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Hyperspectral imaging of intact bell peppers
Year:
2014
Source of publication :
Biosystems Engineering
Authors :
Alchanatis, Victor
;
.
Gatker, Janna
;
.
Ignat, Timea
;
.
Ostrovsky, Viacheslav
;
.
Schmilovitch, Ze'ev
;
.
Volume :
117
Co-Authors:
Schmilovitch, Z., Institute of Agricultural Engineering ARO, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Ignat, T., Institute of Agricultural Engineering ARO, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Alchanatis, V., Institute of Agricultural Engineering ARO, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Gatker, J., Institute of Agricultural Engineering ARO, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Ostrovsky, V., Institute of Agricultural Engineering ARO, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Felföldi, J., Department of Physics-Control, Corvinus University of Budapest, Somlói 14-16, Budapest 1118, Hungary
Facilitators :
From page:
83
To page:
93
(
Total pages:
11
)
Abstract:
Agricultural engineering technologies have successfully addressed certain challenges by the use of advanced sensors and machine vision technologies. The objective of this study was to develop a non-destructive method to evaluate and to map quality indices in bell pepper. Three cultivars of bell pepper ('Ever Green', 'No. 117' and 'Celica') were studied during maturation by using hyperspectral imaging in the visible and near-infrared (550-850nm) region. Peppers were marked in the flowering stage and 20 samples from each variety were collected weekly, along a growing period of seven weeks, until full growth. Quality parameters like total soluble solids, total chlorophyll, carotenoid and ascorbic acid content were determined and correlated with the spectral data. Images of intact peppers were collected by an acousto-optic-tuneable-filter (AOTF) hyperspectral charged-coupled-device (CCD) camera, in spectral resolution of 5nm. Spectral information of the hyper cubes was analysed by chemometric procedures. Partial least squares regression was used for model development. Comparisons were made between the PLS regression analysis of the reflectance spectra (R), and the pre-processed spectra such as the first derivative (D1R), log(1/R), D1(log(1/R)) and D2(log(1/R)). Models were established to predict the quality attributes creating the basis for multiple sampling of a particular fruit or individual peppers from many fruits in the same time. High correlations were obtained by the established models with coefficients of determination of 0.95, 0.95, 0.97, and 0.72 for total soluble solids, total chlorophyll, carotenoid and ascorbic acid content, respectively. © 2013 IAgrE.
Note:
Related Files :
Bells
chlorophyll
computer vision
Cultivation
Fruits
regression analysis
spectroscopy
Show More
Related Content
More details
DOI :
10.1016/j.biosystemseng.2013.07.003
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
28967
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:43
Scientific Publication
Hyperspectral imaging of intact bell peppers
117
Schmilovitch, Z., Institute of Agricultural Engineering ARO, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Ignat, T., Institute of Agricultural Engineering ARO, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Alchanatis, V., Institute of Agricultural Engineering ARO, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Gatker, J., Institute of Agricultural Engineering ARO, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Ostrovsky, V., Institute of Agricultural Engineering ARO, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Felföldi, J., Department of Physics-Control, Corvinus University of Budapest, Somlói 14-16, Budapest 1118, Hungary
Hyperspectral imaging of intact bell peppers
Agricultural engineering technologies have successfully addressed certain challenges by the use of advanced sensors and machine vision technologies. The objective of this study was to develop a non-destructive method to evaluate and to map quality indices in bell pepper. Three cultivars of bell pepper ('Ever Green', 'No. 117' and 'Celica') were studied during maturation by using hyperspectral imaging in the visible and near-infrared (550-850nm) region. Peppers were marked in the flowering stage and 20 samples from each variety were collected weekly, along a growing period of seven weeks, until full growth. Quality parameters like total soluble solids, total chlorophyll, carotenoid and ascorbic acid content were determined and correlated with the spectral data. Images of intact peppers were collected by an acousto-optic-tuneable-filter (AOTF) hyperspectral charged-coupled-device (CCD) camera, in spectral resolution of 5nm. Spectral information of the hyper cubes was analysed by chemometric procedures. Partial least squares regression was used for model development. Comparisons were made between the PLS regression analysis of the reflectance spectra (R), and the pre-processed spectra such as the first derivative (D1R), log(1/R), D1(log(1/R)) and D2(log(1/R)). Models were established to predict the quality attributes creating the basis for multiple sampling of a particular fruit or individual peppers from many fruits in the same time. High correlations were obtained by the established models with coefficients of determination of 0.95, 0.95, 0.97, and 0.72 for total soluble solids, total chlorophyll, carotenoid and ascorbic acid content, respectively. © 2013 IAgrE.
Scientific Publication
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