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Anomaly detection in videos aims at reporting anything that does not conform the normal behaviour or distribution. However, due to the sparsity of abnormal video clips in real life, collecting annotated data for supervised learning is…

计算机视觉与模式识别 · 计算机科学 2019-10-22 Yiwei Lu , Mahesh Kumar Krishna Reddy , Seyed shahabeddin Nabavi , Yang Wang

Surveillance videos are able to capture a variety of realistic anomalies. In this paper, we propose to learn anomalies by exploiting both normal and anomalous videos. To avoid annotating the anomalous segments or clips in training videos,…

计算机视觉与模式识别 · 计算机科学 2019-02-15 Waqas Sultani , Chen Chen , Mubarak Shah

Video Anomaly Detection (VAD) is a fundamental challenge in computer vision, particularly due to the open-set nature of anomalies. While recent training-free approaches utilizing Vision-Language Models (VLMs) have shown promise, they…

计算机视觉与模式识别 · 计算机科学 2026-04-06 Lokman Bekit , Hamza Karim , Nghia T Nguyen , Yasin Yilmaz

We tackle the complex problem of detecting and recognising anomalies in surveillance videos at the frame level, utilising only video-level supervision. We introduce the novel method AnomalyCLIP, the first to combine Large Language and…

计算机视觉与模式识别 · 计算机科学 2023-10-05 Luca Zanella , Benedetta Liberatori , Willi Menapace , Fabio Poiesi , Yiming Wang , Elisa Ricci

The considerable significance of Anomaly Detection (AD) problem has recently drawn the attention of many researchers. Consequently, the number of proposed methods in this research field has been increased steadily. AD strongly correlates…

计算机视觉与模式识别 · 计算机科学 2021-03-03 Bahram Mohammadi , Mahmood Fathy , Mohammad Sabokrou

The advancement of generation models has led to the emergence of highly realistic artificial intelligence (AI)-generated videos. Malicious users can easily create non-existent videos to spread false information. This letter proposes an…

计算机视觉与模式识别 · 计算机科学 2024-03-26 Jianfa Bai , Man Lin , Gang Cao

Vision-and-language navigation (VLN) is a challenging task that requires an agent to navigate in real-world environments by understanding natural language instructions and visual information received in real-time. Prior works have…

机器人学 · 计算机科学 2021-01-20 Ting Wang , Zongkai Wu , Donglin Wang

Surveillance footage can catch a wide range of realistic anomalies. This research suggests using a weakly supervised strategy to avoid annotating anomalous segments in training videos, which is time consuming. In this approach only video…

计算机视觉与模式识别 · 计算机科学 2022-06-07 Kapil Deshpande , Narinder Singh Punn , Sanjay Kumar Sonbhadra , Sonali Agarwal

Video anomaly detection (VAD) is a crucial task in video analysis and surveillance within computer vision. Currently, VAD is gaining attention with memory techniques that store the features of normal frames. The stored features are utilized…

计算机视觉与模式识别 · 计算机科学 2024-11-26 Sunghyun Ahn , Youngwan Jo , Kijung Lee , Sanghyun Park

Video anomaly detection is one of the hot research topics in computer vision nowadays, as abnormal events contain a high amount of information. Anomalies are one of the main detection targets in surveillance systems, usually needing…

计算机视觉与模式识别 · 计算机科学 2021-11-03 Mohammad Baradaran , Robert Bergevin

Video Anomaly Detection (VAD) finds widespread applications in security surveillance, traffic monitoring, industrial monitoring, and healthcare. Despite extensive research efforts, there remains a lack of concise reviews that provide…

计算机视觉与模式识别 · 计算机科学 2024-11-01 Liyun Zhu , Lei Wang , Arjun Raj , Tom Gedeon , Chen Chen

Video Anomaly Detection (VAD) remains a fundamental yet formidable task in the video understanding community, with promising applications in areas such as information forensics and public safety protection. Due to the rarity and diversity…

计算机视觉与模式识别 · 计算机科学 2025-03-25 Yang Liu , Hongjin Wang , Zepu Wang , Xiaoguang Zhu , Jing Liu , Peng Sun , Rui Tang , Jianwei Du , Victor C. M. Leung , Liang Song

Vision-language models (VLMs) have recently emerged as a promising paradigm for video anomaly detection (VAD) due to their strong visual reasoning ability and natural language-based explainability. In this paper, we aim to address a key…

计算机视觉与模式识别 · 计算机科学 2026-05-15 Mitchell Piehl , Muchao Ye

Video Anomaly Detection (VAD), which aims to detect anomalies that deviate from expectation, has attracted increasing attention in recent years. Existing advancements in VAD primarily focus on model architectures and training strategies,…

计算机视觉与模式识别 · 计算机科学 2025-11-03 Zihao Liu , Xiaoyu Wu , Wenna Li , Linlin Yang , Shengjin Wang

Existing deepfake detectors face several challenges in achieving robustness and generalization. One of the primary reasons is their limited ability to extract relevant information from forgery videos, especially in the presence of various…

计算机视觉与模式识别 · 计算机科学 2023-05-01 Zhiyuan Yan , Peng Sun , Yubo Lang , Shuo Du , Shanzhuo Zhang , Wei Wang , Lei Liu

Unsupervised anomaly detection (UAD) is a widely adopted approach in industry due to rare anomaly occurrences and data imbalance. A desirable characteristic of an UAD model is contained generalization ability which excels in the…

计算机视觉与模式识别 · 计算机科学 2023-08-29 YeongHyeon Park , Sungho Kang , Myung Jin Kim , Hyeonho Jeong , Hyunkyu Park , Hyeong Seok Kim , Juneho Yi

Visual Anomaly Detection (VAD) aims to identify abnormal samples in images that deviate from normal patterns, covering multiple domains, including industrial, logical, and medical fields. Due to the domain gaps between these fields,…

计算机视觉与模式识别 · 计算机科学 2025-03-11 Zhaopeng Gu , Bingke Zhu , Guibo Zhu , Yingying Chen , Ming Tang , Jinqiao Wang

Multi-view learning has progressed rapidly in recent years. Although many previous studies assume that each instance appears in all views, it is common in real-world applications for instances to be missing from some views, resulting in…

机器学习 · 计算机科学 2022-08-30 Pengfei Zhu , Xinjie Yao , Yu Wang , Meng Cao , Binyuan Hui , Shuai Zhao , Qinghua Hu

Large Vision-Language Models (LVLMs) such as MiniGPT-4 and LLaVA have demonstrated the capability of understanding images and achieved remarkable performance in various visual tasks. Despite their strong abilities in recognizing common…

计算机视觉与模式识别 · 计算机科学 2023-12-29 Zhaopeng Gu , Bingke Zhu , Guibo Zhu , Yingying Chen , Ming Tang , Jinqiao Wang

Anomaly detection of time series, especially multivariate time series(time series with multiple sensors), has been focused on for several years. Though existing method has achieved great progress, there are several challenging problems to…

机器学习 · 计算机科学 2022-11-29 Weixuan Xiong , Xiaochen Sun