Remote Sensing Technology and Application, Volume. 39, Issue 3, 741(2024)
Dynamic Monitoring of Water Area in Dongting Lake during Flood Season based on Sentinel-1A SAR Data
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Fig. 2. Temporal distribution and number of Sentinel images used in this study for flood season between 2016 and 2021
Fig. 7. Detail comparison of water extraction results by different methods
Fig. 8. Statistics of water area during the flood season of Dongting Lake from 2016 to 2019
Fig. 9. Surface water dynamic variation of Dongting Lake during the flood season in 2020
Fig. 10. Inundation frequency Distribution of Dongting Lake during the flood season from 2016 to 2021
Table 1.
Optimal parameter settings and accuracy for UNet and HRNet in the training process View tableView in ArticleTable 1.
Optimal parameter settings and accuracy for UNet and HRNet in the training process 学习率 批尺寸 训练周期 训练集精度 验证集精度 UNet网络模型 2 30 0.993 7 0.992 6 HRNet网络模型 8 50 0.991 3 0.991 0
Table 2.
Evaluation of the accuracy of water extraction methods View tableView in ArticleTable 2.
Evaluation of the accuracy of water extraction methods 水体提取方法 评价指标 Precision Recall F1 MRate MIou SDWI指数法 0.987 8 0.930 3 0.958 2 0.008 4 0.955 3 面向对象分类法 0.934 5 0.977 0 0.955 3 0.009 5 0.951 9 UNet网络模型 0.987 7 0.935 8 0.961 0 0.007 9 0.958 1 HRNet网络模型 0.974 6 0.948 8 0.961 6 0.007 8 0.958 6
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Yulin ZHANG, Changbo JIANG, Yuannan LONG, Shixiong YAN. Dynamic Monitoring of Water Area in Dongting Lake during Flood Season based on Sentinel-1A SAR Data[J]. Remote Sensing Technology and Application, 2024, 39(3): 741
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Received: Oct. 9, 2022
Accepted: --
Published Online: Dec. 9, 2024
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