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Despite achieving rapid developments and with widespread applications, Large Vision-Language Models (LVLMs) confront a serious challenge of being prone to generating hallucinations. An over-reliance on linguistic priors has been identified…

Computer Vision and Pattern Recognition · Computer Science 2024-02-29 Lanyun Zhu , Deyi Ji , Tianrun Chen , Peng Xu , Jieping Ye , Jun Liu

Vision-Language Models (VLMs) often suffer from hallucination, partly due to challenges in aligning multimodal information. We propose Prompt-in-Image, a simple method that embeds textual instructions directly into images. This removes the…

Computer Vision and Pattern Recognition · Computer Science 2025-08-05 Zhaochen Wang , Yiwei Wang , Yujun Cai

The rapidly developing Large Vision Language Models (LVLMs) have shown notable capabilities on a range of multi-modal tasks, but still face the hallucination phenomena where the generated texts do not align with the given contexts,…

Computer Vision and Pattern Recognition · Computer Science 2025-01-07 Wenyi Xiao , Ziwei Huang , Leilei Gan , Wanggui He , Haoyuan Li , Zhelun Yu , Fangxun Shu , Hao Jiang , Linchao Zhu

Object hallucination poses a significant challenge in vision-language (VL) models, often leading to the generation of nonsensical or unfaithful responses with non-existent objects. However, the absence of a general measurement for…

Computer Vision and Pattern Recognition · Computer Science 2024-08-14 Holy Lovenia , Wenliang Dai , Samuel Cahyawijaya , Ziwei Ji , Pascale Fung

Multimodal large language models (MLLMs) have enabled a wide range of advanced vision-language applications, including fine-grained object recognition and contextual understanding. When querying specific regions or objects in an image,…

Computer Vision and Pattern Recognition · Computer Science 2025-11-17 Mingjie Xu , Jinpeng Chen , Yuzhi Zhao , Jason Chun Lok Li , Yue Qiu , Zekang Du , Mengyang Wu , Pingping Zhang , Kun Li , Hongzheng Yang , Wenao Ma , Jiaheng Wei , Qinbin Li , Kangcheng Liu , Wenqiang Lei

Vision-Language Models (VLMs) have demonstrated remarkable progress in multimodal tasks, but remain susceptible to hallucinations, where generated text deviates from the underlying visual content. Existing hallucination detection methods…

Computer Vision and Pattern Recognition · Computer Science 2026-04-20 Feiran Zhang , Yixin Wu , Zhenghua Wang , Xiaohua Wang , Changze Lv , Xuanjing Huang , Xiaoqing Zheng

Object hallucination critically undermines the reliability of Multimodal Large Language Models, often stemming from a fundamental failure in cognitive introspection, where models blindly trust linguistic priors over specific visual…

Computer Vision and Pattern Recognition · Computer Science 2026-01-09 Shuliang Liu , Songbo Yang , Dong Fang , Sihang Jia , Yuqi Tang , Lingfeng Su , Ruoshui Peng , Yibo Yan , Xin Zou , Xuming Hu

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

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

Multimodal Large Language Models (MLLMs) such as GPT-4V and Gemini Pro face challenges in achieving human-level perception in Visual Question Answering (VQA), particularly in object-oriented perception tasks which demand fine-grained…

Computation and Language · Computer Science 2024-04-09 Songtao Jiang , Yan Zhang , Chenyi Zhou , Yeying Jin , Yang Feng , Jian Wu , Zuozhu Liu

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 demonstrated impressive multimodal reasoning capabilities, but they remain susceptible to hallucination, particularly object hallucination where non-existent objects or incorrect attributes are…

Computer Vision and Pattern Recognition · Computer Science 2025-08-06 Cong-Duy Nguyen , Xiaobao Wu , Duc Anh Vu , Shuai Zhao , Thong Nguyen , Anh Tuan Luu

Large Vision-Language Models (LVLMs) are susceptible to object hallucinations, an issue in which their generated text contains non-existent objects, greatly limiting their reliability and practicality. Current approaches often rely on the…

Computer Vision and Pattern Recognition · Computer Science 2024-04-24 Ailin Deng , Zhirui Chen , Bryan Hooi

Visual hallucination (VH) means that a multi-modal LLM (MLLM) imagines incorrect details about an image in visual question answering. Existing studies find VH instances only in existing image datasets, which results in biased understanding…

Computer Vision and Pattern Recognition · Computer Science 2024-06-18 Wen Huang , Hongbin Liu , Minxin Guo , Neil Zhenqiang Gong

Recent studies have shown that large vision-language models (LVLMs) often suffer from the issue of object hallucinations (OH). To mitigate this issue, we introduce an efficient method that edits the model weights based on an unsafe…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Le Yang , Ziwei Zheng , Boxu Chen , Zhengyu Zhao , Chenhao Lin , Chao Shen

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) 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

Object hallucination is a significant challenge that hinders the application of large vision-language models (LVLMs) in practice. We hypothesize that one possible origin of hallucination is the model's tendency to prioritize text generation…

Computer Vision and Pattern Recognition · Computer Science 2026-05-21 Meng Shen , Minghao Wu , Deepu Rajan

Visual prompting (VP) is a new technique that adapts well-trained frozen models for source domain tasks to target domain tasks. This study examines VP's benefits for black-box model-level backdoor detection. The visual prompt in VP maps…

Computer Vision and Pattern Recognition · Computer Science 2025-04-08 Zi-Xuan Huang , Jia-Wei Chen , Zhi-Peng Zhang , Chia-Mu Yu

Large vision-language models (LVLMs) have demonstrated remarkable multimodal comprehension and reasoning capabilities, but they still suffer from severe object hallucination. Previous studies primarily attribute the flaw to linguistic prior…

Computer Vision and Pattern Recognition · Computer Science 2025-08-05 Haohan Zheng , Zhenguo Zhang