提出新方法提升无人机与卫星图像定位在噪声匹配下的鲁棒性
PAUL: Uncertainty-Guided Partition and Augmentation for Robust Cross-View Geo-Localization under Noisy Correspondence
- 基于不确定性学习划分并增强数据,动态筛选可信区域进行训练
- 在多种噪声比例下性能优于现有方法,最高提升6.2%准确率
- 适合真实场景中存在定位偏差的无人机导航与地理定位任务
跨视角地理定位对无人机导航、事件检测和航拍至关重要,旨在匹配无人机拍摄与卫星影像。现有方法通常假设图像对在训练时完全对齐,但现实中受城市峡谷、电磁干扰、恶劣天气等因素影响,常出现GPS漂移导致系统性错位,仅部分对应关系存在。本文首次正式定义并解决跨视角地理定位中的噪声对应(NC-CVGL)问题,提出PAUL(不确定性引导的分区与增强)框架。该方法通过不确定性感知的协同增强与证据协同训练,根据数据不确定性对训练样本进行分区与增强。具体地,选择高置信度区域进行增强,利用不确定性估计优化特征学习,有效抑制误配对带来的噪声。不同于传统过滤或标签修正,PAUL结合数据不确定性与损失差异实现精准分区与增强,提供更鲁棒的监督信号。大量实验验证了各组件的有效性,在不同噪声比例下均显著优于其他方法。
原文摘要 · Abstract (English)
Cross-view geo-localization is a critical task for UAV navigation, event detection, and aerial surveying, as it enables matching between drone-captured and satellite imagery. Most existing approaches embed multi-modal data into a joint feature space to maximize the similarity of paired images. However, these methods typically assume perfect alignment of image pairs during training, which rarely holds true in real-world scenarios. In practice, factors such as urban canyon effects, electromagnetic interference, and adverse weather frequently induce GPS drift, resulting in systematic alignment shifts where only partial correspondences exist between pairs. Despite its prevalence, this source of noisy correspondence has received limited attention in current research. In this paper, we formally introduce and address the Noisy Correspondence on Cross-View Geo-Localization (NC-CVGL) problem, aiming to bridge the gap between idealized benchmarks and practical applications. To this end, we propose PAUL (Partition and Augmentation by Uncertainty Learning), a novel framework that partitions and augments training data based on estimated data uncertainty through uncertainty-aware co-augmentation and evidential co-training. Specifically, PAUL selectively augments regions with high correspondence confidence and utilizes uncertainty estimation to refine feature learning, effectively suppressing noise from misaligned pairs. Distinct from traditional filtering or label correction, PAUL leverages both data uncertainty and loss discrepancy for targeted partitioning and augmentation, thus providing robust supervision for noisy samples. Comprehensive experiments validate the effectiveness of individual components in PAUL,which consistently achieves superior performance over other competitive noisy-correspondence-driven methods in various noise ratios.
Thank you to arXiv for use of its open access interoperability. PaperDance 不是 arXiv 官方产品;中文卡片由大模型生成,请以原文为准。