用新方法让SAM模型精准识别雷达图中的滑坡边界。
WILD-SAM: Phase-Aware Expert Adaptation of SAM for Landslide Detection in Wrapped InSAR Interferograms

- 引入相位感知专家模块,动态适配雷达数据频谱特征。
- 通过小波变换增强高频纹理,生成高精度提示信息。
- 适合地质灾害监测、遥感图像分析的研究者使用。
从缠绕的干涉合成孔径雷达(InSAR)干涉图中直接检测慢速滑坡对高效地质灾害监测至关重要,但严重相位模糊和复杂相干噪声构成根本挑战。尽管分割一切模型(SAM)在分割任务上表现强大,其直接应用于缠绕相位数据时受制于显著的频域偏移,抑制了边界识别所需的高频条纹。为此,本文提出WILD-SAM,一种专为缠绕干涉图滑坡检测设计的参数高效微调框架。该框架在冻结编码器中集成相位感知混合专家(PA-MoE)适配器,以对齐频谱分布;并引入小波引导子带增强(WGSE)策略,生成频率感知密集提示。PA-MoE利用异构卷积专家间的动态路由机制,自适应聚合多尺度频谱-纹理先验,有效缓解自然图像与干涉相位数据之间的分布差异。WGSE则通过离散小波变换显式解耦高频子带,优化方向性相位纹理,将这些结构线索作为密集提示注入,确保滑坡边界拓扑完整性。在ISSLIDE和ISSLIDE+基准上的大量实验表明,WILD-SAM达到当前最优性能,在目标完整性和轮廓保真度上显著超越现有方法。
原文摘要 · Abstract (English)
Detecting slow-moving landslides directly from wrapped Interferometric Synthetic Aperture Radar (InSAR) interferograms is crucial for efficient geohazard monitoring, yet it remains fundamentally challenged by severe phase ambiguity and complex coherence noise. While the Segment Anything Model (SAM) offers a powerful foundation for segmentation, its direct transfer to wrapped phase data is hindered by a profound spectral domain shift, which suppresses the high-frequency fringes essential for boundary delineation. To bridge this gap, we propose WILD-SAM, a novel parameter-efficient fine-tuning framework specifically designed to adapt SAM for high-precision landslide detection on wrapped interferograms. Specifically, the architecture integrates a Phase-Aware Mixture-of-Experts (PA-MoE) Adapter into the frozen encoder to align spectral distributions and introduces a Wavelet-Guided Subband Enhancement (WGSE) strategy to generate frequency-aware dense prompts. The PA-MoE Adapter exploits a dynamic routing mechanism across heterogeneous convolutional experts to adaptively aggregate multi-scale spectral-textural priors, effectively aligning the distribution discrepancy between natural images and interferometric phase data. Meanwhile, the WGSE strategy leverages discrete wavelet transforms to explicitly disentangle high-frequency subbands and refine directional phase textures, injecting these structural cues as dense prompts to ensure topological integrity along sharp landslide boundaries. Extensive experiments on the ISSLIDE and ISSLIDE+ benchmarks demonstrate that WILD-SAM achieves state-of-the-art performance, significantly outperforming existing methods in both target completeness and contour fidelity.
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