Wen XIAO, Ying-li CAO, Shuai FENG, Ya-di LIU, Kai-lun JIANG, Zheng-xin YU, Li YAN. Detection of Rice Sheath Blight Disease Index Based on Split-Window Gram-Schmidt Transformation and PSO-SVR Algorithm[J]. Spectroscopy and Spectral Analysis, 2021, 41(7): 2181
- Spectroscopy and Spectral Analysis
- Vol. 41, Issue 7, 2181 (2021)
Fig. 1. Distribution of 20 rice plots
Fig. 2. The original spectral reflectance curves of rice under the condition of three degrees of rice sheath blight
(a): Low altitude remote sensing canopy; (b): Ground canopy
(a): Low altitude remote sensing canopy; (b): Ground canopy
Fig. 3. First-order derivative spectral reflectance curves of rice under the condition of three degrees of rice sheath blight
(a): Low altitude remote sensing canopy; (b): Ground canopy
(a): Low altitude remote sensing canopy; (b): Ground canopy
Fig. 4. Inverse-log spectral reflectance curves of rice under the condition of three degrees of rice sheath blight
(a): Low altitude remote sensing canopy; (b): Ground canopy
(a): Low altitude remote sensing canopy; (b): Ground canopy
Fig. 5. Main base and characteristic wavelength based on window dividing Gram-Schmidt transform
(a): IRS of the low altitude remote sensing canopy; (b): FDRS of the ground canopy
(a): IRS of the low altitude remote sensing canopy; (b): FDRS of the ground canopy
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Table 1. The result of regression modeling with support vector machine
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