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Proceedings Paper

Nondestructive evaluation of soluble solid content in strawberry by near infrared spectroscopy
Author(s): Zhiming Guo; Wenqian Huang; Liping Chen; Xiu Wang; Yankun Peng
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Paper Abstract

This paper indicates the feasibility to use near infrared (NIR) spectroscopy combined with synergy interval partial least squares (siPLS) algorithms as a rapid nondestructive method to estimate the soluble solid content (SSC) in strawberry. Spectral preprocessing methods were optimized selected by cross-validation in the model calibration. Partial least squares (PLS) algorithm was conducted on the calibration of regression model. The performance of the final model was back-evaluated according to root mean square error of calibration (RMSEC) and correlation coefficient (R2 c) in calibration set, and tested by mean square error of prediction (RMSEP) and correlation coefficient (R2 p) in prediction set. The optimal siPLS model was obtained with after first derivation spectra preprocessing. The measurement results of best model were achieved as follow: RMSEC = 0.2259, R2 c = 0.9590 in the calibration set; and RMSEP = 0.2892, R2 p = 0.9390 in the prediction set. This work demonstrated that NIR spectroscopy and siPLS with efficient spectral preprocessing is a useful tool for nondestructively evaluation SSC in strawberry.

Paper Details

Date Published: 4 March 2013
PDF: 5 pages
Proc. SPIE 8761, PIAGENG 2013: Image Processing and Photonics for Agricultural Engineering, 87610O (4 March 2013); doi: 10.1117/12.2019628
Show Author Affiliations
Zhiming Guo, National Engineering Ctr. of Intelligent Equipment for Agriculture (China)
China Agricultural Univ. (China)
Wenqian Huang, National Engineering Ctr. of Intelligent Equipment for Agriculture (China)
Beijing Institute of Technology (China)
Liping Chen, National Engineering Ctr. of Intelligent Equipment for Agriculture (China)
Xiu Wang, National Engineering Ctr. of Intelligent Equipment for Agriculture (China)
Yankun Peng, China Agricultural Univ. (China)


Published in SPIE Proceedings Vol. 8761:
PIAGENG 2013: Image Processing and Photonics for Agricultural Engineering
Honghua Tan, Editor(s)

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