Yuanyuan LIU, Yu SUN, Xuebing GAO, Libin WANG, Yueyong WANG, Mengqi LIU, Shuran CUI. Establishment and optimization of aerial multispectral field straw mulch quantity inversion model[J]. Optics and Precision Engineering, 2024, 32(11): 1773
- Optics and Precision Engineering
- Vol. 32, Issue 11, 1773 (2024)
Fig. 1. Overview of research area
Fig. 2. Experimental process for determination of staw mulch quantity
Fig. 3. UAV route planning and multi-spectral camera whiteboard calibration
Fig. 4. Calculation process of GA-PSO hybrid algorithm
Fig. 5. Correlation coefficients between multi-spectral variables and straw mulch quantity in different periods
Fig. 6. Scatter plot of measured versus and predicted values for different data
Fig. 7. Comparison of different evolutionary curves
Fig. 8. Scatter plot of measured versus and predicted values for optimized model
Fig. 9. Comparison of corn straw mulch quantity estimates at sampling sites
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Table 1. Spectral index and its formula
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Table 2. Description of modeling set and validation set
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Table 3. Correlation coefficients between multi-spectral variables and straw mulch quantity in different study areas
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Table 4. Machine learning models based on different sets of variables
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Table 5. Estimation of straw mulch quantity in study area
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