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Large Vision-Language Models (LVLMs) commonly follow a paradigm that projects visual features and then concatenates them with text tokens to form a unified sequence input for Large Language Models (LLMs). However, this paradigm leads to a…

Computer Vision and Pattern Recognition · Computer Science 2025-08-26 Xinyu Wei , Guoli Yang , Jialu Zhou , Mingyue Yang , Leqian Li , Kedi Zhang , Chunping Qiu

Vision-Language Models (VLMs) have shown solid ability for multimodal understanding of both visual and language contexts. However, existing VLMs often face severe challenges of hallucinations, meaning that VLMs tend to generate responses…

Computer Vision and Pattern Recognition · Computer Science 2025-10-14 Jinjin Cao , Zhiyang Chen , Zijun Wang , Liyuan Ma , Weijian Luo , Guojun Qi

Current visual grounding models are either based on a Multimodal Large Language Model (MLLM) that performs auto-regressive decoding, which is slow and risks hallucinations, or on re-aligning an LLM with vision features to learn new special…

Computer Vision and Pattern Recognition · Computer Science 2025-12-15 Weitai Kang , Jason Kuen , Mengwei Ren , Zijun Wei , Yan Yan , Kangning Liu

While Multimodal Large Language Models (MLLMs) have demonstrated impressive capabilities in general visual understanding, they frequently falter in fine-grained perception tasks that require identifying tiny objects or discerning subtle…

Computer Vision and Pattern Recognition · Computer Science 2026-04-15 Jilong Zhu , Yang Feng

Vision-language process reward models (VL-PRMs) are increasingly used to score intermediate reasoning steps and rerank candidates under test-time scaling. However, they often function as black-box judges: a low step score may reflect a…

Computer Vision and Pattern Recognition · Computer Science 2026-05-12 Junxin Wang , Dai Guan , Weijie Qiu , Zhihang Li , Yongbo Gai , Zhengyi Yang , Mengyu Zhou , Erchao Zhao , Xiaoxi Jiang , Guanjun Jiang

The advancement of Large Vision-Language Models (LVLMs) requires precise local region-based reasoning that faithfully grounds the model's logic in actual visual evidence. However, existing datasets face limitations in scalability due to…

Computer Vision and Pattern Recognition · Computer Science 2026-04-24 Byeonggeuk Lim , Kyeonghyun Kim , JungMin Yun , YoungBin Kim

Recent Multimodal Large Language Models (MLLMs) excel on benchmark vision-language tasks, yet little is known about how input visual quality shapes their responses. Does higher perceptual quality of images already translate to better MLLM…

Computer Vision and Pattern Recognition · Computer Science 2025-06-19 Shuo Xing , Lanqing Guo , Hongyuan Hua , Seoyoung Lee , Peiran Li , Yufei Wang , Zhangyang Wang , Zhengzhong Tu

Manual annotation of high-quality visual question answering with grounding (VQA-G) datasets, which pair visual questions with evidential grounding, is crucial for advancing vision-language models (VLMs), but remains unscalable. Existing…

Computer Vision and Pattern Recognition · Computer Science 2026-04-21 Rongsheng Hu , Runwei Guan , Yicheng Di , Jiayu Bao , Yuan Liu

Large vision-language models (VLMs) often struggle to generate long and factual captions. However, traditional measures for hallucination and factuality are not well suited for evaluating longer, more diverse captions and in settings where…

Computer Vision and Pattern Recognition · Computer Science 2025-07-28 Monika Wysoczańska , Shyamal Buch , Anurag Arnab , Cordelia Schmid

Large Vision-Language Models (LVLMs) have achieved impressive performance in multimodal tasks, but they still suffer from hallucinations, i.e., generating content that is grammatically accurate but inconsistent with visual inputs. In this…

Computer Vision and Pattern Recognition · Computer Science 2026-03-09 Chenxi Li , Yichen Guo , Benfang Qian , Jinhao You , Kai Tang , Yaosong Du , Zonghao Zhang , Xiande Huang

Large Language Models (LLMs) are trained on vast and diverse internet corpora that often include inaccurate or misleading content. Consequently, LLMs can generate misinformation, making robust fact-checking essential. This review…

Advancements in Large Vision-Language Models (LVLMs) have demonstrated promising performance in a variety of vision-language tasks involving image-conditioned free-form text generation. However, growing concerns about hallucinations in…

Machine Learning · Computer Science 2025-03-03 Zhuohang Li , Chao Yan , Nicholas J. Jackson , Wendi Cui , Bo Li , Jiaxin Zhang , Bradley A. Malin

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

Existing Multimodal Large Language Models (MLLMs) for image forgery detection and localization predominantly operate under a text-centric Chain-of-Thought (CoT) paradigm. However, forcing these models to textually characterize imperceptible…

Computer Vision and Pattern Recognition · Computer Science 2026-02-17 Youqi Wang , Shen Chen , Haowei Wang , Rongxuan Peng , Taiping Yao , Shunquan Tan , Changsheng Chen , Bin Li , Shouhong Ding

Large Vision-Language Models (LVLMs) demonstrate remarkable capabilities in multimodal tasks, but visual object hallucination remains a persistent issue. It refers to scenarios where models generate inaccurate visual object-related…

Computer Vision and Pattern Recognition · Computer Science 2025-05-06 Liqiang Jing , Guiming Hardy Chen , Ehsan Aghazadeh , Xin Eric Wang , Xinya Du

Explorations in fine-tuning Vision-Language Models (VLMs), such as Low-Rank Adaptation (LoRA) from Parameter Efficient Fine-Tuning (PEFT), have made impressive progress. However, most approaches rely on explicit weight updates, overlooking…

Machine Learning · Computer Science 2025-12-30 Mingyuan Zhang , Yue Bai , Yifan Wang , Yiyang Huang , Yun Fu

Contemporary Vision-Language Models (VLMs) achieve strong performance on a wide range of tasks by pairing a vision encoder with a pre-trained language model, fine-tuned for visual-text inputs. Yet despite these gains, it remains unclear how…

Computer Vision and Pattern Recognition · Computer Science 2026-02-10 Lachin Naghashyar , Hunar Batra , Ashkan Khakzar , Philip Torr , Ronald Clark , Christian Schroeder de Witt , Constantin Venhoff

Recent progress in large-scale pre-training has led to the development of advanced vision-language models (VLMs) with remarkable proficiency in comprehending and generating multimodal content. Despite the impressive ability to perform…

Computer Vision and Pattern Recognition · Computer Science 2024-07-23 Hang Hua , Jing Shi , Kushal Kafle , Simon Jenni , Daoan Zhang , John Collomosse , Scott Cohen , Jiebo Luo

Multimodal fake news detection is crucial for mitigating adversarial misinformation. Existing methods, relying on static fusion or LLMs, face computational redundancy and hallucination risks due to weak visual foundations. To address this,…

Computer Vision and Pattern Recognition · Computer Science 2026-01-13 Weilin Zhou , Zonghao Ying , Chunlei Meng , Jiahui Liu , Hengyang Zhou , Quanchen Zou , Deyue Zhang , Dongdong Yang , Xiangzheng Zhang

Large Language Models (LLMs) have achieved unprecedented fluency but remain susceptible to "hallucinations" - the generation of factually incorrect or ungrounded content. This limitation is particularly critical in high-stakes domains where…

Computation and Language · Computer Science 2026-03-26 Md. Asraful Haque , Aasar Mehdi , Maaz Mahboob , Tamkeen Fatima