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Hallucinations in vision-language models pose a significant challenge to their reliability, particularly in the generation of long captions. Current methods fall short of accurately identifying and mitigating these hallucinations. To…

计算机视觉与模式识别 · 计算机科学 2024-10-07 Minchan Kim , Minyeong Kim , Junik Bae , Suhwan Choi , Sungkyung Kim , Buru Chang

Vision-Language Models (VLMs) often hallucinate objects that are not present in the input image. We identify a contributing cause of this behavior, which we term spatial credit collapse: in early transformer layers, hidden-state activation…

计算机视觉与模式识别 · 计算机科学 2026-03-05 Niamul Hassan Samin , Md Arifur Rahman , Abdullah Ibne Hanif Arean , Juena Ahmed Noshin , Md Ashikur Rahman

Large Vision-Language Models (LVLMs) have achieved impressive progress in multimodal reasoning, yet they remain prone to object hallucinations, generating descriptions of objects that are not present in the input image. Recent approaches…

计算机视觉与模式识别 · 计算机科学 2026-04-07 Sohyeon Kim , Sang Yeon Yoon , Kyeongbo Kong

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…

计算机视觉与模式识别 · 计算机科学 2025-10-14 Jinjin Cao , Zhiyang Chen , Zijun Wang , Liyuan Ma , Weijian Luo , Guojun Qi

Vision-language models (VLMs) achieve strong benchmark results, yet can exhibit systematic perceptual weaknesses: structured, large changes to pixel values can cause confident yet nonsensical predictions, even when the underlying scene…

计算机视觉与模式识别 · 计算机科学 2026-03-09 Nicoleta-Nina Basoc , Adrian Cosma , Emilian Radoi

Multimodal Large Language Models (MLLMs) have made significant strides by combining visual recognition and language understanding to generate content that is both coherent and contextually accurate. However, MLLMs continue to struggle with…

计算机视觉与模式识别 · 计算机科学 2025-07-22 Haoran Zhou , Zihan Zhang , Hao Chen

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…

计算机视觉与模式识别 · 计算机科学 2025-11-14 Zhihui Guo , Xin Man , Hui Xu , Jie Shao , Zhiguo Jiang , Xianchao Zhang , Heng Tao Shen

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…

计算与语言 · 计算机科学 2026-04-02 Junjie Hu , Gang Tu , ShengYu Cheng , Jinxin Li , Jinting Wang , Rui Chen , Zhilong Zhou , Dongbo Shan

Hallucinations remain a persistent challenge for vision-language models (VLMs), which often describe nonexistent objects or fabricate facts. Existing detection methods typically operate after text generation, making intervention both costly…

计算机视觉与模式识别 · 计算机科学 2026-03-06 Sai Akhil Kogilathota , Sripadha Vallabha E G , Luzhe Sun , Jiawei Zhou

Large Vision-Language Models (LVLMs) bridge the gap between visual and linguistic modalities, demonstrating strong potential across a variety of domains. However, despite significant progress, LVLMs still suffer from severe hallucination…

计算机视觉与模式识别 · 计算机科学 2025-12-23 Ruiqi Ma , Yu Yan , Chunhong Zhang , Minghao Yin , XinChao Liu , Zhihong Jin , Zheng Hu

Large Vision-Language Models (LVLMs) are an extension of Large Language Models (LLMs) that facilitate processing both image and text inputs, expanding AI capabilities. However, LVLMs struggle with object hallucinations due to their reliance…

计算与语言 · 计算机科学 2024-08-12 Avshalom Manevich , Reut Tsarfaty

Large Vision-Language Models (LVLMs) still struggle with vision hallucination, where generated responses are inconsistent with the visual input. Existing methods either rely on large-scale annotated data for fine-tuning, which incurs…

计算机视觉与模式识别 · 计算机科学 2026-04-21 Yu Zhang , Chuyang Sun , Kehai Chen , Xuefeng Bai , Yang Xiang , Min Zhang

Contrastive decoding strategies are widely used to mitigate object hallucinations in multimodal large language models (MLLMs). By reducing over-reliance on language priors, these strategies ensure that generated content remains closely…

计算机视觉与模式识别 · 计算机科学 2025-05-28 Hao Yin , Guangzong Si , Zilei Wang

Large vision-language models (LVLMs) often hallucinate when language priors dominate weak or ambiguous visual evidence. Existing contrastive decoding methods mitigate this problem by comparing predictions from the original image with those…

计算机视觉与模式识别 · 计算机科学 2026-05-15 Tian Qin , Junzhe Chen , Yuqing Shi , Tianshu Zhang , Qiang Ju , Lijie Wen

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…

计算机视觉与模式识别 · 计算机科学 2024-12-23 Dexter Neo , Tsuhan Chen

Reinforcement Fine-Tuning (RFT) on flow-based models is crucial for preference alignment. However, they often introduce visual hallucinations like over-optimized details and semantic misalignment. This work preliminarily explores why visual…

计算机视觉与模式识别 · 计算机科学 2026-02-04 Xiaofeng Tan , Jun Liu , Yuanting Fan , Bin-Bin Gao , Xi Jiang , Xiaochen Chen , Jinlong Peng , Chengjie Wang , Hongsong Wang , Feng Zheng

Vision-Language Models (VLMs) are increasingly used as perceptual modules for visual content reasoning, including through captioning and DeepFake detection. In this work, we expose a critical vulnerability of VLMs when exposed to subtle,…

计算机视觉与模式识别 · 计算机科学 2025-08-14 Jordan Vice , Naveed Akhtar , Yansong Gao , Richard Hartley , Ajmal Mian

Recent advancements in Multimodal Large Language Models (MLLMs) have enabled them to effectively integrate vision and language, addressing a variety of downstream tasks. However, despite their significant success, these models still exhibit…

计算机视觉与模式识别 · 计算机科学 2025-06-10 Zixian Gao , Chao Yang , Zhanhui Zhou , Xing Xu , Chaochao Lu

Large Vision-Language Models (LVLMs) often produce responses that misalign with factual information, a phenomenon known as hallucinations. While hallucinations are well-studied, the exact causes behind them remain underexplored. In this…

计算机视觉与模式识别 · 计算机科学 2025-03-07 Sreyan Ghosh , Chandra Kiran Reddy Evuru , Sonal Kumar , Utkarsh Tyagi , Oriol Nieto , Zeyu Jin , Dinesh Manocha

Automatic Speech Recognition (ASR) error correction aims to correct recognition errors while preserving accurate text. Although traditional approaches demonstrate moderate effectiveness, LLMs offer a paradigm that eliminates the need for…

计算与语言 · 计算机科学 2025-12-24 Yangui Fang , Baixu Chen , Jing Peng , Xu Li , Yu Xi , Chengwei Zhang , Guohui Zhong