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Large Vision-Language Models (LVLMs) frequently suffer from severe hallucination issues. Existing mitigation strategies predominantly rely on isolated, single-step states to enhance visual focus or suppress strong linguistic priors.…

Computer Vision and Pattern Recognition · Computer Science 2026-04-02 Bei Yan , Yuecong Min , Jie Zhang , Shiguang Shan , Xilin Chen

Video Large Language Models (VideoLLMs) have shown remarkable progress in video understanding. However, these models still struggle to effectively perceive and exploit rich temporal information in videos when responding to user queries.…

Computer Vision and Pattern Recognition · Computer Science 2025-12-05 Chang-Hsun Wu , Kai-Po Chang , Yu-Yang Sheng , Hung-Kai Chung , Kuei-Chun Wang , Yu-Chiang Frank Wang

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

While Multimodal Large Language Models (MLLMs) have achieved remarkable progress in open-ended visual question answering, they remain vulnerable to hallucinations. These are outputs that contradict or misrepresent input semantics, posing a…

Computer Vision and Pattern Recognition · Computer Science 2025-10-01 Jianjiang Yang , Yanshu li , Ziyan Huang

We propose a novel unsupervised backlit image enhancement method, abbreviated as CLIP-LIT, by exploring the potential of Contrastive Language-Image Pre-Training (CLIP) for pixel-level image enhancement. We show that the open-world CLIP…

Computer Vision and Pattern Recognition · Computer Science 2023-10-02 Zhexin Liang , Chongyi Li , Shangchen Zhou , Ruicheng Feng , Chen Change Loy

Vision-Language Models (VLMs) excel at visual understanding but often suffer from visual hallucinations, where they generate descriptions of nonexistent objects, actions, or concepts, posing significant risks in safety-critical…

Computer Vision and Pattern Recognition · Computer Science 2025-10-21 Tsung-Han Wu , Heekyung Lee , Jiaxin Ge , Joseph E. Gonzalez , Trevor Darrell , David M. Chan

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

Large vision language models (LVLMs) integrate large language models (LLMs) with pre-trained vision encoders, thereby activating the perception capability of the model to understand image inputs for different queries and conduct subsequent…

Computer Vision and Pattern Recognition · Computer Science 2024-11-26 Yihe Deng , Pan Lu , Fan Yin , Ziniu Hu , Sheng Shen , Quanquan Gu , James Zou , Kai-Wei Chang , Wei Wang

We investigate the efficacy of visual prompting to adapt large-scale models in vision. Following the recent approach from prompt tuning and adversarial reprogramming, we learn a single image perturbation such that a frozen model prompted…

Computer Vision and Pattern Recognition · Computer Science 2022-06-06 Hyojin Bahng , Ali Jahanian , Swami Sankaranarayanan , Phillip Isola

Large language models (LLMs) frequently generate confident yet inaccurate responses, introducing significant risks for deployment in safety-critical domains. We present a novel, test-time approach to detecting model hallucination through…

Machine Learning · Computer Science 2025-10-07 Hazel Kim , Tom A. Lamb , Adel Bibi , Philip Torr , Yarin Gal

To mitigate hallucinations in large language models (LLMs), we propose a framework that focuses on errors induced by prompts. Our method extends a chain-style knowledge distillation approach by incorporating a programmable module that…

Computation and Language · Computer Science 2026-01-08 Jinbo Hao , Kai Yang , Qingzhen Su , Yifan Li , Chao Jiang

Large Vision-Language Models (LVLMs) have recently demonstrated remarkable progress, yet hallucination remains a critical barrier, particularly in chart understanding, which requires sophisticated perceptual and cognitive abilities as well…

Computer Vision and Pattern Recognition · Computer Science 2025-09-23 Xingqi Wang , Yiming Cui , Xin Yao , Shijin Wang , Guoping Hu , Xiaoyu Qin

Large Vision-Language Models (LVLMs) have achieved remarkable progress in visual-textual understanding, yet their reliability is critically undermined by hallucinations, i.e., the generation of factually incorrect or inconsistent responses.…

Computer Vision and Pattern Recognition · Computer Science 2026-04-29 Chengsheng Zhang , Chenghao Sun , Xinyan Jiang , Wei Li , Xinmei Tian

While Large Vision-Language Models (LVLMs) have rapidly advanced in recent years, the prevalent issue known as the `hallucination' problem has emerged as a significant bottleneck, hindering their real-world deployments. Existing methods…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Fushuo Huo , Wenchao Xu , Zhong Zhang , Haozhao Wang , Zhicheng Chen , Peilin Zhao

Instruction tuned Large Vision Language Models (LVLMs) have significantly advanced in generalizing across a diverse set of multi-modal tasks, especially for Visual Question Answering (VQA). However, generating detailed responses that are…

Computer Vision and Pattern Recognition · Computer Science 2024-02-13 Anisha Gunjal , Jihan Yin , Erhan Bas

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

Despite the success of Vision-Language Models (VLMs) like CLIP in aligning vision and language, their proficiency in detailed, fine-grained visual comprehension remains a key challenge. We present CLIP-IN, a novel framework that bolsters…

Computer Vision and Pattern Recognition · Computer Science 2025-11-18 Ziteng Wang , Siqi Yang , Limeng Qiao , Lin Ma

Large Vision-Language Models (LVLMs) have demonstrated impressive multimodal abilities but remain prone to multilingual object hallucination, with a higher likelihood of generating responses inconsistent with the visual input when utilizing…

Computation and Language · Computer Science 2025-06-16 Zekai Ye , Qiming Li , Xiaocheng Feng , Libo Qin , Yichong Huang , Baohang Li , Kui Jiang , Yang Xiang , Zhirui Zhang , Yunfei Lu , Duyu Tang , Dandan Tu , Bing Qin

Large Vision-Language Models (LVLMs) have made remarkable developments along with the recent surge of large language models. Despite their advancements, LVLMs have a tendency to generate plausible yet inaccurate or inconsistent information…

Computer Vision and Pattern Recognition · Computer Science 2024-12-23 Dexter Neo , Tsuhan Chen

Large pre-trained Vision-Language Models (VLMs) such as CLIP have demonstrated excellent zero-shot generalizability across various downstream tasks. However, recent studies have shown that the inference performance of CLIP can be greatly…

Computer Vision and Pattern Recognition · Computer Science 2024-11-21 Xin Wang , Kai Chen , Jiaming Zhang , Jingjing Chen , Xingjun Ma