Proposes CSR task and HalluSegBench using visual counterfactuals to diagnose segmentation hallucinations in VLMs, plus RobustSeg via counterfactual fine-tuning that reduces hallucinations by 30% on FP-RefCOCO.
OFA: Unifying Architectures, Tasks, and Modalities Through a Simple Sequence-to-Sequence Learning Framework
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Counterfactual Segmentation Reasoning: Diagnosing and Mitigating Pixel-Grounding Hallucination
Proposes CSR task and HalluSegBench using visual counterfactuals to diagnose segmentation hallucinations in VLMs, plus RobustSeg via counterfactual fine-tuning that reduces hallucinations by 30% on FP-RefCOCO.