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The rapid development of Multi-modality Large Language Models (MLLMs) has significantly influenced various aspects of industry and daily life, showcasing impressive capabilities in visual perception and understanding. However, these models…

Computer Vision and Pattern Recognition · Computer Science 2024-09-17 Yinan Sun , Zicheng Zhang , Haoning Wu , Xiaohong Liu , Weisi Lin , Guangtao Zhai , Xiongkuo Min

Large Vision-Language Models (LVLMs) exhibit outstanding performance on vision-language tasks but struggle with hallucination problems. Through in-depth analysis of LVLM activation patterns, we reveal two key findings: 1) truthfulness and…

Computer Vision and Pattern Recognition · Computer Science 2026-02-26 Jianghao Yin , Qin Chen , Kedi Chen , Jie Zhou , Xingjiao Wu , Liang He

Like a body at rest that stays at rest, we find that visual attention in multimodal large language models (MLLMs) exhibits pronounced inertia, remaining largely static once settled during early decoding steps and failing to support the…

Computer Vision and Pattern Recognition · Computer Science 2026-04-06 Boyang Gong , Yu Zheng , Fanye Kong , Jie Zhou , Jiwen Lu

Vision-Language Models (VLMs) have demonstrated remarkable progress in multimodal tasks, but remain susceptible to hallucinations, where generated text deviates from the underlying visual content. Existing hallucination detection methods…

Computer Vision and Pattern Recognition · Computer Science 2026-04-20 Feiran Zhang , Yixin Wu , Zhenghua Wang , Xiaohua Wang , Changze Lv , Xuanjing Huang , Xiaoqing Zheng

Multimodal Large Language Models (MLLMs) have garnered significant attention recently and demonstrate outstanding capabilities in various tasks such as OCR, VQA, captioning, $\textit{etc}$. However, hallucination remains a persistent issue.…

Computer Vision and Pattern Recognition · Computer Science 2025-12-23 Zehao Wang , Xinpeng Liu , Yudonglin Zhang , Xiaoqian Wu , Zhou Fang , Yifan Fang , Junfu Pu , Cewu Lu , Yong-Lu Li

Hallucinations in large language models (LLMs) refer to the phenomenon of LLMs producing responses that are coherent yet factually inaccurate. This issue undermines the effectiveness of LLMs in practical applications, necessitating research…

Computation and Language · Computer Science 2024-06-11 Weihang Su , Changyue Wang , Qingyao Ai , Yiran HU , Zhijing Wu , Yujia Zhou , Yiqun Liu

Hallucinations remain a persistent challenge for vision-language models (VLMs), which often describe nonexistent objects or fabricate facts. Existing detection methods typically operate after text generation, making intervention both costly…

Computer Vision and Pattern Recognition · Computer Science 2026-03-06 Sai Akhil Kogilathota , Sripadha Vallabha E G , Luzhe Sun , Jiawei Zhou

Large Vision-Language Models (LVLMs) are increasingly adept at generating contextually detailed and coherent responses from visual inputs. However, their application in multimodal decision-making and open-ended generation is hindered by a…

Computer Vision and Pattern Recognition · Computer Science 2024-06-06 Xintong Wang , Jingheng Pan , Liang Ding , Chris Biemann

Recent advancements in Large Vision-Language Models (LVLMs) have significantly expanded their utility in tasks like image captioning and visual question answering. However, they still struggle with object hallucination, where models…

Computer Vision and Pattern Recognition · Computer Science 2025-05-26 Yeongjae Cho , Keonwoo Kim , Taebaek Hwang , Sungzoon Cho

While multi-modal large language models (MLLMs) have made significant progress in recent years, the issue of hallucinations remains a major challenge. To mitigate this phenomenon, existing solutions either introduce additional data for…

Computer Vision and Pattern Recognition · Computer Science 2025-10-23 Fengyuan Sun , Hui Chen , Xinhao Xu , Dandan Zheng , Jingdong Chen , Jun Zhou , Jungong Han , Guiguang Ding

Vision Language Models (VLMs) have achieved impressive progress in multimodal reasoning; yet, they remain vulnerable to hallucinations, where outputs are not grounded in visual evidence. In this paper, we investigate a previously overlooked…

Computer Vision and Pattern Recognition · Computer Science 2025-10-15 Sifan Li , Hongkai Chen , Yujun Cai , Qingwen Ye , Liyang Chen , Junsong Yuan , Yiwei Wang

Multimodal Large Language Models (MLLMs) have achieved impressive advances, yet object hallucination remains a persistent challenge. Existing methods, based on the flawed assumption that omission and fabrication hallucinations share a…

Computer Vision and Pattern Recognition · Computer Science 2025-09-03 Guangzong Si , Hao Yin , Xianfei Li , Qing Ding , Wenlong Liao , Tao He , Pai Peng

Large Vision-Language Models (LVLMs) have demonstrated impressive multimodal abilities but remain prone to multilingual object hallucination, with a higher likelihood of generating responses inconsistent with the visual input when utilizing…

Computation and Language · Computer Science 2025-06-16 Zekai Ye , Qiming Li , Xiaocheng Feng , Libo Qin , Yichong Huang , Baohang Li , Kui Jiang , Yang Xiang , Zhirui Zhang , Yunfei Lu , Duyu Tang , Dandan Tu , Bing Qin

Large Language Models (LLMs) are increasingly deployed in safety-critical domains, yet remain susceptible to hallucinations. While prior works have proposed confidence representation methods for hallucination detection, most of these…

Machine Learning · Computer Science 2025-11-17 Elyes Hajji , Aymen Bouguerra , Fabio Arnez

Recent advancements in multimodal large language models (MLLMs) have shown unprecedented capabilities in advancing various vision-language tasks. However, MLLMs face significant challenges with hallucinations, and misleading outputs that do…

Computer Vision and Pattern Recognition · Computer Science 2024-12-24 Shengqiong Wu , Hao Fei , Liangming Pan , William Yang Wang , Shuicheng Yan , Tat-Seng Chua

Given the higher information load processed by large vision-language models (LVLMs) compared to single-modal LLMs, detecting LVLM hallucinations requires more human and time expense, and thus rise a wider safety concerns. In this paper, we…

Computer Vision and Pattern Recognition · Computer Science 2024-12-03 Ruiyang Zhang , Hu Zhang , Zhedong Zheng

We study object hallucination in Multimodal Large Language Models (MLLMs) and improve visual contrastive decoding (VCD) by constructing an object-aligned auxiliary view. We leverage object-centric attention in self-supervised Vision…

Computer Vision and Pattern Recognition · Computer Science 2026-02-13 Boqi Chen , Xudong Liu , Jianing Qiu

Large Vision-Language Models (LVLMs) have shown significant capability in vision-language understanding. However, one critical issue that persists in these models is sycophancy, where models are unduly influenced by leading or deceptive…

Artificial Intelligence · Computer Science 2025-10-24 Yunpu Zhao , Rui Zhang , Junbin Xiao , Changxin Ke , Ruibo Hou , Yifan Hao , Ling Li

Large Visual Language Models (LVLMs) integrate visual and linguistic modalities, exhibiting exceptional performance across various multimodal tasks. Nevertheless, LVLMs remain vulnerable to the issue of object hallucinations. Previous…

Computer Vision and Pattern Recognition · Computer Science 2025-02-04 Chao Wang , Xuancheng Zhou , Weiwei Fu , Yang Zhou

Large Vision-Language Models (LVLMs) frequently suffer from severe hallucination issues. Existing mitigation strategies predominantly rely on isolated, single-step states to enhance visual focus or suppress strong linguistic priors.…

Computer Vision and Pattern Recognition · Computer Science 2026-04-02 Bei Yan , Yuecong Min , Jie Zhang , Shiguang Shan , Xilin Chen