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Localizing unusual activities, such as human errors or surveillance incidents, in videos holds practical significance. However, current video understanding models struggle with localizing these unusual events likely because of their…

计算机视觉与模式识别 · 计算机科学 2025-03-24 Hasnat Md Abdullah , Tian Liu , Kangda Wei , Shu Kong , Ruihong Huang

Recognizing and localizing events in videos is a fundamental task for video understanding. Since events may occur in auditory and visual modalities, multimodal detailed perception is essential for complete scene comprehension. Most previous…

计算机视觉与模式识别 · 计算机科学 2022-07-13 Jiashuo Yu , Ying Cheng , Rui-Wei Zhao , Rui Feng , Yuejie Zhang

In recent years, multi-view subspace learning has been garnering increasing attention. It aims to capture the inner relationships of the data that are collected from multiple sources by learning a unified representation. In this way,…

计算机视觉与模式识别 · 计算机科学 2022-12-07 Shizhen Chang , Michael Kopp , Pedram Ghamisi

Accurate prediction of human behavior is crucial for AI systems to effectively support real-world applications, such as autonomous robots anticipating and assisting with human tasks. Real-world scenarios frequently present challenges such…

人机交互 · 计算机科学 2025-07-21 Kojiro Takeyama , Yimeng Liu , Misha Sra

Video Anomaly Detection (VAD) is crucial for applications such as security surveillance and autonomous driving. However, existing VAD methods provide little rationale behind detection, hindering public trust in real-world deployments. In…

计算机视觉与模式识别 · 计算机科学 2024-07-23 Yuchen Yang , Kwonjoon Lee , Behzad Dariush , Yinzhi Cao , Shao-Yuan Lo

In this paper, we propose a method for real-time anomaly detection and localization in crowded scenes. Each video is defined as a set of non-overlapping cubic patches, and is described using two local and global descriptors. These…

计算机视觉与模式识别 · 计算机科学 2015-11-24 Mohammad Sabokrou , Mahmood Fathy , Mojtaba Hosseini , Reinhard Klette

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…

计算机视觉与模式识别 · 计算机科学 2023-01-10 Mengyang Zhao , Xinhua Zeng , Yang Liu , Jing Liu , Di Li , Xing Hu , Chengxin Pang

VERSA provides a general-purpose framework for defining and recognizing events in live or recorded surveillance video streams. The approach for event recognition in VERSA is using a declarative logic language to define the spatial and…

计算机视觉与模式识别 · 计算机科学 2010-07-23 Stephen O'Hara

Accounting for the increased concern for public safety, automatic abnormal event detection and recognition in a surveillance scene is crucial. It is a current open study subject because of its intricacy and utility. The identification of…

计算机视觉与模式识别 · 计算机科学 2023-11-27 Anikeit Sethi , Krishanu Saini , Sai Mounika Mididoddi

Recent multi-modal audio-language models (ALMs) excel at text-audio retrieval but struggle with frame-wise audio understanding. Prior works use temporal-aware labels or unsupervised training to improve frame-wise capabilities, but they…

Event-based vision, characterized by low redundancy, focus on dynamic motion, and inherent privacy-preserving properties, naturally fits the demands of video anomaly detection (VAD). However, the absence of dedicated event-stream anomaly…

计算机视觉与模式识别 · 计算机科学 2026-03-27 Peng Wu , Yuting Yan , Guansong Pang , Yujia Sun , Qingsen Yan , Peng Wang , Yanning Zhang

Video Anomaly Detection (VAD) has traditionally been framed as binary classification or outlier detection, providing neither interpretable reasoning nor precise spatial localization of anomalous events. While Vision-Language Models (VLMs)…

计算机视觉与模式识别 · 计算机科学 2026-05-06 Sakshi Agarwal , Aishik Konwer , Ankit Parag Shah

Video Large Language Models (VideoLLMs) exhibit various types of hallucinations. Existing research has primarily focused on hallucinations involving the presence of events, objects, and scenes in videos, while largely neglecting event…

计算机视觉与模式识别 · 计算机科学 2026-01-16 Zefan Zhang , Kehua Zhu , Shijie Jiang , Hongyuan Lu , Shengkai Sun , Tian Bai

Large vision-language models (LVLMs) are markedly proficient in deriving visual representations guided by natural language. Recent explorations have utilized LVLMs to tackle zero-shot visual anomaly detection (VAD) challenges by pairing…

计算机视觉与模式识别 · 计算机科学 2025-04-08 Jiaqi Zhu , Shaofeng Cai , Fang Deng , Beng Chin Ooi , Junran Wu

Recent advances in Multi-Modal Large Language Models (M-LLMs) show promising results in video reasoning. Popular Multi-Modal Large Language Model (M-LLM) frameworks usually apply naive uniform sampling to reduce the number of video frames…

计算机视觉与模式识别 · 计算机科学 2025-03-28 Kai Hu , Feng Gao , Xiaohan Nie , Peng Zhou , Son Tran , Tal Neiman , Lingyun Wang , Mubarak Shah , Raffay Hamid , Bing Yin , Trishul Chilimbi

Video Anomaly Detection (VAD) is critical for surveillance and public safety. However, existing benchmarks are limited to either frame-level or video-level tasks, restricting a holistic view of model generalization. This work first…

计算机视觉与模式识别 · 计算机科学 2025-09-17 Seoik Jung , Taekyung Song , Joshua Jordan Daniel , JinYoung Lee , SungJun Lee

Video-Language Models (VLMs), powered by the advancements in Large Language Models (LLMs), are charting new frontiers in video understanding. A pivotal challenge is the development of an efficient method to encapsulate video content into a…

计算机视觉与模式识别 · 计算机科学 2024-02-21 Jiaqi Xu , Cuiling Lan , Wenxuan Xie , Xuejin Chen , Yan Lu

Recently, integrating visual foundation models into large language models (LLMs) to form video understanding systems has attracted widespread attention. Most of the existing models compress diverse semantic information within the whole…

计算机视觉与模式识别 · 计算机科学 2024-09-11 Dingxin Cheng , Mingda Li , Jingyu Liu , Yongxin Guo , Bin Jiang , Qingbin Liu , Xi Chen , Bo Zhao

This paper presents VideoLoom, a unified Video Large Language Model (Video LLM) for joint spatial-temporal understanding. To facilitate the development of fine-grained spatial and temporal localization capabilities, we curate LoomData-8.7k,…

计算机视觉与模式识别 · 计算机科学 2026-01-13 Jiapeng Shi , Junke Wang , Zuyao You , Bo He , Zuxuan Wu

We propose a lightweight and accurate method for detecting anomalies in videos. Existing methods used multiple-instance learning (MIL) to determine the normal/abnormal status of each segment of the video. Recent successful researches argue…

计算机视觉与模式识别 · 计算机科学 2022-09-15 Yudai Watanabe , Makoto Okabe , Yasunori Harada , Naoji Kashima