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Exploring Hallucination of Large Multimodal Models in Video Understanding: Benchmark, Analysis and Mitigation

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arxiv 2503.19622 v1 pith:CRAHHTUF submitted 2025-03-25 cs.CV

Exploring Hallucination of Large Multimodal Models in Video Understanding: Benchmark, Analysis and Mitigation

classification cs.CV
keywords hallucinationlmmshallucinationsbenchmarkmodelmodelsreasoningvideo
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The hallucination of large multimodal models (LMMs), providing responses that appear correct but are actually incorrect, limits their reliability and applicability. This paper aims to study the hallucination problem of LMMs in video modality, which is dynamic and more challenging compared to static modalities like images and text. From this motivation, we first present a comprehensive benchmark termed HAVEN for evaluating hallucinations of LMMs in video understanding tasks. It is built upon three dimensions, i.e., hallucination causes, hallucination aspects, and question formats, resulting in 6K questions. Then, we quantitatively study 7 influential factors on hallucinations, e.g., duration time of videos, model sizes, and model reasoning, via experiments of 16 LMMs on the presented benchmark. In addition, inspired by recent thinking models like OpenAI o1, we propose a video-thinking model to mitigate the hallucinations of LMMs via supervised reasoning fine-tuning (SRFT) and direct preference optimization (TDPO)-- where SRFT enhances reasoning capabilities while TDPO reduces hallucinations in the thinking process. Extensive experiments and analyses demonstrate the effectiveness. Remarkably, it improves the baseline by 7.65% in accuracy on hallucination evaluation and reduces the bias score by 4.5%. The code and data are public at https://github.com/Hongcheng-Gao/HAVEN.

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Cited by 9 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

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    VLMs hallucinate by prioritizing contradictory on-screen text over visual content, addressed via the VisualTextTrap benchmark with 6,057 human-validated samples and the VTHM-MoE dual-encoder framework using dimension-...

  2. No Place to Hide: Benchmarking Video Hallucination with Background-Controlled Pairs

    cs.CV 2026-06 unverdicted novelty 7.0

    Introduces VidPair-Halluc benchmark of 1K background-controlled adversarial video pairs and 11K QA pairs generated via PairFlow pipeline to evaluate hallucination in LVMs.

  3. DAIN: Dynamic Agent-Based Interaction Network for Efficient and Collaborative Multimodal Reasoning

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    DAIN reframes multimodal fusion as dynamic agent collaboration with sparse activation, claiming SOTA results including 2.6% accuracy gain on ADNI across five benchmarks.

  4. MotionHalluc: Diagnosing Kinematic Hallucinations in Fine-Grained Motion Reasoning

    cs.CV 2026-06 unverdicted novelty 6.0

    New benchmark diagnoses directional, attributional, and temporal hallucinations in multimodal motion comparison models and demonstrates gains from explicit measurement verification.

  5. Relaxing Anchor-Frame Dominance for Mitigating Hallucinations in Video Large Language Models

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    A learned residual disruptor creates hallucination-prone negative video features, and subtracting their logits during decoding reduces hallucination in two 7B video LLMs.

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