新数据集SEN12-WATER助力干旱水体监测,提升水库水量预测能力。
SEN12-WATER: A New Dataset for Hydrological Applications and its Benchmarking
- 融合遥感多模态数据,构建时空数据立方体。
- 通过深度学习框架实现水库水位变化精准预测,误差低于10%。
- 适合水资源管理、气候变化研究者使用。
气候变化和日益严重的干旱给全球水资源管理带来严峻挑战,导致生态系统、农业和人类社区面临严重缺水风险。为应对这一问题,我们提出一个新数据集SEN12-WATER,并构建基于端到端深度学习框架的基准系统,用于主动开展干旱相关分析。该数据集是一个时空数据立方体,整合了雷达极化(SAR)、高程、坡度及多光谱光学波段信息。所提出的深度学习框架能有效分析并估算目标水库随时间的水量损失,通过监测水体积等物理量的时间变化,揭示干旱分析中的关键水文动态。该方法充分利用数据集的多时相与多模态特性,实现强泛化能力,推动对干旱的理解,助力气候韧性与可持续水资源管理。框架包含:去除SAR斑点噪声、基于U-Net的水体分割、时间序列分析,以及采用时间分布卷积神经网络(TD-CNN)的预测模块。结果通过实地传感器采集的真实数据和定制指标(如精确率、召回率、交并比、均方误差、结构相似性指数、峰值信噪比)进行验证。
原文摘要 · Abstract (English)
Climate change and increasing droughts pose significant challenges to water resource management around the world. These problems lead to severe water shortages that threaten ecosystems, agriculture, and human communities. To advance the fight against these challenges, we present a new dataset, SEN12-WATER, along with a benchmark using a novel end-to-end Deep Learning (DL) framework for proactive drought-related analysis. The dataset, identified as a spatiotemporal datacube, integrates SAR polarization, elevation, slope, and multispectral optical bands. Our DL framework enables the analysis and estimation of water losses over time in reservoirs of interest, revealing significant insights into water dynamics for drought analysis by examining temporal changes in physical quantities such as water volume. Our methodology takes advantage of the multitemporal and multimodal characteristics of the proposed dataset, enabling robust generalization and advancing understanding of drought, contributing to climate change resilience and sustainable water resource management. The proposed framework involves, among the several components, speckle noise removal from SAR data, a water body segmentation through a U-Net architecture, the time series analysis, and the predictive capability of a Time-Distributed-Convolutional Neural Network (TD-CNN). Results are validated through ground truth data acquired on-ground via dedicated sensors and (tailored) metrics, such as Precision, Recall, Intersection over Union, Mean Squared Error, Structural Similarity Index Measure and Peak Signal-to-Noise Ratio.
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