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Hallucinations in vision-language models (VLMs) hinder reliability and real-world applicability, usually stemming from distribution shifts between pretraining data and test samples. Existing solutions, such as retraining or fine-tuning on…

Multimedia · Computer Science 2025-06-10 Fei Zhao , Chengcui Zhang , Runlin Zhang , Tianyang Wang , Xi Li

Large Vision-Language Models (LVLMs) demonstrate impressive capabilities in generating detailed and coherent responses from visual inputs. However, they are prone to generate hallucinations due to an over-reliance on language priors. To…

Artificial Intelligence · Computer Science 2025-02-20 Kyungmin Min , Minbeom Kim , Kang-il Lee , Dongryeol Lee , Kyomin Jung

Vision-Language Models (VLMs) are frequently undermined by object hallucination--generating content that contradicts visual reality--due to an over-reliance on linguistic priors. We introduce Positive-and-Negative Decoding (PND), a…

Computer Vision and Pattern Recognition · Computer Science 2026-04-28 Yubo Jiang , Xin Yang , Abudukelimu Wuerkaixi , Zheming Yuan , Xuxin Cheng , Fengying Xie , Zhiguo Jiang , Cao Liu , Ke Zeng , Haopeng Zhang

Large Vision-Language Models (LVLMs) have achieved substantial progress in cross-modal tasks. However, due to language bias, LVLMs are susceptible to object hallucination, which can be primarily divided into category, attribute, and…

Computer Vision and Pattern Recognition · Computer Science 2026-03-12 Tianbo Wang , Yuqing Ma , Kewei Liao , Zhange Zhang , Simin Li , Jinyang Guo , Xianglong Liu

Vision-Language Models (VLMs) excel at visual understanding but often suffer from visual hallucinations, where they generate descriptions of nonexistent objects, actions, or concepts, posing significant risks in safety-critical…

Computer Vision and Pattern Recognition · Computer Science 2025-10-21 Tsung-Han Wu , Heekyung Lee , Jiaxin Ge , Joseph E. Gonzalez , Trevor Darrell , David M. Chan

Multimodal Large Language Models (MLLMs) excel in numerous vision-language tasks yet suffer from hallucinations, producing content inconsistent with input visuals, that undermine reliability in precision-sensitive domains. This issue stems…

Computer Vision and Pattern Recognition · Computer Science 2025-12-04 Nan Sun , Zhenyu Zhang , Xixun Lin , Kun Wang , Yanmin Shang , Naibin Gu , Shuohuan Wang , Yu Sun , Hua Wu , Haifeng Wang , Yanan Cao

Despite achieving outstanding performance on various cross-modal tasks, current large vision-language models (LVLMs) still suffer from hallucination issues, manifesting as inconsistencies between their generated responses and the…

Computer Vision and Pattern Recognition · Computer Science 2025-06-05 Rui Hu , Yahan Tu , Shuyu Wei , Dongyuan Lu , Jitao Sang

Due to the unidirectional masking mechanism, Decoder-Only models propagate information from left to right. LVLMs (Large Vision-Language Models) follow the same architecture, with visual information gradually integrated into semantic…

Computer Vision and Pattern Recognition · Computer Science 2025-09-24 Jianfei Zhao , Feng Zhang , Xin Sun , Chong Feng

While Multimodal Large Language Models (MLLMs) have achieved remarkable success across diverse tasks, their practical deployment is severely hindered by hallucination issues, which become particularly acute during Reinforcement Learning…

Computer Vision and Pattern Recognition · Computer Science 2026-01-14 Miao Pan , Wangjie Gan , Jintao Chen , Wenqi Zhang , Bing Sun , Jianwei Yin , Xuhong Zhang

Large Multimodal Models (LMMs) have achieved impressive progress in visual perception and reasoning. However, when confronted with visually ambiguous or non-semantic scene text, they often struggle to accurately spot and understand the…

Computer Vision and Pattern Recognition · Computer Science 2025-10-08 Yan Shu , Hangui Lin , Yexin Liu , Yan Zhang , Gangyan Zeng , Yan Li , Yu Zhou , Ser-Nam Lim , Harry Yang , Nicu Sebe

The increasing use of vision-language models (VLMs) in healthcare applications presents great challenges related to hallucinations, in which the models may generate seemingly plausible results that are in fact incorrect. Such hallucinations…

Artificial Intelligence · Computer Science 2025-03-03 Qiao Yan , Yuchen Yuan , Xiaowei Hu , Yihan Wang , Jiaqi Xu , Jinpeng Li , Chi-Wing Fu , Pheng-Ann Heng

Multimodal Large Language Models (MLLMs) have unlocked powerful cross-modal capabilities, but still significantly suffer from hallucinations. As such, accurate detection of hallucinations in MLLMs is imperative for ensuring their…

Computation and Language · Computer Science 2025-11-18 Pinxue Guo , Chongruo Wu , Xinyu Zhou , Lingyi Hong , Zhaoyu Chen , Jinglun Li , Kaixun Jiang , Sen-ching Samson Cheung , Wei Zhang , Wenqiang Zhang

Large vision-language models (LVLMs) frequently suffer from Object Hallucination (OH), wherein they generate descriptions containing objects that are not actually present in the input image. This phenomenon is particularly problematic in…

Computer Vision and Pattern Recognition · Computer Science 2026-04-22 Yanbin Huang , Yisen Li , Guiyao Tie , Xiaoye Qu , Pan Zhou , Hongfei Wang , Zhaofan Zou , Hao Sun , Xuelong Li

Despite the impressive capabilities of Large Vision-Language Models (LVLMs), they remain susceptible to hallucinations-generating content that is inconsistent with the input image. Existing training-free hallucination mitigation methods…

Machine Learning · Computer Science 2025-05-20 Kai Tang , Jinhao You , Xiuqi Ge , Hanze Li , Yichen Guo , Xiande Huang

Despite their impressive capabilities, multimodal large language models (MLLMs) are prone to hallucinations, i.e., the generated content that is nonsensical or unfaithful to input sources. Unlike in LLMs, hallucinations in MLLMs often stem…

Computer Vision and Pattern Recognition · Computer Science 2025-05-09 Xin Zou , Yizhou Wang , Yibo Yan , Yuanhuiyi Lyu , Kening Zheng , Sirui Huang , Junkai Chen , Peijie Jiang , Jia Liu , Chang Tang , Xuming Hu

Large Language Models (LLMs) have transformed natural language processing (NLP) tasks, but they suffer from hallucination, generating plausible yet factually incorrect content. This issue extends to Video-Language Models (VideoLLMs), where…

Computer Vision and Pattern Recognition · Computer Science 2025-04-22 Ahmad Khalil , Mahmoud Khalil , Alioune Ngom

Large Vision-Language Models (VLMs) often exhibit text inertia, where attention drifts from visual evidence toward linguistic priors, resulting in object hallucinations. Existing decoding strategies intervene only at the output logits and…

Computer Vision and Pattern Recognition · Computer Science 2025-12-08 Weijue Bu , Guan Yuan , Guixian Zhang

The emergence of large language models (LLMs) is a milestone in generative artificial intelligence, achieving significant success in text comprehension and generation tasks. Despite the tremendous success of LLMs in many downstream tasks,…

Computation and Language · Computer Science 2024-07-16 He Li , Haoang Chi , Mingyu Liu , Wenjing Yang

Hallucination is a common issue in Multimodal Large Language Models (MLLMs), yet the underlying principles remain poorly understood. In this paper, we investigate which components of MLLMs contribute to object hallucinations. To analyze…

Computer Vision and Pattern Recognition · Computer Science 2024-09-04 Yueqian Wang , Jianxin Liang , Yuxuan Wang , Huishuai Zhang , Dongyan Zhao

Despite their impressive performance across a wide range of tasks, Large Vision-Language Models (LVLMs) remain prone to hallucination. In this study, we propose a comprehensive intervention framework aligned with the transformer's causal…

Computer Vision and Pattern Recognition · Computer Science 2026-01-07 Jiaye Qian , Ge Zheng , Yuchen Zhu , Sibei Yang