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Large vision-language models (LVLMs) are now central to healthcare applications such as medical visual question answering and imaging report generation. Yet, these models remain vulnerable to hallucination outputs that appear plausible but…

Computer Vision and Pattern Recognition · Computer Science 2025-12-02 Zahra Mahdavi , Zahra Khodakaramimaghsoud , Hooman Khaloo , Sina Bakhshandeh Taleshani , Erfan Hashemi , Javad Mirzapour Kaleybar , Omid Nejati Manzari

The advent of Vision Language Models (VLM) has allowed researchers to investigate the visual understanding of a neural network using natural language. Beyond object classification and detection, VLMs are capable of visual comprehension and…

Computer Vision and Pattern Recognition · Computer Science 2024-08-12 Haz Sameen Shahgir , Khondker Salman Sayeed , Abhik Bhattacharjee , Wasi Uddin Ahmad , Yue Dong , Rifat Shahriyar

Visual question answering (VQA) is the task of answering questions about an image. The task assumes an understanding of both the image and the question to provide a natural language answer. VQA has gained popularity in recent years due to…

Computer Vision and Pattern Recognition · Computer Science 2023-11-01 Deepanway Ghosal , Navonil Majumder , Roy Ka-Wei Lee , Rada Mihalcea , Soujanya Poria

Large Vision-Language Models (LVLMs) exhibit outstanding performance on vision-language tasks but struggle with hallucination problems. Through in-depth analysis of LVLM activation patterns, we reveal two key findings: 1) truthfulness and…

Computer Vision and Pattern Recognition · Computer Science 2026-02-26 Jianghao Yin , Qin Chen , Kedi Chen , Jie Zhou , Xingjiao Wu , Liang He

Multimodal Large Language Models (MLLMs) strive to achieve a profound, human-like understanding of and interaction with the physical world, but often exhibit a shallow and incoherent integration when acquiring information (Perception) and…

Recently, Multimodal Large Language Models (MLLMs) and Vision Language Models (VLMs) have shown great promise in language-guided perceptual tasks such as recognition, segmentation, and object detection. However, their effectiveness in…

Computer Vision and Pattern Recognition · Computer Science 2025-09-16 Xu Cao , Yifan Shen , Bolin Lai , Wenqian Ye , Yunsheng Ma , Joerg Heintz , Jintai Chen , Meihuan Huang , Jianguo Cao , Aidong Zhang , James M. Rehg

Puzzles have long served as compact and revealing probes of human cognition, isolating abstraction, rule discovery, and systematic reasoning with minimal reliance on prior knowledge. Leveraging these properties, visual puzzles have recently…

Computer Vision and Pattern Recognition · Computer Science 2026-01-21 Maria Lymperaiou , Vasileios Karampinis , Giorgos Filandrianos , Angelos Vlachos , Chrysoula Zerva , Athanasios Voulodimos

While sequential reasoning enhances the capability of Vision-Language Models (VLMs) to execute complex multimodal tasks, their reliability in grounding these reasoning chains within actual visual evidence remains insufficiently explored. We…

Computer Vision and Pattern Recognition · Computer Science 2026-02-03 Rory Driscoll , Alexandros Christoforos , Chadbourne Davis

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

Hallucinations in Large Language Models (LLMs) pose a major barrier to their reliable use in critical decision-making. Although existing hallucination detection methods have improved accuracy, they still struggle with disentangling semantic…

Computation and Language · Computer Science 2026-04-02 Junjie Hu , Gang Tu , ShengYu Cheng , Jinxin Li , Jinting Wang , Rui Chen , Zhilong Zhou , Dongbo Shan

Large Language Models (LLMs) have gained widespread adoption in various natural language processing tasks, including question answering and dialogue systems. However, a major drawback of LLMs is the issue of hallucination, where they…

Computation and Language · Computer Science 2024-07-08 Yuyan Chen , Qiang Fu , Yichen Yuan , Zhihao Wen , Ge Fan , Dayiheng Liu , Dongmei Zhang , Zhixu Li , Yanghua Xiao

Multi-modal Large Language Models (MLLMs) for Visual Question Answering (VQA) often suffer from dual limitations: knowledge hallucination and insufficient fine-grained visual perception. Crucially, we identify that commonsense graphs and…

Computer Vision and Pattern Recognition · Computer Science 2026-05-28 Zhiyang Li , Ao Ke , Yukun Cao , Xike Xie

Despite the significant success of Large Vision-Language models(LVLMs), these models still suffer hallucinations when describing images, generating answers that include non-existent objects. It is reported that these models tend to…

Computer Vision and Pattern Recognition · Computer Science 2025-03-25 Bin Li , Dehong Gao , Yeyuan Wang , Linbo Jin , Shanqing Yu , Xiaoyan Cai , Libin Yang

Recent developments in multimodal large language models (MLLM) have equipped language models to reason about vision and language jointly. This permits MLLMs to both perceive and answer questions about data visualization across a variety of…

Human-Computer Interaction · Computer Science 2025-04-23 Zhimin Li , Haichao Miao , Xinyuan Yan , Valerio Pascucci , Matthew Berger , Shusen Liu

Self-verification, re-invoking the same vision language model (VLM) in a fresh context to check its own generated answer, is increasingly used as a default safety layer for medical visual question answering (VQA). We argue that this…

Computer Vision and Pattern Recognition · Computer Science 2026-05-12 Ruinan Jin , Beidi Zhao , Myeongkyun Kang , Qiong Zhang , Xiaoxiao Li

As Large Language Models (LLMs) become more pervasive across various users and scenarios, identifying potential issues when using these models becomes essential. Examples of such issues include: bias, inconsistencies, and hallucination.…

Artificial Intelligence · Computer Science 2024-05-24 Maryam Amirizaniani , Jihan Yao , Adrian Lavergne , Elizabeth Snell Okada , Aman Chadha , Tanya Roosta , Chirag Shah

Visual Question Answering (VQA) holds great potential for assisting Blind and Low Vision (BLV) users, yet real-world usage remains challenging. Due to visual impairments, BLV users often take blurry or poorly framed photos and face…

Computer Vision and Pattern Recognition · Computer Science 2025-09-09 Wanyin Cheng , Zanxi Ruan

Explainability is critical for the clinical adoption of medical visual question answering (VQA) systems, as physicians require transparent reasoning to trust AI-generated diagnoses. We present MedXplain-VQA, a comprehensive framework…

Computer Vision and Pattern Recognition · Computer Science 2025-10-28 Hai-Dang Nguyen , Minh-Anh Dang , Minh-Tan Le , Minh-Tuan Le

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

Complex visual reasoning remains a key challenge today. Typically, the challenge is tackled using methodologies such as Chain of Thought (COT) and visual instruction tuning. However, how to organically combine these two methodologies for…

Computer Vision and Pattern Recognition · Computer Science 2025-01-08 Wanpeng Hu , Haodi Liu , Lin Chen , Feng Zhou , Changming Xiao , Qi Yang , Changshui Zhang