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Detecting anomalous hazards in visual data, particularly in video streams, is a critical challenge in autonomous driving. Existing models often struggle with unpredictable, out-of-label hazards due to their reliance on predefined object…

Computer Vision and Pattern Recognition · Computer Science 2025-04-21 Shashank Shriram , Srinivasa Perisetla , Aryan Keskar , Harsha Krishnaswamy , Tonko Emil Westerhof Bossen , Andreas Møgelmose , Ross Greer

Backdoor attacks are a significant threat to large language models (LLMs), often embedded via public checkpoints, yet existing defenses rely on impractical assumptions about trigger settings. To address this challenge, we propose…

Computation and Language · Computer Science 2026-05-14 Liang Lin , Miao Yu , Moayad Aloqaily , Zhenhong Zhou , Kun Wang , Linsey Pang , Prakhar Mehrotra , Qingsong Wen

Often, deep network models are purely inductive during training and while performing inference on unseen data. Thus, when such models are used for predictions, it is well known that they often fail to capture the semantic information and…

Computer Vision and Pattern Recognition · Computer Science 2023-10-09 Zhu Wang , Sourav Medya , Sathya N. Ravi

We revisit the likelihood ratio between a pretrained large language model (LLM) and its finetuned variant as a criterion for out-of-distribution (OOD) detection. The intuition behind such a criterion is that, the pretrained LLM has the…

Computation and Language · Computer Science 2025-03-07 Andi Zhang , Tim Z. Xiao , Weiyang Liu , Robert Bamler , Damon Wischik

Large language models have become increasingly prominent, also signaling a shift towards multimodality as the next frontier in artificial intelligence, where their embeddings are harnessed as prompts to generate textual content.…

Computer Vision and Pattern Recognition · Computer Science 2024-08-27 Jiachen Sun , Changsheng Wang , Jiongxiao Wang , Yiwei Zhang , Chaowei Xiao

Vision-Language Models (VLMs) extend large language models with visual reasoning, but their multimodal design also introduces new, underexplored vulnerabilities. Existing multimodal red-teaming methods largely rely on brittle templates,…

Cryptography and Security · Computer Science 2026-05-27 Qilin Liao , Anamika Lochab , Ruqi Zhang

Recognizing out-of-distribution (OOD) samples is critical for machine learning systems deployed in the open world. The vast majority of OOD detection methods are driven by a single modality (e.g., either vision or language), leaving the…

Computer Vision and Pattern Recognition · Computer Science 2022-11-28 Yifei Ming , Ziyang Cai , Jiuxiang Gu , Yiyou Sun , Wei Li , Yixuan Li

Recent advances in Large Visual Language Models (LVLMs) have demonstrated impressive performance across various vision-language tasks by leveraging large-scale image-text pretraining and instruction tuning. However, the security…

Computer Vision and Pattern Recognition · Computer Science 2025-11-14 Zihan Wang , Guansong Pang , Wenjun Miao , Jin Zheng , Xiao Bai

Vision-Language Models (VLMs) combine visual and textual understanding, rendering them well-suited for diverse tasks like generating image captions and answering visual questions across various domains. However, these capabilities are built…

Computer Vision and Pattern Recognition · Computer Science 2024-08-20 Simone Caldarella , Massimiliano Mancini , Elisa Ricci , Rahaf Aljundi

Model editing aims to correct outdated or erroneous knowledge in large models without costly retraining. Recent research discovered that the mid-layer representation of the subject's final token in a prompt has a strong influence on factual…

Computer Vision and Pattern Recognition · Computer Science 2025-01-24 Qizhou Chen , Taolin Zhang , Chengyu Wang , Xiaofeng He , Dakan Wang , Tingting Liu

Multimodal Vision Language Models (VLMs) have emerged as a transformative topic at the intersection of computer vision and natural language processing, enabling machines to perceive and reason about the world through both visual and textual…

Computer Vision and Pattern Recognition · Computer Science 2025-04-08 Zongxia Li , Xiyang Wu , Hongyang Du , Fuxiao Liu , Huy Nghiem , Guangyao Shi

Vision-language models (VLMs) may memorize undesirable information from training data, motivating growing interest in machine unlearning. In this work, we present the first systematic survey and robustness analysis of VLM unlearning. We…

Computer Vision and Pattern Recognition · Computer Science 2026-05-27 Yujie Lin , Kaidi Jia , Jiayao Ma , Chengyi Yang , Jinsong Su

Recent advances in vision-language models (VLMs) have significantly enhanced the visual grounding task, which involves locating objects in an image based on natural language queries. Despite these advancements, the security of VLM-based…

Computer Vision and Pattern Recognition · Computer Science 2026-03-24 Junxian Li , Beining Xu , Simin Chen , Jiatong Li , Jingdi Lei , Haodong Zhao , Di Zhang

The emergence of vision language models (VLMs) comes with increased safety concerns, as the incorporation of multiple modalities heightens vulnerability to attacks. Although VLMs can be built upon LLMs that have textual safety alignment, it…

Cryptography and Security · Computer Science 2025-02-18 Qin Liu , Fei Wang , Chaowei Xiao , Muhao Chen

The growing success of Vision-Language-Action (VLA) models stems from the promise that pretrained Vision-Language Models (VLMs) can endow agents with transferable world knowledge and vision-language (VL) grounding, laying a foundation for…

Machine Learning · Computer Science 2025-10-30 Nikita Kachaev , Mikhail Kolosov , Daniil Zelezetsky , Alexey K. Kovalev , Aleksandr I. Panov

Large Vision-Language Models (LVLMs) have shown remarkable capabilities across a wide range of multimodal tasks. However, their integration of visual inputs introduces expanded attack surfaces, thereby exposing them to novel security…

Computation and Language · Computer Science 2025-05-29 Juan Ren , Mark Dras , Usman Naseem

Instruction tuning enhances large vision-language models (LVLMs) but increases their vulnerability to backdoor attacks due to their open design. Unlike prior studies in static settings, this paper explores backdoor attacks in LVLM…

Computer Vision and Pattern Recognition · Computer Science 2024-12-17 Siyuan Liang , Jiawei Liang , Tianyu Pang , Chao Du , Aishan Liu , Mingli Zhu , Xiaochun Cao , Dacheng Tao

Despite inheriting security measures from underlying language models, Vision-Language Models (VLMs) may still be vulnerable to safety alignment issues. Through empirical analysis, we uncover two critical findings: scenario-matched images…

Computer Vision and Pattern Recognition · Computer Science 2024-12-02 Shuyang Hao , Bryan Hooi , Jun Liu , Kai-Wei Chang , Zi Huang , Yujun Cai

Vision Large Language Models (VLLMs) are increasingly deployed to offer advanced capabilities on inputs comprising both text and images. While prior research has shown that adversarial attacks can transfer from open-source to proprietary…

Computer Vision and Pattern Recognition · Computer Science 2025-05-05 Kai Hu , Weichen Yu , Li Zhang , Alexander Robey , Andy Zou , Chengming Xu , Haoqi Hu , Matt Fredrikson

3D Vision-Language Models (VLMs), such as PointLLM and GPT4Point, have shown strong reasoning and generalization abilities in 3D understanding tasks. However, their adversarial robustness remains largely unexplored. Prior work in 2D VLMs…

Computer Vision and Pattern Recognition · Computer Science 2026-01-13 Chao Liu , Ngai-Man Cheung