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Multi-task learning based video anomaly detection methods combine multiple proxy tasks in different branches to detect video anomalies in different situations. Most existing methods either do not combine complementary tasks to effectively…

计算机视觉与模式识别 · 计算机科学 2023-05-12 Mohammad Baradaran , Robert Bergevin

In modern intelligent video surveillance systems, automatic anomaly detection through computer vision analytics plays a pivotal role which not only significantly increases monitoring efficiency but also reduces the burden on live…

计算机视觉与模式识别 · 计算机科学 2020-04-14 Sijie Zhu , Chen Chen , Waqas Sultani

Deep Learning (DL) is vulnerable to out-of-distribution and adversarial examples resulting in incorrect outputs. To make DL more robust, several posthoc (or runtime) anomaly detection techniques to detect (and discard) these anomalous…

机器学习 · 计算机科学 2021-02-23 Saikiran Bulusu , Bhavya Kailkhura , Bo Li , Pramod K. Varshney , Dawn Song

Anomaly detection in crowd videos has become a popular area of research for the computer vision community. Several existing methods generally perform a prior training about the scene with or without the use of labeled data. However, it is…

计算机视觉与模式识别 · 计算机科学 2019-06-04 Arindam Sikdar , Ananda S. Chowdhury

Anomaly subsequence detection is to detect inconsistent data, which always contains important information, among time series. Due to the high dimensionality of the time series, traditional anomaly detection often requires a large time…

机器学习 · 计算机科学 2019-07-02 Chunkai Zhang , Yingyang Chen , Ao Yin

Anomaly detection is a popular and vital task in various research contexts, which has been studied for several decades. To ensure the safety of people's lives and assets, video surveillance has been widely deployed in various public spaces,…

计算机视觉与模式识别 · 计算机科学 2021-10-12 Jing Ren , Feng Xia , Yemeng Liu , Ivan Lee

Video anomaly detection is a complex task, and the principle of "divide and conquer" is often regarded as an effective approach to tackling intricate issues. It's noteworthy that recent methods in video anomaly detection have revealed the…

计算机视觉与模式识别 · 计算机科学 2023-10-04 Jian Xiao , Tianyuan Liu , Genlin Ji

Video anomaly detection is of critical practical importance to a variety of real applications because it allows human attention to be focused on events that are likely to be of interest, in spite of an otherwise overwhelming volume of…

计算机视觉与模式识别 · 计算机科学 2020-03-17 Guansong Pang , Cheng Yan , Chunhua Shen , Anton van den Hengel , Xiao Bai

Anomaly detection in surveillance videos has been recently gaining attention. Even though the performance of state-of-the-art methods on publicly available data sets has been competitive, they demand a massive amount of training data. Also,…

计算机视觉与模式识别 · 计算机科学 2020-04-07 Keval Doshi , Yasin Yilmaz

Video anomaly detection is to determine whether there are any abnormal events, behaviors or objects in a given video, which enables effective and intelligent public safety management. As video anomaly labeling is both time-consuming and…

计算机视觉与模式识别 · 计算机科学 2024-07-08 Yang Wang , Jiaogen Zhou , Jihong Guan

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

In recent years, many works have addressed the problem of finding never-seen-before anomalies in videos. Yet, most work has been focused on detecting anomalous frames in surveillance videos taken from security cameras. Meanwhile, the task…

计算机视觉与模式识别 · 计算机科学 2021-12-15 Laura Kart , Niv Cohen

Anomaly detection is critically important for intelligent surveillance systems to detect in a timely manner any malicious activities. Many video anomaly detection approaches using deep learning methods focus on a single camera video stream…

计算机视觉与模式识别 · 计算机科学 2020-10-07 Chongke Wu , Sicong Shao , Cihan Tunc , Salim Hariri

In this paper, we propose a deep convolutional neural network (CNN) for anomaly detection in surveillance videos. The model is adapted from a typical auto-encoder working on video patches under the perspective of sparse combination…

计算机视觉与模式识别 · 计算机科学 2019-08-20 Trong Nguyen Nguyen , Jean Meunier

We address an anomaly detection setting in which training sequences are unavailable and anomalies are scored independently of temporal ordering. Current algorithms in anomaly detection are based on the classical density estimation approach…

计算机视觉与模式识别 · 计算机科学 2016-09-29 Allison Del Giorno , J. Andrew Bagnell , Martial Hebert

Anomaly detection is to recognize samples that differ in some respect from the training observations. These samples which do not conform to the distribution of normal data are called outliers or anomalies. In real-world anomaly detection…

计算机视觉与模式识别 · 计算机科学 2022-07-05 Vahid Reza Khazaie , Anthony Wong , Yalda Mohsenzadeh

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

Recent advancements in weakly-supervised video anomaly detection have achieved remarkable performance by applying the multiple instance learning paradigm based on multimodal foundation models such as CLIP to highlight anomalous instances…

计算机视觉与模式识别 · 计算机科学 2025-11-14 Wenti Yin , Huaxin Zhang , Xiang Wang , Yuqing Lu , Yicheng Zhang , Bingquan Gong , Jialong Zuo , Li Yu , Changxin Gao , Nong Sang

We address the problem of anomaly detection in videos. The goal is to identify unusual behaviours automatically by learning exclusively from normal videos. Most existing approaches are usually data-hungry and have limited generalization…

计算机视觉与模式识别 · 计算机科学 2020-07-16 Yiwei Lu , Frank Yu , Mahesh Kumar Krishna Reddy , Yang Wang

Anomalous activity recognition deals with identifying the patterns and events that vary from the normal stream. In a surveillance paradigm, these events range from abuse to fighting and road accidents to snatching, etc. Due to the sparse…

计算机视觉与模式识别 · 计算机科学 2021-01-05 R. Maqsood , UI. Bajwa , G. Saleem , Rana H. Raza , MW. Anwar