Author

Hendrik P. A. Lensch

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Preprint Oct 2026

When Trackers Fail: VLM-Guided Verification and Recovery for Robust Video Object Segmentation

Recent trackers built on foundation models such as the Segment Anything Model (SAM) achieve strong performance by propagating object masks through memory. However, this strength is also a key source of failure: under occlusion, reappearance, or distractors, an incorrect prediction can enter the tracking loop and be pro...

Valay Bundele, Susmit Agrawal, Mehran Hosseinzadeh et al. · 1 citation

Preprint Sep 2026

Learning Where to Focus: Self-Supervised Multi-Scale ViTs for Histopathology

CRAFT (Coarse-to-fine Region-Adaptive Feature Tokenization), a DINO-based framework that learns image-dependent mixed-scale representations by using self-supervised attention to selectively refine informative regions while preserving coarse context, together with a symmetric cross-scale regularization objective that en...

Anabel Stammer, Valay Bundele, Mehran Hosseinzadeh et al. · 0 citations