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• W3207955519 abstract "Timely and accurate rice distribution information is needed to ensure the sustainable development of food production and food security. With its unique advantages, synthetic aperture radar (SAR) can monitor the rice distribution in tropical and subtropical areas under any type of weather condition. This study proposes an accurate rice extraction and mapping framework that can solve the issues of low sample production efficiency and fragmented rice plots when prior information on rice distribution is insufficient. The experiment was carried out using multitemporal Sentinel-1A Data in Zhanjiang, China. First, the temporal characteristic map was used for the visualization of rice distribution to improve the efficiency of rice sample production. Second, rice classification was carried out based on the BiLSTM-Attention model, which focuses on learning the key information of rice and non-rice in the backscattering coefficient curve and gives different types of attention to rice and non-rice features. Finally, the rice classification results were optimized based on the high-precision global land cover classification map. The experimental results showed that the classification accuracy of the proposed framework on the test dataset was 0.9351, the kappa coefficient was 0.8703, and the extracted plots maintained good integrity. Compared with the statistical data, the consistency reached 94.6%. Therefore, the framework proposed in this study can be used to extract rice distribution information accurately and efficiently." @default.
• W3207955519 created "2021-10-25" @default.
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• W3207955519 date "2021-10-09" @default.
• W3207955519 modified "2023-10-07" @default.
• W3207955519 title "Rice Mapping Using a BiLSTM-Attention Model from Multitemporal Sentinel-1 Data" @default.
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• W3207955519 doi "https://doi.org/10.3390/agriculture11100977" @default.
• W3207955519 hasPublicationYear "2021" @default.
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