arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2311.16618cs.CV

跨层重叠窗口注意力用于伪装目标检测

Cross-level Attention with Overlapped Windows for Camouflaged Object Detection

Jiepan Li, Fangxiao Lu, Nan Xue, Zhuohong Li, Hongyan Zhang, Wei He

AI总结:

针对伪装目标检测中低层特征增强不足的问题,提出重叠窗口跨层注意力机制OWinCA,利用高层语义引导增强低层特征,并在三个大规模数据集上超越现有最先进方法。

摘要:

伪装目标会自适应地将其颜色和纹理与环境相匹配,这使得它们与周围环境难以区分。现有方法表明,高层语义特征能够突出伪装目标与背景之间的差异。因此,它们将高层语义特征与低层细节特征相结合,以实现准确的伪装目标检测(COD)。与以往的多层特征融合设计不同,我们认为增强低层特征对于COD更为迫切。在本文中,我们提出了一种重叠窗口跨层注意力(OWinCA)机制,以在最高层特征的引导下实现低层特征增强。通过在最高层和低层特征图上滑动对齐的窗口对,高层语义通过跨层注意力被显式地整合到低层细节中。此外,它采用重叠窗口划分策略来缓解窗口间的不连贯性,从而防止全局信息的丢失。这些措施使得所提出的OWinCA能够通过提升伪装目标的可分离性来增强低层特征。相应的OWinCANet通过简单的卷积操作融合这些增强的多层特征,以实现最终的COD。在三个大规模COD数据集上进行的实验表明,我们的OWinCANet显著超越了当前最先进的COD方法。

英文摘要:

Camouflaged objects adaptively fit their color and texture with the environment, which makes them indistinguishable from the surroundings. Current methods revealed that high-level semantic features can highlight the differences between camouflaged objects and the backgrounds. Consequently, they integrate high-level semantic features with low-level detailed features for accurate camouflaged object detection (COD). Unlike previous designs for multi-level feature fusion, we state that enhancing low-level features is more impending for COD. In this paper, we propose an overlapped window cross-level attention (OWinCA) to achieve the low-level feature enhancement guided by the highest-level features. By sliding an aligned window pair on both the highest- and low-level feature maps, the high-level semantics are explicitly integrated into the low-level details via cross-level attention. Additionally, it employs an overlapped window partition strategy to alleviate the incoherence among windows, which prevents the loss of global information. These adoptions enable the proposed OWinCA to enhance low-level features by promoting the separability of camouflaged objects. The associated proposed OWinCANet fuses these enhanced multi-level features by simple convolution operation to achieve the final COD. Experiments conducted on three large-scale COD datasets demonstrate that our OWinCANet significantly surpasses the current state-of-the-art COD methods.

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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