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arXiv 2509.04757cs.CVcs.AI

MCANet:一种用于基于无人机影像的多标签飓风后损毁评估的多尺度类别特定注意力网络

MCANet: A Multi-Scale Class-Specific Attention Network for Multi-Label Post-Hurricane Damage Assessment Using UAV Imagery

Georgia Institute of Technology(佐治亚理工学院);The University of Sydney(悉尼大学)

Zhangding Liu, Neda Mohammadi, John E. Taylor

AI总结:

针对飓风后无人机影像多标签损毁评估中多尺度与类别共现难题,提出MCANet框架,集成Res2Net主干与类别特定残差注意力,在RescueNet上以91.37% mAP超越ViT-B/16,且参数和计算量大幅降低。

摘要:

飓风对建筑物、道路及其他基础设施造成广泛破坏,使得及时的灾后损毁评估对于应急响应和恢复规划至关重要。无人机(UAV)影像提供了受灾区域的高分辨率观测,但飓风后场景难以分类,因为同一图像中常同时出现多种损毁类别,这些类别出现在不同的空间尺度上,并包含视觉上相似的严重程度以及罕见但操作上重要的类别。为应对这些挑战,本研究提出了MCANet,一种用于飓风后无人机损毁评估的多标签分类框架。MCANet集成了基于Res2Net的主干网络以进行多尺度表示,并结合类别特定的残差注意力,分别针对每个损毁类别聚合空间证据。在RescueNet数据集(包含飓风迈克尔后收集的4,494张无人机图像,并标注了10个损毁类别)上的评估表明,MCANet在所评估模型中取得了最高的平均精度均值(mAP),达到91.37%。与视觉变换器(ViT-B/16)相比,MCANet在mAP上提高了1.90个百分点,同时使用的参数减少了约50%,十亿浮点运算次数(GFLOPs)减少了52%。类别特定的残差注意力相较于类别无关注意力(CA)带来了1.52个百分点的mAP提升;仅Res2Net主干网络就在尺度异质或代表性不足的类别(如道路阻塞和泳池)上产生了集中增益。单头配置取得了最高的总体mAP,而双头配置为道路阻塞和建筑物重大损毁提供了针对性增益。MCANet支持快速的灾后图像筛查,并为下游应急管理工作流程提供结构化输出。

英文摘要:

Hurricanes cause widespread damage to buildings, roads, and other infrastructure, making timely post-disaster damage assessment critical for emergency response and recovery planning. Unmanned aerial vehicle (UAV) imagery provides high-resolution observations of affected areas, but post-hurricane scenes are difficult to classify because multiple damage categories often co-occur within the same image, appear at different spatial scales, and include visually similar severity levels as well as rare but operationally important classes. To address these challenges, this study presents MCANet, a multi-label classification framework for post-hurricane UAV damage assessment. MCANet integrates a Res2Net-based backbone for multi-scale representation with class-specific residual attention to aggregate spatial evidence separately for each damage category. Evaluation on the RescueNet dataset, which includes 4,494 UAV images collected after Hurricane Michael and annotated with 10 damage categories, shows that MCANet achieves the highest mean average precision (mAP) among the evaluated models, with an mAP of 91.37%. Compared with Vision Transformer (ViT-B/16), MCANet improves mAP by 1.90 percentage points while using approximately 50% fewer parameters and 52% fewer giga floating-point operations (GFLOPs). Class-specific residual attention contributed an mAP increase of 1.52 percentage points over class-agnostic attention (CA); the Res2Net backbone alone produced concentrated gains on scale-heterogeneous or underrepresented classes such as Road Blocked and Pool. The single-head configuration achieved the highest overall mAP, whereas the two-head configuration provided targeted gains for Road Blocked and Building Major Damage. MCANet supports rapid post-disaster image screening and provides structured outputs for downstream emergency-management workflows.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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