Shu-xiang FAN, Qing-yan WANG, Yu-sen YANG, Jiang-bo LI, Chi ZHANG, Xi TIAN, Wen-qian HUANG. Development and Experiment of a Handheld Visible/Near Infrared Device for Nondestructive Determination of Fruit Sugar Content[J]. Spectroscopy and Spectral Analysis, 2021, 41(10): 3058
- Spectroscopy and Spectral Analysis
- Vol. 41, Issue 10, 3058 (2021)
Fig. 1. Image of the developed handheld visible/near infrared device for detecting fruit sugar content
Fig. 2. The transmittance spectra after preprocessing methods
(a): Apple; (b): Peach
(a): Apple; (b): Peach
Fig. 3. Scatter plots of predicted vs . measured sugar content
(a): Apple; (b): Peach
(a): Apple; (b): Peach
Fig. 4. Variation of Rp obtained by piecewise direct standardization (PDS) algorithm with different numbers of transfer samples and different window sizes
(a): Apple; (b): Peach
(a): Apple; (b): Peach
Fig. 5. Variation of R p and RMSEP obtained by CCA algorithm with different numbers of transfer samples
(a): Apple; (b): Peach
(a): Apple; (b): Peach
Fig. 6. Scatter plots of predicted vs. measured sugar content
(a): Apple; (b): Peach
(a): Apple; (b): Peach
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Table 1. Statistics of fruit sugar content measurement
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