Shortwave infrared hyperspectral imaging for detection of pH value in Fuji apple
文献类型: 外文期刊
第一作者: Guo Zhiming
作者: Guo Zhiming;Huang Wenqian;Chen Liping;Wang Xiu;Guo Zhiming;Peng Yankun;Huang Wenqian;Chen Liping;Wang Xiu
作者机构:
关键词: shortwave infrared hyperspectral imaging;synergy interval partial least squares;pH value;apple
期刊名称:INTERNATIONAL JOURNAL OF AGRICULTURAL AND BIOLOGICAL ENGINEERING ( 影响因子:2.032; 五年影响因子:2.137 )
ISSN: 1934-6344
年卷期: 2014 年 7 卷 2 期
页码:
收录情况: SCI
摘要: pH value is regarded as one of the most important attributes that affect sensory characteristics and edible quality of apple. The objective of the research was to explore the feasibility of applying shortwave infrared hyperspectral imaging system to detect the pH value of apple. A shortwave infrared hyperspectral imaging system was developed over the wavelength region of 1 000-2 500 urn and used to acquire hyperspectral images of apple samples. After reflectance calibration, mean reflectance spectral was calculated by averaging the intensity of all pixels within the roundness region of interest (ROI). Synergy interval partial least squares. (siPLS) algorithms as an effective multivariable method was conducted on the calibration of regression model to estimate the pH value in Fuji apple. The performance of the final model was back-evaluated according to root mean square error of calibration (RMSEC) and correlation coefficient (R-c) in calibration set, and tested in prediction set. The optimal prediction siPLS model was obtained with correlation coefficient (R-p) of 0.8474 and mean square error of prediction (RMSEP) of 0.0398. The results indicated that shortwave infrared hyperspectral imaging combined with siPLS chemometrics could be an accurate and fast method for nondestructive prediction of pH value in Fuji apple.
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