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Multimodal Large Language Models (MLLMs) excel in vision-language tasks such as image captioning but remain prone to object hallucinations, where they describe objects that do not appear in the image. To mitigate this, we propose LISA, a…

Computer Vision and Pattern Recognition · Computer Science 2025-11-14 Zhihui Guo , Xin Man , Hui Xu , Jie Shao , Zhiguo Jiang , Xianchao Zhang , Heng Tao Shen

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

Large vision-language models (LVLMs) have made significant progress in recent years. While LVLMs exhibit excellent ability in language understanding, question answering, and conversations of visual inputs, they are prone to producing…

Computation and Language · Computer Science 2024-11-20 Qing Li , Jiahui Geng , Chenyang Lyu , Derui Zhu , Maxim Panov , Fakhri Karray

Large vision-language models (LVLMs) suffer from hallucination a lot, generating responses that apparently contradict to the image content occasionally. The key problem lies in its weak ability to comprehend detailed content in a…

Computer Vision and Pattern Recognition · Computer Science 2023-11-29 Zhiyang Chen , Yousong Zhu , Yufei Zhan , Zhaowen Li , Chaoyang Zhao , Jinqiao Wang , Ming Tang

Multimodal Large Language Models (MLLMs) have emerged as a central focus in both industry and academia, but often suffer from biases introduced by visual and language priors, which can lead to multimodal hallucination. These biases arise…

Computer Vision and Pattern Recognition · Computer Science 2025-02-19 Guanyu Zhou , Yibo Yan , Xin Zou , Kun Wang , Aiwei Liu , Xuming Hu

Recent development of Large Vision-Language Models (LVLMs) has attracted growing attention within the AI landscape for its practical implementation potential. However, ``hallucination'', or more specifically, the misalignment between…

Computer Vision and Pattern Recognition · Computer Science 2024-05-07 Hanchao Liu , Wenyuan Xue , Yifei Chen , Dapeng Chen , Xiutian Zhao , Ke Wang , Liping Hou , Rongjun Li , Wei Peng

Large Vision Language Models (LVLMs) have achieved significant progress in integrating visual and textual inputs for multimodal reasoning. However, a recurring challenge is ensuring these models utilize visual information as effectively as…

Computer Vision and Pattern Recognition · Computer Science 2025-03-20 Estelle Aflalo , Gabriela Ben Melech Stan , Tiep Le , Man Luo , Shachar Rosenman , Sayak Paul , Shao-Yen Tseng , Vasudev Lal

Multimodal large language models (MLLMs) frequently hallucinate by over-committing to spurious visual cues. Prior remedies-Visual and Instruction Contrastive Decoding (VCD, ICD)-mitigate this issue, yet the mechanism remains opaque. We…

Computer Vision and Pattern Recognition · Computer Science 2025-10-21 Yujun Wang , Aniri , Jinhe Bi , Soeren Pirk , Yunpu Ma

Large Vision-Language Models (LVLMs) have achieved impressive progress in multimodal reasoning, yet they remain prone to object hallucinations, generating descriptions of objects that are not present in the input image. Recent approaches…

Computer Vision and Pattern Recognition · Computer Science 2026-04-07 Sohyeon Kim , Sang Yeon Yoon , Kyeongbo Kong

Large Vision-Language Models (LVLMs) have demonstrated impressive multimodal understanding capabilities, yet they remain prone to object hallucination, where models describe non-existent objects or attribute incorrect factual information,…

Computer Vision and Pattern Recognition · Computer Science 2026-02-24 Ahmed Akl , Abdelwahed Khamis , Ali Cheraghian , Zhe Wang , Sara Khalifa , Kewen Wang

Although large vision-language models (LVLMs) have demonstrated remarkable capabilities, they are prone to hallucinations in multi-image tasks. We attribute this issue to limitations in existing attention mechanisms and insufficient…

Computer Vision and Pattern Recognition · Computer Science 2026-03-10 Xiaochen Yang , Hao Fang , Jiawei Kong , Yaoxin Mao , Bin Chen , Shu-Tao Xia

Multimodal Diffusion Large Language Models (MDLLMs) achieve high-concurrency generation through parallel masked decoding, yet the architectures remain prone to multimodal hallucinations. This structural vulnerability stems from an…

Computer Vision and Pattern Recognition · Computer Science 2026-03-27 Vishal Narnaware , Animesh Gupta , Kevin Zhai , Zhenyi Wang , Mubarak Shah

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

Hallucination has been a significant impediment to the development and application of current Large Vision-Language Models (LVLMs). To mitigate hallucinations, one intuitive and effective way is to directly increase attention weights to…

Computer Vision and Pattern Recognition · Computer Science 2026-03-06 Li'an Zhong , Ziqiang He , Jibin Zheng , Jin Li , Z. Jane Wang , Xiangui Kang

Large Vision-Language Models (LVLMs) have recently achieved remarkable success. However, LVLMs are still plagued by the hallucination problem, which limits the practicality in many scenarios. Hallucination refers to the information of…

Machine Learning · Computer Science 2023-10-11 Junyang Wang , Yiyang Zhou , Guohai Xu , Pengcheng Shi , Chenlin Zhao , Haiyang Xu , Qinghao Ye , Ming Yan , Ji Zhang , Jihua Zhu , Jitao Sang , Haoyu Tang

Large Vision-Language Models (LVLMs) can reason effectively over both textual and visual inputs, but they tend to hallucinate syntactically coherent yet visually ungrounded contents. In this paper, we investigate the internal dynamics of…

Computer Vision and Pattern Recognition · Computer Science 2025-07-02 Zhuowei Li , Haizhou Shi , Yunhe Gao , Di Liu , Zhenting Wang , Yuxiao Chen , Ting Liu , Long Zhao , Hao Wang , Dimitris N. Metaxas

Object hallucination remains a primary obstacle to the reliable deployment of Multimodal Large Language Models (MLLMs). Current inference-time mitigation methods mainly assume hallucinations stem from visual neglect, steering models to…

Computation and Language · Computer Science 2026-05-28 Jingwen Wu , Xijun Zhang , Ge Song

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

Despite their remarkable capabilities, Large Language Models (LLMs) are prone to generate responses that contradict verifiable facts, i.e., unfaithful hallucination content. Existing efforts generally focus on optimizing model parameters or…

Computation and Language · Computer Science 2025-01-28 Dingkang Yang , Dongling Xiao , Jinjie Wei , Mingcheng Li , Zhaoyu Chen , Ke Li , Lihua Zhang

Vision language models (VLMs) often generate hallucination, i.e., content that cannot be substantiated by either textual or visual inputs. Prior work primarily attributes this to over-reliance on linguistic prior knowledge rather than…

Computer Vision and Pattern Recognition · Computer Science 2025-11-11 Zheng Qi , Chao Shang , Evangelia Spiliopoulou , Nikolaos Pappas