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WALDO: One-Shot Exemplar-Conditioned Object Detection in Cluttered Scenes

arXiv · AI, language, vision and robotics · article · Aug 28, 2026 · UTC

Locating a specific object instance in a cluttered scene using a single reference image and a short description, and reporting when that instance is absent, large vision-language models usually address this task. We ask whether the same capability is available far more cheaply, from representations already learned by a world-model pretraining objective. We present WALDO, a one-shot exemplar- and language-conditioned detection head with 3.4M trainable parameters that reads frozen V-JEPA 2.1 features to jointly predict object localization and target presence, with no gradient on the backbone. Be

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