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Object hallucination is a critical issue in Large Vision-Language Models (LVLMs), where outputs include objects that do not appear in the input image. A natural question arises from this phenomenon: Which component of the LVLM pipeline…

Computer Vision and Pattern Recognition · Computer Science 2026-02-26 Lingfeng Ren , Weihao Yu , Runpeng Yu , Xinchao Wang

Multimodal large language models (MLLMs) typically rely on a single late-layer feature from a frozen vision encoder, leaving the encoder's rich hierarchy of visual cues under-utilized. MLLMs still suffer from visually ungrounded…

Computer Vision and Pattern Recognition · Computer Science 2026-02-18 Chenchen Lin , Sanbao Su , Rachel Luo , Yuxiao Chen , Yan Wang , Marco Pavone , Fei Miao

Large vision-language models (LVLMs) remain vulnerable to hallucination, often generating content misaligned with visual inputs. Although recent training-based approaches aim to mitigate hallucination, they typically rely on predefined or…

Computer Vision and Pattern Recognition · Computer Science 2025-09-30 Shujun Liu , Siyuan Wang , Zejun Li , Jianxiang Wang , Cheng Zeng , Zhongyu Wei

Multimodal Large Language Models (MLLMs) have demonstrated remarkable reasoning capabilities yet continue to suffer from hallucination, where generated text contradicts visual content. In this paper, we introduce Dual-Anchor Introspective…

Computer Vision and Pattern Recognition · Computer Science 2026-04-14 Yebo Wu , Han Jin , Zhijiang Guo , Li Li

Recently, the use of large language models (LLMs) for Verilog code generation has attracted great research interest to enable hardware design automation. However, previous works have shown a gap between the ability of LLMs and the practical…

Programming Languages · Computer Science 2025-01-10 Yiyao Yang , Fu Teng , Pengju Liu , Mengnan Qi , Chenyang Lv , Ji Li , Xuhong Zhang , Zhezhi He

Large Vision-Language Models (LVLMs) may produce outputs that are unfaithful to reality, also known as visual hallucinations (VH), which significantly impedes their real-world usage. To alleviate VH, various decoding strategies have been…

Computer Vision and Pattern Recognition · Computer Science 2025-03-24 Xianwei Zhuang , Zhihong Zhu , Yuxin Xie , Liming Liang , Yuexian Zou

Large Language Models (LLMs) have become increasingly important in natural language processing, enabling advanced data analytics through natural language queries. However, these models often generate "hallucinations"-inaccurate or…

Computation and Language · Computer Science 2024-10-29 Mikhail Rumiantsau , Aliaksei Vertsel , Ilya Hrytsuk , Isaiah Ballah

Large vision-language models (LVLMs) excel at multimodal tasks but are prone to misinterpreting visual inputs, often resulting in hallucinations and unreliable outputs. We present DROPOUT DECODING, a novel inference-time approach that…

Computer Vision and Pattern Recognition · Computer Science 2025-12-30 Yixiong Fang , Ziran Yang , Zhaorun Chen , Zhuokai Zhao , Jiawei Zhou

Despite the rapid success of Large Vision-Language Models (LVLMs), a persistent challenge is their tendency to generate hallucinated content, undermining reliability in real-world use. Existing training-free methods address hallucinations…

Computer Vision and Pattern Recognition · Computer Science 2026-01-05 Neeraj Anand , Samyak Jha , Udbhav Bamba , Rahul Rahaman

Vision language models (VLMs) perceive the world through a combination of a visual encoder and a large language model (LLM). The visual encoder, pre-trained on large-scale vision-text datasets, provides zero-shot generalization to visual…

Computer Vision and Pattern Recognition · Computer Science 2024-07-19 Moon Ye-Bin , Nam Hyeon-Woo , Wonseok Choi , Tae-Hyun Oh

Multimodal large language models (MLLMs) have achieved remarkable progress in vision-language reasoning, yet they remain vulnerable to hallucination, where generated content deviates from visual evidence. Existing mitigation strategies…

Computer Vision and Pattern Recognition · Computer Science 2026-03-02 Xingyu Zhu , Kesen Zhao , Liang Yi , Shuo Wang , Zhicai Wang , Beier Zhu , Hanwang Zhang

Despite their success, Large Vision-Language Models (LVLMs) remain vulnerable to hallucinations. While existing studies attribute the cause of hallucinations to insufficient visual attention to image tokens, our findings indicate that…

Computer Vision and Pattern Recognition · Computer Science 2025-03-17 Beitao Chen , Xinyu Lyu , Lianli Gao , Jingkuan Song , Heng Tao Shen

Large Vision-Language Models (LVLMs) excel in integrating visual and linguistic contexts to produce detailed content, facilitating applications such as image captioning. However, using LVLMs to generate descriptions often faces the…

Computer Vision and Pattern Recognition · Computer Science 2024-06-19 Mingqian Feng , Yunlong Tang , Zeliang Zhang , Chenliang Xu

Large Vision-Language Models (LVLMs) still struggle with vision hallucination, where generated responses are inconsistent with the visual input. Existing methods either rely on large-scale annotated data for fine-tuning, which incurs…

Computer Vision and Pattern Recognition · Computer Science 2026-04-21 Yu Zhang , Chuyang Sun , Kehai Chen , Xuefeng Bai , Yang Xiang , Min Zhang

Vision-Language Models (VLMs) are becoming increasingly popular in the medical domain, bridging the gap between medical images and clinical language. Existing VLMs demonstrate an impressive ability to comprehend medical images and text…

Computer Vision and Pattern Recognition · Computer Science 2025-06-24 Bidur Khanal , Sandesh Pokhrel , Sanjay Bhandari , Ramesh Rana , Nikesh Shrestha , Ram Bahadur Gurung , Cristian Linte , Angus Watson , Yash Raj Shrestha , Binod Bhattarai

Large Vision Language Models (LVLMs) achieve strong performance across multimodal tasks by integrating visual perception with language understanding. However, how vision information contributes to the model's decoding process remains…

Computer Vision and Pattern Recognition · Computer Science 2026-05-14 Beomsik Cho , Jaehyung Kim

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

Despite significant advancements in Large Vision-Language Models, Object Hallucination (OH) remains a persistent challenge. Building upon prior studies on contrastive decoding that address this issue without requiring additional model…

Computer Vision and Pattern Recognition · Computer Science 2025-05-30 Jihoon Lee , Min Song

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

Hallucination has been a major problem for large language models and remains a critical challenge when it comes to multimodality in which vision-language models (VLMs) have to deal with not just textual but also visual inputs. Despite rapid…

Computer Vision and Pattern Recognition · Computer Science 2024-07-23 Zhecan Wang , Garrett Bingham , Adams Yu , Quoc Le , Thang Luong , Golnaz Ghiasi