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Existing vision-language models (VLMs) often suffer from visual hallucination, where the generated responses contain inaccuracies that are not grounded in the visual input. Efforts to address this issue without model finetuning primarily…

Computer Vision and Pattern Recognition · Computer Science 2026-04-10 Shunqi Mao , Chaoyi Zhang , Weidong Cai

Although Large Vision-Language Models (LVLMs) have made substantial progress, hallucination, where generated text is not grounded in the visual input, remains a challenge. As LVLMs become stronger, previously reported hallucination…

Computer Vision and Pattern Recognition · Computer Science 2026-03-03 April Fu

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

Multimodal large language models (MLLMs) that integrate visual and textual reasoning leverage chain-of-thought (CoT) prompting to tackle complex visual tasks, yet continue to exhibit visual hallucinations and an over-reliance on textual…

Computer Vision and Pattern Recognition · Computer Science 2025-10-24 Jing Bi , Guangyu Sun , Ali Vosoughi , Chen Chen , Chenliang Xu

Large Vision-Language Models have shown strong multimodal reasoning capabilities, yet they remain susceptible to object hallucinations when language priors dominate insufficient or misaligned visual evidence. Training-free contrastive…

Computer Vision and Pattern Recognition · Computer Science 2026-05-25 Xiaoyi Huang , Kejia Zhang , Zhiming Luo

Current research on video hallucination mitigation primarily focuses on isolated error types, leaving compositional hallucinations, arising from incorrect reasoning over multiple interacting spatial and temporal factors largely…

Computer Vision and Pattern Recognition · Computer Science 2026-02-03 Wenbin Xing , Quanxing Zha , Lizheng Zu , Mengran Li , Ming Li , Junchi Yan

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

Multimodal Large Language Models (MLLMs) have shown remarkable capability in assisting disease diagnosis in medical visual question answering (VQA). However, their outputs remain vulnerable to hallucinations (i.e., responses that contradict…

Computer Vision and Pattern Recognition · Computer Science 2026-01-27 Mengyuan Jin , Zehui Liao , Yong Xia

Multimodal large language models (MLLMs) suffer from pronounced hallucinations in remote sensing visual question-answering (RS-VQA), primarily caused by visual grounding failures in large-scale scenes or misinterpretation of fine-grained…

Computer Vision and Pattern Recognition · Computer Science 2026-03-04 Yi Liu , Jing Zhang , Di Wang , Xiaoyu Tian , Haonan Guo , Bo Du

Despite significant advancements in Vision-Language Models (VLMs), the performance of existing VLMs remains hindered by object hallucination, a critical challenge to achieving accurate visual understanding. To address this issue, we propose…

Computer Vision and Pattern Recognition · Computer Science 2026-03-31 Woohyeon Park , Woojin Kim , Jaeik Kim , Jaeyoung Do

In recent years, the field of vision-language model pre-training has experienced rapid advancements, driven primarily by the continuous enhancement of textual capabilities in large language models. However, existing training paradigms for…

Computer Vision and Pattern Recognition · Computer Science 2025-05-20 Xinsong Zhang , Yarong Zeng , Xinting Huang , Hu Hu , Runquan Xie , Han Hu , Zhanhui Kang

Multimodal large reasoning models (MLRMs) often suffer from hallucinations that stem not only from insufficient visual grounding but also from imbalanced allocation between perception and reasoning processes. Building upon recent…

Artificial Intelligence · Computer Science 2026-03-10 Haolang Lu , Bolun Chu , WeiYe Fu , Guoshun Nan , Junning Liu , Minghui Pan , Qiankun Li , Yi Yu , Hua Wang , Kun Wang

LVLMs have achieved strong multimodal reasoning capabilities but remain prone to hallucinations, producing outputs inconsistent with visual inputs or user instructions. Existing training-free methods, including contrastive decoding and…

Computer Vision and Pattern Recognition · Computer Science 2026-02-18 Guangtao Lyu , Qi Liu , Chenghao Xu , Jiexi Yan , Muli Yang , Xueting Li , Fen Fang , Cheng Deng

This paper presents a novel approach to enhance image-to-image generation by leveraging the multimodal capabilities of the Large Language and Vision Assistant (LLaVA). We propose a framework where LLaVA analyzes input images and generates…

Computer Vision and Pattern Recognition · Computer Science 2024-11-13 Zhicheng Ding , Panfeng Li , Qikai Yang , Siyang Li

Vision Language Models (VLMs) are increasingly used in autonomous driving to help understand traffic scenes, but they sometimes produce hallucinations, which are false details not grounded in the visual input. Detecting and mitigating…

Robotics · Computer Science 2025-11-11 Keke Long , Jiacheng Guo , Tianyun Zhang , Hongkai Yu , Xiaopeng Li

Recent breakthroughs in reasoning language models have significantly advanced text-based reasoning. On the other hand, Multi-modal Large Language Models (MLLMs) still lag behind, hindered by their outdated internal LLMs. Upgrading these…

Computer Vision and Pattern Recognition · Computer Science 2026-03-24 Yunhao Gou , Kai Chen , Zhili Liu , Lanqing Hong , Xin Jin , Zhenguo Li , James T. Kwok , Yu Zhang

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

Vision Language models (VLMs) often hallucinate non-existent objects. Detecting hallucination is analogous to detecting deception: a single final statement is insufficient, one must examine the underlying reasoning process. Yet existing…

Computer Vision and Pattern Recognition · Computer Science 2026-03-31 Abin Shoby , Ta Duc Huy , Tuan Dung Nguyen , Minh Khoi Ho , Qi Chen , Anton van den Hengel , Phi Le Nguyen , Johan W. Verjans , Vu Minh Hieu Phan

Multi-modal Large Language Models (MLLMs) tuned on machine-generated instruction-following data have demonstrated remarkable performance in various multi-modal understanding and generation tasks. However, the hallucinations inherent in…

Computer Vision and Pattern Recognition · Computer Science 2024-03-26 Qifan Yu , Juncheng Li , Longhui Wei , Liang Pang , Wentao Ye , Bosheng Qin , Siliang Tang , Qi Tian , Yueting Zhuang

In recent years, synthetic visual instructions by generative language model have demonstrated plausible text generation performance on the visual question-answering tasks. However, challenges persist in the hallucination of generative…

Computer Vision and Pattern Recognition · Computer Science 2024-02-14 Sungguk Cha , Jusung Lee , Younghyun Lee , Cheoljong Yang
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