提升视觉定位准确率,通过区域感知与自适应重排序实现高效可靠匹配。
Region Matters: Efficient and Reliable Region-Aware Visual Place Recognition

- 引入可靠性评估分支生成抗遮挡的区域重要性图
- 自适应调整候选集规模,推理速度比FoL快40%
- 无需人工标注,利用聚类生成局部监督信号
视觉位置识别(VPR)通过将查询图像与地理标记数据库匹配来确定其地理位置。现有方法在感知混淆(由无关区域引起)和候选调度僵化导致的低效重排序方面表现不佳。为此,本文提出FoL++,结合鲁棒的判别性区域建模与自适应重排序。具体而言,提出可靠性评估分支生成空间可靠性图,显式建模遮挡鲁棒性;通过两种空间对齐损失(SAL和SCEL)优化特征对齐并突出显著区域。针对弱监督学习,采用伪对应策略直接从聚合簇中生成密集局部特征监督。自适应候选调度器根据全局相似性动态调整候选池大小,通过可靠性加权局部匹配并自适应融合全局与局部证据,显著超越传统独立匹配系统。在七个基准上的大量实验表明,FoL++达到当前最优性能,且内存开销轻量,推理速度比FoL提升40%。代码与模型将发布于https://github.com/chenshunpeng/FoL(已合并)。
原文摘要 · Abstract (English)
Visual Place Recognition (VPR) determines a query image's geographic location by matching it against geotagged databases. However, existing methods struggle with perceptual aliasing caused by irrelevant regions and inefficient re-ranking due to rigid candidate scheduling. To address these issues, we introduce FoL++, a method combining robust discriminative region modeling with adaptive re-ranking. Specifically, we propose a Reliability Estimation Branch to generate spatial reliability maps that explicitly model occlusion resistance. This representation is further optimized by two spatial alignment losses (SAL and SCEL) to effectively align features and highlight salient regions. For weakly supervised learning without manual annotations, a pseudo-correspondence strategy generates dense local feature supervision directly from aggregation clusters. Our Adaptive Candidate Scheduler dynamically resizes candidate pools based on global similarity. By weighting local matches by reliability and adaptively fusing global and local evidence, FoL++ surpasses traditional independent matching systems. Extensive experiments across seven benchmarks demonstrate that FoL++ achieves state-of-the-art performance with a lightweight memory footprint, improving inference speed by 40% over FoL. Code and models will be released (and merged with FoL) at https://github.com/chenshunpeng/FoL.
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