Tokyo24/7

anchor

Findings

• IC-215DINOv2's zero-shot attention maps focus on irrelevant foreground objects (vehicles, advertisements) rather than scene structure, degrading its VPR recall on challenging datasets [eval]
• IC-216DINOv2's value (V) facet from self-attention at layer n-1 encodes the most effective local features for VPR re-ranking, outperforming query and key facets, and layer n-1 outperforms the final layer n [eval]
• IC-217AnyLoc's VLAD aggregation, learned unsupervised on the gallery, fails to generalise to out-of-distribution queries with large time gaps or seasonal changes [eval]