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Proceedings Paper

A portable Vis-NIR spectrometer to determine soluble solids content in Gannan navel orange by LS-SVM and EWs selection
Author(s): Yande Liu; Yuanyuan Pan M.D.; Aiguo Ouyang; Xudong Sun; Hailiang Zhang
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Paper Abstract

The objective of this paper was to determine soluble solids content (SSC) of intact Gannan navel orange by a portable near-infrared (NIR) spectrometer with the optical fiber in the wavelength range of 551~950nm. The effective wavelength regions (EWs) were chosen from the spectra pro-processed by second derivative by interval partial least square (iPLS) and backward interval partial least square (Bipls). Then the partial least square (PLS) and least square support vector machine (LS-SVM) models were developed with EWs. 60 unknown samples were used to evaluate the performance of them. The LS-SVM model was better than others with EWs chosen by Bilps. The correlation coefficient (R) and root mean square error of prediction (RMSEP) for LS-SVM (Bipls) were 0.86 and 0.55°Brix. The results showed that the portable NIR combination with LS-SVM was a feasible method to determine SSC of intact Gannan navel orange nondestructively.

Paper Details

Date Published: 28 October 2009
PDF: 7 pages
Proc. SPIE 7519, Eighth International Conference on Photonics and Imaging in Biology and Medicine (PIBM 2009), 751906 (28 October 2009); doi: 10.1117/12.843362
Show Author Affiliations
Yande Liu, East China Jiaotong Univ. (China)
Yuanyuan Pan M.D., East China Jiaotong Univ. (China)
Aiguo Ouyang, East China Jiaotong Univ. (China)
Xudong Sun, East China Jiaotong Univ. (China)
Hailiang Zhang, East China Jiaotong Univ. (China)

Published in SPIE Proceedings Vol. 7519:
Eighth International Conference on Photonics and Imaging in Biology and Medicine (PIBM 2009)
Qingming Luo; Lihong V. Wang; Valery V. Tuchin; Pengcheng Li; Ling Fu, Editor(s)

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