paper reports on the development, calibration and evaluation of a new multipurpose, multichannel hyperspectral imaging probe for property and quality assessment of food products. The new multichannel probe consists of a 910 μm fiber as a point light source and 30 light receiving fibers of three sizes (i.e., 50 μm, 105 μm and 200 μm) arranged in a special pattern to enhance signal acquisitions over the spatial distances of up to 36 mm. The multichannel probe allows simultaneous acquisition of 30 spatially-resolved reflectance spectra of food samples with either flat or curved surface over the spectral region of 550-1,650 nm. The measured reflectance spectra can be used for estimating the optical scattering and absorption properties of food samples, as well as for assessing the tissues of the samples at different depths. Several calibration procedures that are unique to this probe were carried out; they included linearity calibrations for each channel of the hyperspectral imaging system to ensure consistent linear responses of individual channels, and spectral response calibrations of individual channels for each fiber size group and between the three groups of different size fibers. Finally, applications of this new multichannel probe were demonstrated through the optical property measurement of liquid model samples and tomatoes of different maturity levels. The multichannel probe offers new capabilities for optical property measurement and quality detection of food and agricultural products.

Paper Details

Date Published: 1 May 2017
PDF: 18 pages
Proc. SPIE 10217, Sensing for Agriculture and Food Quality and Safety IX, 102170L (1 May 2017); doi: 10.1117/12.2262622
Show Author Affiliations
Yuping Huang, Nanjing Agricultural Univ. (China)
Michigan State Univ. (United States)
Renfu Lu, Agricultural Research Service (United States)
Michigan State Univ. (United States)
Kunjie Chen, Nanjing Agricultural Univ. (China)

Published in SPIE Proceedings Vol. 10217:
Sensing for Agriculture and Food Quality and Safety IX
Moon S. Kim; Kuanglin Chao; Bryan A. Chin; Byoung-Kwan Cho, Editor(s)

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