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Object hallucination remains a primary obstacle to the reliable deployment of Multimodal Large Language Models (MLLMs). Current inference-time mitigation methods mainly assume hallucinations stem from visual neglect, steering models to…

Computation and Language · Computer Science 2026-05-28 Jingwen Wu , Xijun Zhang , Ge Song

Recent advancements in Large Language Models (LLMs) have facilitated the development of Multimodal LLMs (MLLMs). Despite their impressive capabilities, MLLMs often suffer from over-reliance on unimodal biases (e.g., language bias and vision…

Computation and Language · Computer Science 2024-11-14 Meiqi Chen , Yixin Cao , Yan Zhang , Chaochao Lu

This paper aims to address the challenge of hallucinations in Multimodal Large Language Models (MLLMs) particularly for dense image captioning tasks. To tackle the challenge, we identify the current lack of a metric that finely measures the…

Computer Vision and Pattern Recognition · Computer Science 2025-03-11 Cong Chen , Mingyu Liu , Chenchen Jing , Yizhou Zhou , Fengyun Rao , Hao Chen , Bo Zhang , Chunhua Shen

Despite their impressive performance across a wide range of tasks, Large Vision-Language Models (LVLMs) remain prone to hallucination. In this study, we propose a comprehensive intervention framework aligned with the transformer's causal…

Computer Vision and Pattern Recognition · Computer Science 2026-01-07 Jiaye Qian , Ge Zheng , Yuchen Zhu , Sibei Yang

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

Despite the impressive capabilities of Large Vision-Language Models (LVLMs), they remain susceptible to hallucinations-generating content that is inconsistent with the input image. Existing training-free hallucination mitigation methods…

Machine Learning · Computer Science 2025-05-20 Kai Tang , Jinhao You , Xiuqi Ge , Hanze Li , Yichen Guo , Xiande Huang

Large Vision-Language Models (LVLMs) have advanced considerably, intertwining visual recognition and language understanding to generate content that is not only coherent but also contextually attuned. Despite their success, LVLMs still…

Computer Vision and Pattern Recognition · Computer Science 2023-11-29 Sicong Leng , Hang Zhang , Guanzheng Chen , Xin Li , Shijian Lu , Chunyan Miao , Lidong Bing

Despite great success across various multimodal tasks, Large Vision-Language Models (LVLMs) often encounter object hallucinations with generated textual responses being inconsistent with the actual objects in images. We examine different…

Computer Vision and Pattern Recognition · Computer Science 2025-03-17 Wenbin An , Feng Tian , Sicong Leng , Jiahao Nie , Haonan Lin , QianYing Wang , Ping Chen , Xiaoqin Zhang , Shijian Lu

Large Vision Language Models (LVLMs) have demonstrated remarkable capabilities in understanding and describing visual content, achieving state-of-the-art performance across various vision-language tasks. However, these models often generate…

Computer Vision and Pattern Recognition · Computer Science 2025-03-27 Kazi Hasan Ibn Arif , Sajib Acharjee Dip , Khizar Hussain , Lang Zhang , Chris Thomas

Multimodal Large Language Models (MLLMs) excel in vision-language tasks such as image captioning but remain prone to object hallucinations, where they describe objects that do not appear in the image. To mitigate this, we propose LISA, a…

Computer Vision and Pattern Recognition · Computer Science 2025-11-14 Zhihui Guo , Xin Man , Hui Xu , Jie Shao , Zhiguo Jiang , Xianchao Zhang , Heng Tao Shen

Object hallucination remains a critical challenge in Large Vision-Language Models (LVLMs), where models generate content inconsistent with visual inputs. Existing language-decoder based mitigation approaches often regulate visual or textual…

Computer Vision and Pattern Recognition · Computer Science 2025-11-13 Liu Yu , Zhonghao Chen , Ping Kuang , Zhikun Feng , Fan Zhou , Lan Wang , Gillian Dobbie

Recent advancements in multimodal large language models (MLLMs) have significantly improved performance in visual question answering. However, they often suffer from hallucinations. In this work, hallucinations are categorized into two main…

Computer Vision and Pattern Recognition · Computer Science 2025-06-10 Feilong Tang , Chengzhi Liu , Zhongxing Xu , Ming Hu , Zelin Peng , Zhiwei Yang , Jionglong Su , Minquan Lin , Yifan Peng , Xuelian Cheng , Imran Razzak , Zongyuan Ge

Recent advancements in large vision-language models (LVLMs) have demonstrated impressive capability in visual information understanding with human language. Despite these advances, LVLMs still face challenges with multimodal hallucination,…

Computer Vision and Pattern Recognition · Computer Science 2024-05-16 Zongbo Han , Zechen Bai , Haiyang Mei , Qianli Xu , Changqing Zhang , Mike Zheng Shou

Multimodal Large Language Models (MLLMs) have shown impressive perception and reasoning capabilities, yet they often suffer from hallucinations -- generating outputs that are linguistically coherent but inconsistent with the context of the…

Computer Vision and Pattern Recognition · Computer Science 2025-09-30 Bingkui Tong , Jiaer Xia , Kaiyang Zhou

Hallucinations in Large Vision-Language Models (LVLMs) significantly undermine their reliability, motivating researchers to explore the causes of hallucination. However, most studies primarily focus on the language aspect rather than the…

Computer Vision and Pattern Recognition · Computer Science 2025-04-02 Zhangqi Jiang , Junkai Chen , Beier Zhu , Tingjin Luo , Yankun Shen , Xu Yang

Multimodal Large Language Models (MLLMs) frequently suffer from hallucination issues, generating information about objects that are not present in input images during vision-language tasks. These hallucinations particularly undermine model…

Computer Vision and Pattern Recognition · Computer Science 2025-06-16 Dokyoon Yoon , Youngsook Song , Woomyong Park

Spatial relation hallucinations pose a persistent challenge in large vision-language models (LVLMs), leading to generate incorrect predictions about object positions and spatial configurations within an image. To address this issue, we…

Computation and Language · Computer Science 2025-03-24 Jiarui Wu , Zhuo Liu , Hangfeng He

Multimodal Large Language Models (MLLMs) have made significant progress in bridging the gap between visual and language modalities. However, hallucinations in MLLMs, where the generated text does not align with image content, continue to be…

Artificial Intelligence · Computer Science 2024-08-05 Kohou Wang , Xiang Liu , Zhaoxiang Liu , Kai Wang , Shiguo Lian

Large Vision-Language Models (LVLMs) with discrete image tokenizers unify multimodal representations by encoding visual inputs into a finite set of tokens. Despite their effectiveness, we find that these models still hallucinate…

Computer Vision and Pattern Recognition · Computer Science 2025-05-29 Weixing Wang , Zifeng Ding , Jindong Gu , Rui Cao , Christoph Meinel , Gerard de Melo , Haojin Yang

Vision-language models (VLMs) have recently shown remarkable capabilities in visual understanding and generation, but remain vulnerable to adversarial manipulations of visual content. Prior object-hiding attacks primarily rely on…

Cryptography and Security · Computer Science 2026-03-18 Amira Guesmi , Muhammad Shafique