用深度学习实现实时野火检测,兼顾精度与计算效率。
PyroFocus: A Deep Learning Approach to Real-Time Wildfire Detection in Multispectral Remote Sensing Imagery
- 分两阶段处理:先分类后估强度,降低推理开销。
- 在MASTER数据集上实现高精度分类与低延迟推理。
- 适合未来机载/星载实时野火监测系统部署。
快速准确的野火检测对应急响应和环境管理至关重要。在航空与航天任务中,实时算法需区分无火、有火及火后状态,并估算火势强度。多光谱与超光谱热成像仪提供丰富光谱信息,但高维数据与有限星上资源使实时处理面临挑战。随着野火频发且加剧,低延迟、低功耗的星上检测方法需求迫切。本文系统评估了多种深度学习架构,包括定制卷积神经网络(CNN)与基于Transformer的模型,用于多类别火情分类。同时提出PyroFocus,一种两阶段流水线:先进行火情分类,再执行火辐射功率(FRP)回归或分割,以降低推断时间和计算成本,适用于星上部署。基于与下一代火情探测传感器相似的NASA MASTER数据集,对比了准确率、推断延迟与资源效率。实验结果表明,该两阶段方案在速度与精度间取得良好权衡,展现出未来野火监测任务中实时边缘部署的巨大潜力。
原文摘要 · Abstract (English)
Rapid and accurate wildfire detection is crucial for emergency response and environmental management. In airborne and spaceborne missions, real-time algorithms must distinguish between no fire, active fire, and post-fire conditions, and estimate fire intensity. Multispectral and hyperspectral thermal imagers provide rich spectral information, but high data dimensionality and limited onboard resources make real-time processing challenging. As wildfires increase in frequency and severity, the need for low-latency and computationally efficient onboard detection methods is critical. We present a systematic evaluation of multiple deep learning architectures, including custom Convolutional Neural Networks (CNNs) and Transformer-based models, for multi-class fire classification. We also introduce PyroFocus, a two-stage pipeline that performs fire classification followed by fire radiative power (FRP) regression or segmentation to reduce inference time and computational cost for onboard deployment. Using data from NASA's MODIS/ASTER Airborne Simulator (MASTER), which is similar to a next-generation fire detection sensor, we compare accuracy, inference latency, and resource efficiency. Experimental results show that the proposed two-stage pipeline achieves strong trade-offs between speed and accuracy, demonstrating significant potential for real-time edge deployment in future wildfire monitoring missions.
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