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Mitigating object hallucination in large vision-language models (LVLMs) is critical to their safe deployment. Existing methods either are restricted to specific decoding methods, or demand sophisticated modifications to visual inputs, or…

Computer Vision and Pattern Recognition · Computer Science 2025-07-11 Xixi Liu , Ailin Deng , Christopher Zach

Large vision-language models (LVLMs) achieve impressive performance on multimodal tasks but often suffer from hallucination, and confidently describe objects or attributes not present in the image. Current training-free interventions…

Computer Vision and Pattern Recognition · Computer Science 2026-04-13 Mehrdad Fazli , Bowen Wei , Ahmet Sari , Ziwei Zhu

Existing vision-language models (VLMs) often suffer from visual hallucination, where the generated responses contain inaccuracies that are not grounded in the visual input. Efforts to address this issue without model finetuning primarily…

Computer Vision and Pattern Recognition · Computer Science 2026-04-10 Shunqi Mao , Chaoyi Zhang , Weidong Cai

3D visual grounding aims to localize the unique target described by natural languages in 3D scenes. The significant gap between 3D and language modalities makes it a notable challenge to distinguish multiple similar objects through the…

Computer Vision and Pattern Recognition · Computer Science 2025-08-18 Feng Xiao , Hongbin Xu , Guocan Zhao , Wenxiong Kang

Large audio-language models (LALMs) generalize across speech, sound, and music, but unified decoders can exhibit a \emph{temporal smoothing bias}: transient acoustic cues may be underutilized in favor of temporally smooth context that is…

Sound · Computer Science 2026-04-20 Yanda Li , Yuhan Liu , Zirui Song , Yunchao Wei , Martin Takáč , Salem Lahlou

Large language models and vision transformers have demonstrated impressive zero-shot capabilities, enabling significant transferability in downstream tasks. The fusion of these models has resulted in multi-modal architectures with enhanced…

Computer Vision and Pattern Recognition · Computer Science 2025-01-07 Andrés Villa , Juan León Alcázar , Motasem Alfarra , Vladimir Araujo , Alvaro Soto , Bernard Ghanem

Recent advancements in multimodal large reasoning models (MLRMs) have significantly improved performance in visual question answering. However, we observe that transition words (e.g., because, however, and wait) are closely associated with…

Computer Vision and Pattern Recognition · Computer Science 2026-03-17 Zhongxing Xu , Zhonghua Wang , Zhe Qian , Dachuan Shi , Feilong Tang , Ming Hu , Shiyan Su , Xiaocheng Zou , Wei Feng , Dwarikanath Mahapatra , Yifan Peng , Mingquan Lin , Zongyuan Ge

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

An embodied AI assistant operating on egocentric video must integrate spatial cues across time - for instance, determining where an object A, glimpsed a few moments ago lies relative to an object B encountered later. We introduce…

Computer Vision and Pattern Recognition · Computer Science 2025-06-02 Sahithya Ravi , Gabriel Sarch , Vibhav Vineet , Andrew D. Wilson , Balasaravanan Thoravi Kumaravel

Large Vision-Language Models (LVLMs) face a tug-of-war between powerful linguistic priors and visual evidence, often leading to \emph{semantic drift}: a progressive detachment from the input image that can abruptly emerge at specific…

Computer Vision and Pattern Recognition · Computer Science 2026-03-17 Jiahe Chen , Jiaying He , Qiyuan Chen , Qian Shao , Jiahe Ying , Hongxia Xu , Jintai Chen , Jianwei Zheng , Jian Wu

Hallucination remains a fundamental challenge in vision-language models (VLMs), where autoregressive generation may produce linguistically plausible yet physically inconsistent or visually ungrounded responses due to likelihood maximization…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Qinwu Xu

Multimodal large language models (MLLMs) have achieved remarkable progress in vision-language reasoning, yet they remain vulnerable to hallucination, where generated content deviates from visual evidence. Existing mitigation strategies…

Computer Vision and Pattern Recognition · Computer Science 2026-03-02 Xingyu Zhu , Kesen Zhao , Liang Yi , Shuo Wang , Zhicai Wang , Beier Zhu , Hanwang Zhang

Vision-Language Models (VLMs) exhibit systematic bias toward visual illusions, recalling memorized facts rather than perceiving actual visual differences. This paper presents a training-free framework for the 5th DataCV Challenge Task 1 at…

Computer Vision and Pattern Recognition · Computer Science 2026-05-12 Junli Zha , Jiahui Wang , Xinkai Lu , Jinbo Wang

Despite their remarkable progress in multimodal understanding tasks, large vision language models (LVLMs) often suffer from "hallucinations", generating texts misaligned with the visual context. Existing methods aimed at reducing…

Computer Vision and Pattern Recognition · Computer Science 2025-10-17 Sreetama Sarkar , Yue Che , Alex Gavin , Peter A. Beerel , Souvik Kundu

Large Language Models have rapidly advanced in their ability to interpret and generate natural language. In enterprise settings, they are frequently augmented with closed-source domain knowledge to deliver more contextually informed…

Computation and Language · Computer Science 2025-12-03 Tanmay Agrawal

Diffusion priors have recently demonstrated strong capability in enhancing the quality of sparse-view 3D reconstruction by augmenting training views at novel viewpoints, but they inevitably introduce hallucinated content -- artifacts…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Xi Liu , Weiwei Sun , Zhou Ren , Chris Broaddus , Siyu Huang , Laurent Guigues

Large Vision-Language Models (LVLMs) typically process visual inputs as a prefix to the language decoder. As the model autoregressively generates text, this initial visual information inevitably undergoes "dilution" leading the model to…

Computer Vision and Pattern Recognition · Computer Science 2026-05-20 Zhengtao Zou , Ya Gao , Jiarui Guan , Bin Li , Pekka Marttinen

3D CT analysis spans a continuum from low-level perception to high-level clinical understanding. Existing 3D-oriented analysis methods adopt either isolated task-specific modeling or task-agnostic end-to-end paradigms to produce one-hop…

Computer Vision and Pattern Recognition · Computer Science 2026-03-10 Ziyue Wang , Linghan Cai , Chang Han Low , Haofeng Liu , Junde Wu , Jingyu Wang , Rui Wang , Lei Song , Jiang Bian , Jingjing Fu , Yueming Jin

Large language models (LLMs) often generate fluent but factually incorrect statements despite having access to relevant evidence, a failure mode rooted in how they allocate attention between contextual and parametric knowledge.…

Computation and Language · Computer Science 2025-12-02 Kenji Sahay , Snigdha Pandya , Rohan Nagale , Anna Lin , Shikhar Shiromani , Kevin Zhu , Dev Sunishchal

While large language models have demonstrated exceptional performance across a wide range of tasks, they remain susceptible to hallucinations -- generating plausible yet factually incorrect contents. Existing methods to mitigating such risk…

Computation and Language · Computer Science 2025-09-16 Yurui Chang , Bochuan Cao , Lu Lin