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Anomaly detection is a classical problem in computer vision, namely the determination of the normal from the abnormal when datasets are highly biased towards one class (normal) due to the insufficient sample size of the other class…

计算机视觉与模式识别 · 计算机科学 2018-11-14 Samet Akcay , Amir Atapour-Abarghouei , Toby P. Breckon

We introduce a new topology for weakly supervised anomaly detection searches, di-object plus~X. In this topology, one looks for a resonance decaying to two standard model particles produced in association with other anomalous event activity…

Hyperspectral anomaly detection (HAD), a crucial approach for many civilian and military applications, seeks to identify pixels with spectral signatures that are anomalous relative to a preponderance of background signatures. Significant…

计算机视觉与模式识别 · 计算机科学 2025-10-02 Abu Hasnat Mohammad Rubaiyat , Jordan Vincent , Colin Olson

We investigate a method of model-agnostic anomaly detection through studying jets, collimated sprays of particles produced in high-energy collisions. We train a transformer neural network to encode simulated QCD "event space" dijets into a…

高能物理 - 唯象学 · 物理学 2023-05-17 Barry M. Dillon , Radha Mastandrea , Benjamin Nachman

Due to the veracity and heterogeneity in network traffic, detecting anomalous events is challenging. The computational load on global servers is a significant challenge in terms of efficiency, accuracy, and scalability. Our primary…

机器学习 · 计算机科学 2023-03-15 William Marfo , Deepak K. Tosh , Shirley V. Moore

Random projection is widely used as a method of dimension reduction. In recent years, its combination with standard techniques of regression and classification has been explored. Here we examine its use with principal component analysis…

统计方法学 · 统计学 2012-04-13 Qi Ding , Eric D. Kolaczyk

Quality control is of vital importance during electronics production. As the methods of producing electronic circuits improve, there is an increasing chance of solder defects during assembling the printed circuit board (PCB). Many…

图像与视频处理 · 电气工程与系统科学 2021-03-26 Qianru Zhang , Meng Zhang , Chinthaka Gamanayake , Chau Yuen , Zehao Geng , Hirunima Jayasekara , Xuewen Zhang , Chia-wei Woo , Jenny Low , Xiang Liu

Object detection is a critical part of visual scene understanding. The representation of the object in the detection task has important implications on the efficiency and feasibility of annotation, robustness to occlusion, pose, lighting,…

计算机视觉与模式识别 · 计算机科学 2019-07-31 Li Ding , Lex Fridman

Recently, progress has been made in the supervised training of Convolutional Object Detectors (e.g. Faster R-CNN) for threat recognition in carry-on luggage using X-ray images. This is part of the Transportation Security Administration's…

计算机视觉与模式识别 · 计算机科学 2020-10-06 John B. Sigman , Gregory P. Spell , Kevin J Liang , Lawrence Carin

Surface anomaly classification is critical for manufacturing system fault diagnosis and quality control. However, the following challenges always hinder accurate anomaly classification in practice: (i) Anomaly patterns exhibit intra-class…

机器学习 · 统计学 2025-02-18 Xuanming Cao , Chengyu Tao , Juan Du

Visual anomaly detection, an important problem in computer vision, is usually formulated as a one-class classification and segmentation task. The student-teacher (S-T) framework has proved to be effective in solving this challenge. However,…

计算机视觉与模式识别 · 计算机科学 2023-03-22 Xuan Zhang , Shiyu Li , Xi Li , Ping Huang , Jiulong Shan , Ting Chen

Anomaly detection from a single image is challenging since anomaly data is always rare and can be with highly unpredictable types. With only anomaly-free data available, most existing methods train an AutoEncoder to reconstruct the input…

计算机视觉与模式识别 · 计算机科学 2021-03-23 Yunfei Liu , Chaoqun Zhuang , Feng Lu

In the last two decades, baggage scanning has globally become one of the prime aviation security concerns. Manual screening of the baggage items is tedious, error-prone, and compromise privacy. Hence, many researchers have developed X-ray…

计算机视觉与模式识别 · 计算机科学 2020-04-16 Taimur Hassan , Samet Akcay , Mohammed Bennamoun , Salman Khan , Naoufel Werghi

In this study, we investigate the effectiveness of advanced feature engineering and hybrid model architectures for anomaly detection in a multivariate industrial time series, focusing on a steam turbine system. We evaluate the impact of…

机器学习 · 计算机科学 2025-10-31 Emilio Mastriani , Alessandro Costa , Federico Incardona , Kevin Munari , Sebastiano Spinello

Anomaly detection with convolutional autoencoders is a popular method to search for new physics in a model-agnostic manner. These techniques are powerful, but they are still a "black box," since we do not know what high-level physical…

高能物理 - 唯象学 · 物理学 2022-09-13 Layne Bradshaw , Spencer Chang , Bryan Ostdiek

Anomaly detection is the problem of recognizing abnormal inputs based on the seen examples of normal data. Despite recent advances of deep learning in recognizing image anomalies, these methods still prove incapable of handling complex…

计算机视觉与模式识别 · 计算机科学 2021-09-14 Nina Shvetsova , Bart Bakker , Irina Fedulova , Heinrich Schulz , Dmitry V. Dylov

In this paper, we introduce a novel task termed unified anomaly detection and classification, which aims to simultaneously detect anomalous regions in images and identify their specific categories. Existing methods typically treat anomaly…

计算机视觉与模式识别 · 计算机科学 2026-02-04 Ximiao Zhang , Min Xu , Zheng Zhang , Junlin Hu , Xiuzhuang Zhou

Unsupervised anomaly detection aims to identify anomalous samples from highly complex and unstructured data, which is pervasive in both fundamental research and industrial applications. However, most existing methods neglect the complex…

机器学习 · 计算机科学 2020-10-20 Haoyi Fan , Fengbin Zhang , Ruidong Wang , Liang Xi , Zuoyong Li

Semi-supervised methods of anomaly detection have seen substantial advancement in recent years. Of particular interest are applications of such methods to diverse, real-world anomaly detection problems where anomalous variations can vary…

计算机视觉与模式识别 · 计算机科学 2021-04-29 Jack W. Barker , Toby P. Breckon

Industrial anomaly detection is an important task within computer vision with a wide range of practical use cases. The small size of anomalous regions in many real-world datasets necessitates processing the images at a high resolution. This…

计算机视觉与模式识别 · 计算机科学 2024-04-10 Blaž Rolih , Dick Ameln , Ashwin Vaidya , Samet Akcay