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Unsupervised learning-based anomaly detection in latent space has gained importance since discriminating anomalies from normal data becomes difficult in high-dimensional space. Both density estimation and distance-based methods to detect…

机器学习 · 计算机科学 2024-02-16 Padmaksha Roy

In road monitoring, it is an important issue to detect changes in the road surface at an early stage to prevent damage to third parties. The target of the falling object may be a fallen tree due to the external force of a flood or an…

计算机视觉与模式识别 · 计算机科学 2022-03-03 Takato Yasuno , Junichiro Fujii , Riku Ogata , Masahiro Okano

Unsupervised Domain Adaptive Object Detection (UDA-OD) uses unlabelled data to improve the reliability of robotic vision systems in open-world environments. Previous approaches to UDA-OD based on self-training have been effective in…

计算机视觉与模式识别 · 计算机科学 2023-08-29 Nicolas Harvey Chapman , Feras Dayoub , Will Browne , Christopher Lehnert

Temporal convolutions have been the paradigm of choice in action segmentation, which enhances long-term receptive fields by increasing convolution layers. However, high layers cause the loss of local information necessary for frame…

计算机视觉与模式识别 · 计算机科学 2022-05-20 Jiahui Wang , Zhenyou Wang , Shanna Zhuang , Hui Wang

Secure and reliable data communication in optical networks is critical for high-speed Internet. However, optical fibers, serving as the data transmission medium providing connectivity to billons of users worldwide, are prone to a variety of…

网络与互联网体系结构 · 计算机科学 2022-04-15 Khouloud Abdelli , Joo Yeon Cho , Florian Azendorf , Helmut Griesser , Carsten Tropschug , Stephan Pachnicke

Video anomaly detection is commonly used in many applications such as security surveillance and is very challenging.A majority of recent video anomaly detection approaches utilize deep reconstruction models, but their performance is often…

计算机视觉与模式识别 · 计算机科学 2021-05-28 Xuanzhao Wang , Zhengping Che , Bo Jiang , Ning Xiao , Ke Yang , Jian Tang , Jieping Ye , Jingyu Wang , Qi Qi

Video based fall detection accuracy has been largely improved due to the recent progress on deep convolutional neural networks. However, there still exists some challenges, such as lighting variation, complex background, which degrade the…

计算机视觉与模式识别 · 计算机科学 2021-08-02 Ziwei Chen , Yiye Wang , Wankou Yang

Detecting and preventing falls in humans is a critical component of assistive robotic systems. While significant progress has been made in detecting falls, the prediction of falls before they happen, and analysis of the transient state…

计算机视觉与模式识别 · 计算机科学 2025-09-09 Younggeol Cho , Gokhan Solak , Olivia Nocentini , Marta Lorenzini , Andrea Fortuna , Arash Ajoudani

Fall-caused injuries are common in all types of work environments, including offices. They are the main cause of absences longer than three days, especially for small and medium-sized businesses (SMEs). However, data, data amount, data…

Anomaly detection is referred to as a process in which the aim is to detect data points that follow a different pattern from the majority of data points. Anomaly detection methods suffer from several well-known challenges that hinder their…

机器学习 · 计算机科学 2021-08-31 Kasra Babaei , Zhi Yuan Chen , Tomas Maul

Unsupervised object-centric learning from videos is a promising approach to extract structured representations from large, unlabeled collections of videos. To support downstream tasks like autonomous control, these representations must be…

计算机视觉与模式识别 · 计算机科学 2025-03-19 Anna Manasyan , Maximilian Seitzer , Filip Radovic , Georg Martius , Andrii Zadaianchuk

Anomaly detection in surveillance videos is currently a challenge because of the diversity of possible events. We propose a deep convolutional neural network (CNN) that addresses this problem by learning a correspondence between common…

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

A classical approach to abnormal activity detection is to learn a representation for normal activities from the training data and then use this learned representation to detect abnormal activities while testing. Typically, the methods based…

计算机视觉与模式识别 · 计算机科学 2019-08-14 Royston Rodrigues , Neha Bhargava , Rajbabu Velmurugan , Subhasis Chaudhuri

Inexpensive sensing and computation, as well as insurance innovations, have made smart dashboard cameras ubiquitous. Increasingly, simple model-driven computer vision algorithms focused on lane departures or safe following distances are…

计算机视觉与模式识别 · 计算机科学 2020-05-13 Sanjay Haresh , Sateesh Kumar , M. Zeeshan Zia , Quoc-Huy Tran

Visual anomaly detection is common in several applications including medical screening and production quality check. Although a definition of the anomaly is an unknown trend in data, in many cases some hints or samples of the anomaly class…

计算机视觉与模式识别 · 计算机科学 2019-03-29 Daiki Kimura , Minori Narita , Asim Munawar , Ryuki Tachibana

In an era where climate change aggravates environmental uncertainties, the identification and detection of event precursors are becoming crucial to mitigate the impacts of disastrous natural hazards. While classical sensors such as…

计算机视觉与模式识别 · 计算机科学 2026-05-28 Arthur Dérédel , Carlos Crispim-Junior , Pierre Lemaire , Johan Berthet , Laure Tougne Rodet

This paper proposed a novel anomaly detection (AD) approach of High-speed Train images based on convolutional neural networks and the Vision Transformer. Different from previous AD works, in which anomalies are identified with a single…

计算机视觉与模式识别 · 计算机科学 2022-03-30 Zhixue Wang , Yu Zhang , Lin Luo , Nan Wang

Spacecraft faces various situations when carrying out exploration missions in complex space, thus monitoring the anomaly status of spacecraft is crucial to the development of \textcolor{blue}{the} aerospace industry. The time series…

机器学习 · 计算机科学 2023-03-14 Liang Liu , Ling Tian , Zhao Kang , Tianqi Wan

Multivariate time series anomalies often manifest as shifts in cross-channel dependencies rather than simple amplitude excursions. In autonomous driving, for instance, a steering command might be internally consistent but decouple from the…

机器学习 · 计算机科学 2026-03-17 Kadir-Kaan Özer , René Ebeling , Markus Enzweiler

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