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Large vision-language models (LVLMs) achieve impressive performance on multimodal tasks but often suffer from hallucination, and confidently describe objects or attributes not present in the image. Current training-free interventions…

Computer Vision and Pattern Recognition · Computer Science 2026-04-13 Mehrdad Fazli , Bowen Wei , Ahmet Sari , Ziwei Zhu

Hallucinations in Speech Large Language Models (SpeechLLMs) pose significant risks, yet existing detection methods typically rely on gold-standard outputs that are costly or impractical to obtain. Moreover, hallucination detection methods…

Computation and Language · Computer Science 2026-04-22 Jonas Waldendorf , Bashar Awwad Shiekh Hasan , Evgenii Tsymbalov

Vision-language models (VLMs) frequently generate hallucinated content plausible but incorrect claims about image content. We propose a training-free self-correction framework enabling VLMs to iteratively refine responses through…

Computer Vision and Pattern Recognition · Computer Science 2025-12-11 Kassoum Sanogo , Renzo Ardiccioni

Large Vision-Language Models (LVLMs) have achieved remarkable success but continue to struggle with object hallucination (OH), generating outputs inconsistent with visual inputs. While previous work has proposed methods to reduce OH, the…

Computer Vision and Pattern Recognition · Computer Science 2025-05-26 Boxu Chen , Ziwei Zheng , Le Yang , Zeyu Geng , Zhengyu Zhao , Chenhao Lin , Chao Shen

While multimodal large language models excel at various tasks, they still suffer from hallucinations, which limit their reliability and scalability for broader domain applications. To address this issue, recent research mainly focuses on…

Artificial Intelligence · Computer Science 2025-06-10 Liangliang You , Junchi Yao , Shu Yang , Guimin Hu , Lijie Hu , Di Wang

Large Visual Language Models (LVLMs) have demonstrated impressive capabilities across multiple tasks. However, their trustworthiness is often challenged by hallucinations, which can be attributed to the modality misalignment and the…

Computer Vision and Pattern Recognition · Computer Science 2025-09-23 Jiulong Wu , Zhengliang Shi , Shuaiqiang Wang , Jizhou Huang , Dawei Yin , Lingyong Yan , Min Cao , Min Zhang

Existing Large Vision-Language Models (LVLMs) primarily align image features of vision encoder with Large Language Models (LLMs) to leverage their superior text generation capabilities. However, the scale disparity between vision encoder…

Computer Vision and Pattern Recognition · Computer Science 2024-08-01 Shi Liu , Kecheng Zheng , Wei Chen

Despite the great success of Large Vision-Language Models (LVLMs), they inevitably suffer from hallucination. As we know, both the visual encoder and the Large Language Model (LLM) decoder in LVLMs are Transformer-based, allowing the model…

Computation and Language · Computer Science 2025-11-07 Xuan Gong , Tianshi Ming , Xinpeng Wang , Zhihua Wei

Large vision-language models (LVLMs) have shown remarkable abilities in understanding visual information with human languages. However, LVLMs still suffer from object hallucination, which is the problem of generating descriptions that…

Machine Learning · Computer Science 2024-03-19 Yiyang Zhou , Chenhang Cui , Jaehong Yoon , Linjun Zhang , Zhun Deng , Chelsea Finn , Mohit Bansal , Huaxiu Yao

Large Vision Language Models exhibit remarkable capabilities but struggle with hallucinations inconsistencies between images and their descriptions. Previous hallucination evaluation studies on LVLMs have identified hallucinations in terms…

Artificial Intelligence · Computer Science 2024-11-11 Chaoya Jiang , Hongrui Jia , Wei Ye , Mengfan Dong , Haiyang Xu , Ming Yan , Ji Zhang , Shikun Zhang

This study addresses the critical challenge of hallucination mitigation in Large Vision-Language Models (LVLMs) for Visual Question Answering (VQA) tasks through a Split Conformal Prediction (SCP) framework. While LVLMs excel in multi-modal…

Computation and Language · Computer Science 2025-05-16 Yuanchang Ye , Weiyan Wen

Multimodal Large Language Models (MLLMs) have demonstrated strong performance in visual understanding tasks, yet they often suffer from object hallucinations--generating descriptions of objects that are inconsistent with or entirely absent…

Artificial Intelligence · Computer Science 2025-05-27 Xinmiao Hu , Chun Wang , Ruihe An , ChenYu Shao , Xiaojun Ye , Sheng Zhou , Liangcheng Li

When asked to summarize articles or answer questions given a passage, large language models (LLMs) can hallucinate details and respond with unsubstantiated answers that are inaccurate with respect to the input context. This paper describes…

Computation and Language · Computer Science 2024-10-04 Yung-Sung Chuang , Linlu Qiu , Cheng-Yu Hsieh , Ranjay Krishna , Yoon Kim , James Glass

Large language models (LLMs) hold substantial promise for clinical decision support. However, their widespread adoption in medicine, particularly in healthcare, is hindered by their propensity to generate false or misleading outputs, known…

Segmentation Vision-Language Models (VLMs) have significantly advanced grounded visual understanding, yet they remain prone to pixel-grounding hallucinations, producing masks for incorrect objects or for objects that are entirely absent.…

Computer Vision and Pattern Recognition · Computer Science 2026-04-24 Xinzhuo Li , Adheesh Juvekar , Jiaxun Zhang , Xingyou Liu , Muntasir Wahed , Kiet A. Nguyen , Yifan Shen , Tianjiao Yu , Ismini Lourentzou

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

Large Vision-Language Models (LVLMs) have achieved impressive performance, yet research has pointed out a serious issue with object hallucinations within these models. However, there is no clear conclusion as to which part of the model…

Computer Vision and Pattern Recognition · Computer Science 2024-10-07 Yufang Liu , Tao Ji , Changzhi Sun , Yuanbin Wu , Aimin Zhou

Current Large Multimodal Models (LMMs) achieve remarkable progress, yet there remains significant uncertainty regarding their ability to accurately apprehend visual details, that is, in performing detailed captioning. To address this, we…

Computer Vision and Pattern Recognition · Computer Science 2024-04-01 Bohan Zhai , Shijia Yang , Chenfeng Xu , Sheng Shen , Kurt Keutzer , Chunyuan Li , Manling Li

Large Vision-Language Models (LVLMs) exhibit impressive multimodal reasoning capabilities but remain highly susceptible to object hallucination, where models generate responses that are not factually aligned with the visual content. Recent…

Computer Vision and Pattern Recognition · Computer Science 2026-03-25 Younan Zhu , Linwei Tao , Minjing Dong , Chang Xu

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