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Multi-modal large language models (MLLMs) have been shown to efficiently integrate natural language with visual information to handle multi-modal tasks. However, MLLMs still face a fundamental limitation of hallucinations, where they tend…

Computer Vision and Pattern Recognition · Computer Science 2024-02-27 Chaoya Jiang , Haiyang Xu , Mengfan Dong , Jiaxing Chen , Wei Ye , Ming Yan , Qinghao Ye , Ji Zhang , Fei Huang , Shikun Zhang

Vision-Language Models (VLMs) have advanced multi-modal tasks like image captioning, visual question answering, and reasoning. However, they often generate hallucinated outputs inconsistent with the visual context or prompt, limiting…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Shawn Li , Jiashu Qu , Yuxiao Zhou , Yuehan Qin , Tiankai Yang , Yue Zhao

Vision-language models (VLMs) increasingly combine visual and textual information to perform complex tasks. However, conflicts between their internal knowledge and external visual input can lead to hallucinations and unreliable predictions.…

Computer Vision and Pattern Recognition · Computer Science 2026-04-21 Francesco Ortu , Zhijing Jin , Diego Doimo , Alberto Cazzaniga

Medical vision-language models (VLMs) show strong performance on radiology tasks but often produce fluent yet weakly grounded conclusions due to over-reliance on a dominant modality. We introduce a context-aligned reasoning framework that…

Computer Vision and Pattern Recognition · Computer Science 2026-04-13 Sumra Khan , Sagar Chhabriya , Aizan Zafar , Sheeraz Arif , Amgad Muneer , Anas Zafar , Shaina Raza , Rizwan Qureshi

Large vision-language models (LVLMs) often hallucinate content that is fluent yet unsupported by the image, limiting their reliability in real-world deployment. We show that a key failure mode arises from route competition: even when visual…

Computer Vision and Pattern Recognition · Computer Science 2026-05-26 Zhe Cheng , Wenyu Chen , Fode Zhang , Dehuan Shen

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 increasingly used as perceptual modules for visual content reasoning, including through captioning and DeepFake detection. In this work, we expose a critical vulnerability of VLMs when exposed to subtle,…

Computer Vision and Pattern Recognition · Computer Science 2025-08-14 Jordan Vice , Naveed Akhtar , Yansong Gao , Richard Hartley , Ajmal Mian

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…

Computer Vision and Pattern Recognition · Computer Science 2025-03-26 Hongcheng Gao , Jiashu Qu , Jingyi Tang , Baolong Bi , Yue Liu , Hongyu Chen , Li Liang , Li Su , Qingming Huang

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

Large Vision Language Models (LVLMs) have recently achieved superior performance in various tasks on natural image and text data, which inspires a large amount of studies for LVLMs fine-tuning and training. Despite their advancements, there…

Computer Vision and Pattern Recognition · Computer Science 2024-07-04 Zishan Gu , Changchang Yin , Fenglin Liu , Ping Zhang

Large Vision-Language Models (LVLMs) have demonstrated impressive capabilities for capturing and reasoning over multimodal inputs. However, these models are prone to parametric knowledge conflicts, which arise from inconsistencies of…

Computer Vision and Pattern Recognition · Computer Science 2024-10-14 Tinghui Zhu , Qin Liu , Fei Wang , Zhengzhong Tu , Muhao Chen

Uncertainty quantification (UQ) is vital for ensuring that vision-language models (VLMs) behave safely and reliably. A central challenge is to localize uncertainty to its source, determining whether it arises from the image, the text, or…

Computer Vision and Pattern Recognition · Computer Science 2026-02-11 Chenyu Wang , Tianle Chen , H. M. Sabbir Ahmad , Kayhan Batmanghelich , Wenchao Li

The detection of sophisticated hallucinations in Large Language Models (LLMs) is hampered by a ``Detection Dilemma'': methods probing internal states (Internal State Probing) excel at identifying factual inconsistencies but fail on logical…

Computation and Language · Computer Science 2026-01-09 Yusheng Song , Lirong Qiu , Xi Zhang , Zhihao Tang

Vision-language models (VLMs) are widely assumed to exhibit in-context learning (ICL), a property similar to that of their language-only counterparts. While recent work suggests VLMs can perform multimodal ICL (MM-ICL), studies show they…

Computer Vision and Pattern Recognition · Computer Science 2025-06-10 Chengyue Huang , Yuchen Zhu , Sichen Zhu , Jingyun Xiao , Moises Andrade , Shivang Chopra , Zsolt Kira

Vision-language models (VLMs) have demonstrated impressive performance by effectively integrating visual and textual information to solve complex tasks. However, it is not clear how these models reason over the visual and textual data…

Artificial Intelligence · Computer Science 2025-04-15 Pouya Pezeshkpour , Moin Aminnaseri , Estevam Hruschka

Large Vision Language Models (LVLMs) are becoming increasingly important in the medical domain, yet Medical LVLMs (Med-LVLMs) frequently generate hallucinations due to limited expertise and the complexity of medical applications. Existing…

Computer Vision and Pattern Recognition · Computer Science 2025-03-05 Aofei Chang , Le Huang , Parminder Bhatia , Taha Kass-Hout , Fenglong Ma , Cao Xiao

Vision-Language Models (VLMs) have attained exceptional success across multimodal tasks such as image captioning and visual question answering. However, their robustness under noisy conditions remains unfamiliar. In this study, we present a…

Computer Vision and Pattern Recognition · Computer Science 2025-09-17 Purushoth , Alireza

Large Vision-Language Models (VLMs) rely on effective multimodal alignment between pre-trained vision encoders and Large Language Models (LLMs) to integrate visual and textual information. This paper presents a comprehensive analysis of…

Computer Vision and Pattern Recognition · Computer Science 2025-11-25 Shweta Mahajan , Hoang Le , Hyojin Park , Farzad Farhadzadeh , Munawar Hayat , Fatih Porikli

Recent studies have examined attention dynamics in large vision-language models (LVLMs) to detect hallucinations. However, existing approaches remain limited in reliably distinguishing hallucinated from factually grounded outputs, as they…

Computer Vision and Pattern Recognition · Computer Science 2026-01-29 Xiaofeng Zhang , Yuanchao Zhu , Chaochen Gu , Xiaosong Yuan , Qiyan Zhao , Jiawei Cao , Feilong Tang , Sinan Fan , Yaomin Shen , Chen Shen , Hao Tang

Large Vision-Language Models (LVLMs) integrate image encoders with Large Language Models (LLMs) to process multi-modal inputs and perform complex visual tasks. However, they often generate hallucinations by describing non-existent objects…

Computer Vision and Pattern Recognition · Computer Science 2025-02-25 Yaqi Sun , Kyohei Atarashi , Koh Takeuchi , Hisashi Kashima