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水稻 遥感 制图

同时包含水稻、遥感、制图的农业资讯,共 20 条。

论文AI一手来源

Remote Sensing-Based Mapping of Paddy Rice Cultivation Areas: Progress and Prospects in the Era of Artificial Intelligence

综述2000年以来水稻遥感制图进展,重点评估2016年后人工智能在其中的作用。

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综述指出云污染、作物光谱混淆、跨区域泛化不足等瓶颈,并列出地球观测基础模型、自监督与物理引导学习等优先方向,可作为水稻遥感选题与产品化的路线参考。

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论文Environmental Research Communications一手来源

MAPPING RICE CROPS IN CLOUD-COVERED MOUNTAINOUS AREAS USING SENTINEL-1 RADAR AND RANDOM FOREST ALGORITHM: A CASE STUDY IN LAO CAI, VIETNAM

用Sentinel-1雷达时序与随机森林在越南老街多云山区实现水稻制图。

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该研究在越南老街多云山区用 Sentinel-1 时序 VH 后向散射结合随机森林实现 91.4% 总体精度,水稻面积相对误差 6.8%,其变量筛选思路可迁移至国内西南多云山区水稻监测,但样本与地形条件具地域性。

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论文Smart Agricultural Technology

Diagnosis of Rice Blast Disease Using UAV-Based Multispectral Data: A Comparative Study of Feature Selection Methods

Rice blast is one of the most destructive diseases affecting rice throughout its entire growth cycle, posing serious threats to yield and quality. Timely, accurate, and non-destructive monitoring is therefore crucial for early warning and food security. In this study, rice blast inoculation experiments were conducted in 2019 and 2020 in Wanchang Town, Jilin Province, China. UAV-based multispectral imagery was collected at three key growth stages (booting, heading, and milk stages), and real-time kinematic (RTK) positioning was used to precisely locate ground sampling points where disease observations were recorded simultaneously. Spectral reflectance, vegetation indices, and texture features were extracted; four machine learning algorithms were applied to construct rice blast diagnostic models, and multiple feature selection methods were used to optimize the original high-dimensional feature sets. The main contributions of this study include establishing a multi-source feature system combining spectral, vegetation index, and texture information from multi-stage UAV imagery, proposing three new red edge indices tailored for rice blast detection, and systematically evaluating interactions between machine learning models and feature selection strategies. Results showed that the random forest model based on texture features performed best before feature selection (R 2 = 0.795, RMSE = 0.873). After feature selection, all models improved, with the gradient boosting decision tree model using the selected spectral - texture features achieving the highest accuracy (R 2 = 0.850, RMSE = 0.748). These findings demonstrate that integrating machine learning with appropriate feature selection can significantly enhance rice blast diagnosis and contribute to the development of precision agriculture.

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