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Large foundation models trained on large-scale vision-language data can boost Open-Vocabulary Object Detection (OVD) via synthetic training data, yet the hand-crafted pipelines often introduce bias and overfit to specific prompts. We…

Computer Vision and Pattern Recognition · Computer Science 2025-09-22 Yang Zhou , Shiyu Zhao , Yuxiao Chen , Zhenting Wang , Can Jin , Dimitris N. Metaxas

Large Vision-Language Models (VLMs) rely on effective multimodal alignment between pre-trained vision encoders and Large Language Models (LLMs) to integrate visual and textual information. This paper presents a comprehensive analysis of…

Computer Vision and Pattern Recognition · Computer Science 2025-11-25 Shweta Mahajan , Hoang Le , Hyojin Park , Farzad Farhadzadeh , Munawar Hayat , Fatih Porikli

Recent advancements in Vision Language Models (VLMs) have demonstrated remarkable promise in generating visually grounded responses. However, their application in the medical domain is hindered by unique challenges. For instance, most VLMs…

Computer Vision and Pattern Recognition · Computer Science 2025-02-19 Lingxiao Luo , Bingda Tang , Xuanzhong Chen , Rong Han , Ting Chen

Video anomaly detection (VAD) has rapidly advanced by recent development of Vision-Language Models (VLMs). While these models offer superior zero-shot detection capabilities, their immense computational cost and unstable visual grounding…

Computer Vision and Pattern Recognition · Computer Science 2025-10-21 Yue Zheng , Xiufang Shi , Jiming Chen , Yuanchao Shu

Open-world video anomaly detection (OWVAD) aims to detect and explain abnormal events under different anomaly definitions, which is important for applications such as intelligent surveillance and live-streaming content moderation. Recent…

Computer Vision and Pattern Recognition · Computer Science 2026-04-10 Zihao Liu , Xiaoyu Wu , Wenna Li , Jianqin Wu , Linlin Yang

Vision-Language Models (VLMs), such as CLIP, have demonstrated remarkable zero-shot out-of-distribution (OOD) detection capabilities, vital for reliable AI systems. Despite this promising capability, a comprehensive understanding of (1) why…

Computer Vision and Pattern Recognition · Computer Science 2025-09-18 Yuxiao Lee , Xiaofeng Cao , Wei Ye , Jiangchao Yao , Jingkuan Song , Heng Tao Shen

The collection and detection of video anomaly data has long been a challenging problem due to its rare occurrence and spatio-temporal scarcity. Existing video anomaly detection (VAD) methods under perform in open-world scenarios. Key…

Computer Vision and Pattern Recognition · Computer Science 2026-03-24 Zunkai Dai , Ke Li , Jiajia Liu , Jie Yang , Yuanyuan Qiao

CCTV safety monitoring demands anomaly detectors combine reliable clip-level accuracy with predictable per-clip latency despite weak supervision. This work investigates compact vision-language models (VLMs) as practical detectors for this…

Computer Vision and Pattern Recognition · Computer Science 2026-03-17 Kirill Borodin , Kirill Kondrashov , Nikita Vasiliev , Ksenia Gladkova , Inna Larina , Mikhail Gorodnichev , Grach Mkrtchian

Vision-language models (VLMs) frequently generate hallucinated content plausible but incorrect claims about image content. We propose a training-free self-correction framework enabling VLMs to iteratively refine responses through…

Computer Vision and Pattern Recognition · Computer Science 2025-12-11 Kassoum Sanogo , Renzo Ardiccioni

3D Visual Grounding (3DVG) focuses on locating objects in 3D scenes based on natural language descriptions, serving as a fundamental task for embodied AI and robotics. Recent advances in Multi-modal Large Language Models (MLLMs) have…

Computer Vision and Pattern Recognition · Computer Science 2025-12-02 Beining Xu , Siting Zhu , Zhao Jin , Junxian Li , Hesheng Wang

In the field of Class Incremental Object Detection (CIOD), creating models that can continuously learn like humans is a major challenge. Pseudo-labeling methods, although initially powerful, struggle with multi-scenario incremental learning…

Computer Vision and Pattern Recognition · Computer Science 2024-05-10 Junsu Kim , Yunhoe Ku , Jihyeon Kim , Junuk Cha , Seungryul Baek

Video Anomaly Detection (VAD) automates the identification of unusual events, such as security threats in surveillance videos. In real-world applications, VAD models must effectively operate in cross-domain settings, identifying rare…

Computer Vision and Pattern Recognition · Computer Science 2024-08-12 Yashika Jain , Ali Dabouei , Min Xu

Video anomaly detection (VAD) has been intensively studied for years because of its potential applications in intelligent video systems. Existing unsupervised VAD methods tend to learn normality from training sets consisting of only normal…

Computer Vision and Pattern Recognition · Computer Science 2023-01-10 Mengyang Zhao , Xinhua Zeng , Yang Liu , Jing Liu , Di Li , Xing Hu , Chengxin Pang

Open-vocabulary object detection (OVOD) aims to detect the objects beyond the set of classes observed during training. This work introduces a straightforward and efficient strategy that utilizes pre-trained vision-language models (VLM),…

Computer Vision and Pattern Recognition · Computer Science 2024-04-02 Shilin Xu , Xiangtai Li , Size Wu , Wenwei Zhang , Yunhai Tong , Chen Change Loy

Despite recent successes, LVLMs or Large Vision Language Models are prone to hallucinating details like objects and their properties or relations, limiting their real-world deployment. To address this and improve their robustness, we…

Computer Vision and Pattern Recognition · Computer Science 2024-08-21 Yassine Ouali , Adrian Bulat , Brais Martinez , Georgios Tzimiropoulos

Training end-to-end policies from image data to directly predict navigation actions for robotic systems has proven inherently difficult. Existing approaches often suffer from either the sim-to-real gap during policy transfer or a limited…

Robotics · Computer Science 2026-03-17 Lazar Milikic , Manthan Patel , Jonas Frey

Understanding relationships between objects is central to visual intelligence, with applications in embodied AI, assistive systems, and scene understanding. Yet, most visual relationship detection (VRD) models rely on a fixed predicate set,…

Computer Vision and Pattern Recognition · Computer Science 2025-06-09 Shanmukha Vellamcheti , Sanjoy Kundu , Sathyanarayanan N. Aakur

Pre-trained vision-language models (VLMs) are highly adaptable to various downstream tasks through few-shot learning, making prompt-based anomaly detection a promising approach. Traditional methods depend on human-crafted prompts that…

Computer Vision and Pattern Recognition · Computer Science 2024-09-12 Pi-Wei Chen , Jerry Chun-Wei Lin , Jia Ji , Feng-Hao Yeh , Zih-Ching Chen , Chao-Chun Chen

Video anomaly detection (VAD) remains a challenging task in the pattern recognition community due to the ambiguity and diversity of abnormal events. Existing deep learning-based VAD methods usually leverage proxy tasks to learn the normal…

Computer Vision and Pattern Recognition · Computer Science 2022-11-03 Mengyang Zhao , Yang Liu , Jing Li , Xinhua Zeng

Video anomaly detection (VAD) plays a vital role in real-world applications such as security surveillance, autonomous driving, and industrial monitoring. Recent advances in large pre-trained models have opened new opportunities for…

Computer Vision and Pattern Recognition · Computer Science 2025-11-24 He Huang , Zixuan Hu , Dongxiao Li , Yao Xiao , Ling-Yu Duan