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Video anomaly detection is a challenging task not only because it involves solving many sub-tasks such as motion representation, object localization and action recognition, but also because it is commonly considered as an unsupervised…

计算机视觉与模式识别 · 计算机科学 2020-12-04 Yuqi Ouyang , Victor Sanchez

Zero-shot anomaly detection aims to detect and localise abnormal regions in the image without access to any in-domain training images. While recent approaches leverage vision-language models (VLMs), such as CLIP, to transfer high-level…

计算机视觉与模式识别 · 计算机科学 2026-04-10 Matic Fučka , Vitjan Zavrtanik , Danijel Skočaj

We present a simple and practical framework for anomaly segmentation called Maskomaly. It builds upon mask-based standard semantic segmentation networks by adding a simple inference-time post-processing step which leverages the raw mask…

计算机视觉与模式识别 · 计算机科学 2023-08-29 Jan Ackermann , Christos Sakaridis , Fisher Yu

Anomaly detection is represented as an unsupervised learning to identify deviated images from normal images. In general, there are two main challenges of anomaly detection tasks, i.e., the class imbalance and the unexpectedness of…

计算机视觉与模式识别 · 计算机科学 2023-05-25 Shuting Yan , Pingping Chen , Honghui Chen , Huan Mao , Feng Chen , Zhijian Lin

Road anomaly detection plays a crucial role in road maintenance and in enhancing the safety of both drivers and vehicles. Recent machine learning approaches for road anomaly detection have overcome the tedious and time-consuming process of…

计算机视觉与模式识别 · 计算机科学 2025-04-21 Uthman Baroudi , Alala BaHamid , Yasser Elalfy , Ziad Al Alami

Anomaly detection identifies departures from expected behavior in safety-critical settings. When target-domain normal data are unavailable, zero-shot anomaly detection (ZSAD) leverages vision-language models (VLMs). However, CLIP's coarse…

计算机视觉与模式识别 · 计算机科学 2026-02-26 Alireza Salehi , Ehsan Karami , Sepehr Noey , Sahand Noey , Makoto Yamada , Reshad Hosseini , Mohammad Sabokrou

Advanced Encryption Standard (AES) is a widely adopted cryptographic algorithm, yet its practical implementations remain susceptible to side-channel and fault injection attacks. In this work, we propose a comprehensive framework that…

密码学与安全 · 计算机科学 2025-07-08 Nishant Chinnasami , Rye Stahle-Smith , Rasha Karakchi

This study explores the application of self-supervised learning (SSL) for improved target recognition in synthetic aperture sonar (SAS) imagery. The unique challenges of underwater environments make traditional computer vision techniques,…

计算机视觉与模式识别 · 计算机科学 2023-07-31 BW Sheffield

Robust autonomous driving requires agents to accurately identify unexpected areas (anomalies) in urban scenes. To this end, some critical issues remain open: how to design advisable metric to measure anomalies, and how to properly generate…

计算机视觉与模式识别 · 计算机科学 2025-01-03 Yuanpeng Tu , Yuxi Li , Boshen Zhang , Liang Liu , Jiangning Zhang , Yabiao Wang , Cai Rong Zhao

Object detection in streaming images is a major step in different detection-based applications, such as object tracking, action recognition, robot navigation, and visual surveillance applications. In mostcases, image quality is noisy and…

计算机视觉与模式识别 · 计算机科学 2018-10-25 Dong Kyun Shin , Minhaz Uddin Ahmed , Phill Kyu Rhee

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

Most deep anomaly detection models are based on learning normality from datasets due to the difficulty of defining abnormality by its diverse and inconsistent nature. Therefore, it has been a common practice to learn normality under the…

机器学习 · 计算机科学 2023-09-19 Minkyung Kim , Jongmin Yu , Junsik Kim , Tae-Hyun Oh , Jun Kyun Choi

This article provides a thorough meta-analysis of the anomaly detection problem. To accomplish this we first identify approaches to benchmarking anomaly detection algorithms across the literature and produce a large corpus of anomaly…

人工智能 · 计算机科学 2016-08-29 Andrew Emmott , Shubhomoy Das , Thomas Dietterich , Alan Fern , Weng-Keen Wong

We propose a novel approach to anomaly detection called Curvature Anomaly Detection (CAD) and Kernel CAD based on the idea of polyhedron curvature. Using the nearest neighbors for a point, we consider every data point as the vertex of a…

机器学习 · 计算机科学 2020-05-14 Benyamin Ghojogh , Fakhri Karray , Mark Crowley

We review the broad variety of methods that have been proposed for anomaly detection in images. Most methods found in the literature have in mind a particular application. Yet we show that the methods can be classified mainly by the…

计算机视觉与模式识别 · 计算机科学 2019-06-04 Thibaud Ehret , Axel Davy , Jean-Michel Morel , Mauricio Delbracio

As a voxel-wise labeling task, semantic scene completion (SSC) tries to simultaneously infer the occupancy and semantic labels for a scene from a single depth and/or RGB image. The key challenge for SSC is how to effectively take advantage…

计算机视觉与模式识别 · 计算机科学 2020-04-07 Jie Li , Kai Han , Peng Wang , Yu Liu , Xia Yuan

The smoothing issue in graph learning leads to indistinguishable node representations, posing significant challenges for graph-related tasks. However, our experiments reveal that this problem can uncover underlying properties of node…

机器学习 · 计算机科学 2024-10-18 Xiangyu Dong , Xingyi Zhang , Yanni Sun , Lei Chen , Mingxuan Yuan , Sibo Wang

In this paper, we proposed to investigate unsupervised anomaly detection in Synthetic Aperture Radar (SAR) images. Our approach considers anomalies as abnormal patterns that deviate from their surroundings but without any prior knowledge of…

计算机视觉与模式识别 · 计算机科学 2022-10-31 Max Muzeau , Chengfang Ren , Sébastien Angelliaume , Mihai Datcu , Jean-Philippe Ovarlez

We leverage recent breakthroughs in neural density estimation to propose a new unsupervised anomaly detection technique (ANODE). By estimating the probability density of the data in a signal region and in sidebands, and interpolating the…

高能物理 - 唯象学 · 物理学 2020-05-12 Benjamin Nachman , David Shih

We present five methods to the problem of network anomaly detection. These methods cover most of the common techniques in the anomaly detection field, including Statistical Hypothesis Tests (SHT), Support Vector Machines (SVM) and…

机器学习 · 统计学 2013-09-20 Jing Wang , Daniel Rossell , Christos G. Cassandras , Ioannis Ch. Paschalidis