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The lack of evidence for new interactions and particles at the Large Hadron Collider has motivated the high-energy physics community to explore model-agnostic data-analysis approaches to search for new physics. Autoencoders are unsupervised…

高能物理 - 唯象学 · 物理学 2022-05-20 Vishal S. Ngairangbam , Michael Spannowsky , Michihisa Takeuchi

We propose a completely unsupervised pixel-wise anomaly detection method for hyperspectral images. The proposed method consists of three steps called data preparation, reconstruction, and detection. In the data preparation step, we apply a…

图像与视频处理 · 电气工程与系统科学 2021-01-25 Sertac Arisoy , Nasser M. Nasrabadi , Koray Kayabol

While nowadays visual anomaly detection algorithms use deep neural networks to extract salient features from images, the high dimensionality of extracted features makes it difficult to apply those algorithms to large data with 1000s of…

计算机视觉与模式识别 · 计算机科学 2026-03-02 Teng-Yok Lee

In today's digital world, the generation of vast amounts of streaming data in various domains has become ubiquitous. However, many of these data are unlabeled, making it challenging to identify events, particularly anomalies. This task…

机器学习 · 计算机科学 2026-02-16 Jin Li , Kleanthis Malialis , Christos G. Panayiotou , Marios M. Polycarpou

Estimation of uncertainty in deep learning models is of vital importance, especially in medical imaging, where reliance on inference without taking into account uncertainty could lead to misdiagnosis. Recently, the probabilistic Variational…

机器学习 · 计算机科学 2020-10-20 Haleh Akrami , Anand A. Joshi , Sergul Aydore , Richard M. Leahy

Weakly supervised graph anomaly detection aims to unveil unusual graph instances, e.g., nodes, whose behaviors significantly differ from normal ones, given only a limited number of annotated anomalies and abundant unlabeled samples. A major…

机器学习 · 计算机科学 2026-05-13 Yingjie Zhou , Yuqin Xie , Fanxing Liu , Dongjin Song , Ce Zhu , Lingqiao Liu

Data augmentation methods are commonly integrated into the training of anomaly detection models. Previous approaches have primarily focused on replicating real-world anomalies or enhancing diversity, without considering that the standard of…

人工智能 · 计算机科学 2024-12-30 Jiang Lin , Yaping Yan

In quantised autoencoders, images are usually split into local patches, each encoded by one token. This representation is redundant in the sense that the same number of tokens is spend per region, regardless of the visual information…

计算机视觉与模式识别 · 计算机科学 2024-08-06 Tim Elsner , Paula Usinger , Victor Czech , Gregor Kobsik , Yanjiang He , Isaak Lim , Leif Kobbelt

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

Reconstruction error-based neural architectures constitute a classical deep learning approach to anomaly detection which has shown great performances. It consists in training an Autoencoder to reconstruct a set of examples deemed to…

机器学习 · 计算机科学 2024-06-06 Fabrizio Angiulli , Fabio Fassetti , Luca Ferragina

To achieve reliable mining results for massive vessel trajectories, one of the most important challenges is how to efficiently compute the similarities between different vessel trajectories. The computation of vessel trajectory similarity…

机器学习 · 计算机科学 2021-06-11 Maohan Liang , Ryan Wen Liu , Shichen Li , Zhe Xiao , Xin Liu , Feng Lu

Semantic change detection in remote sensing aims to identify land cover changes between bi-temporal image pairs. Progress in this area has been limited by the scarcity of annotated datasets, as pixel-level annotation is costly and…

计算机视觉与模式识别 · 计算机科学 2026-01-06 Xavier Bou , Elliot Vincent , Gabriele Facciolo , Rafael Grompone von Gioi , Jean-Michel Morel , Thibaud Ehret

An assumption-free automatic check of medical images for potentially overseen anomalies would be a valuable assistance for a radiologist. Deep learning and especially Variational Auto-Encoders (VAEs) have shown great potential in the…

机器学习 · 计算机科学 2019-07-12 David Zimmerer , Fabian Isensee , Jens Petersen , Simon Kohl , Klaus Maier-Hein

Anomaly detection in medical images is an important yet challenging task due to the diversity of possible anomalies and the practical impossibility of collecting comprehensively annotated data sets. In this work, we tackle unsupervised…

计算机视觉与模式识别 · 计算机科学 2025-07-25 Francesco Dalmonte , Emirhan Bayar , Emre Akbas , Mariana-Iuliana Georgescu

The gap between our ability to collect interesting data and our ability to analyze these data is growing at an unprecedented rate. Recent algorithmic attempts to fill this gap have employed unsupervised tools to discover structure in data.…

机器学习 · 计算机科学 2018-01-23 Genevieve Flaspohler , Nicholas Roy , Yogesh Girdhar

Given a training dataset composed of images and corresponding category labels, deep convolutional neural networks show a strong ability in mining discriminative parts for image classification. However, deep convolutional neural networks…

计算机视觉与模式识别 · 计算机科学 2019-03-08 Weifeng Ge , Xiangru Lin , Yizhou Yu

Deep Learning based methods have emerged as the indisputable leaders for virtually all image restoration tasks. Especially in the domain of microscopy images, various content-aware image restoration (CARE) approaches are now used to improve…

计算机视觉与模式识别 · 计算机科学 2021-03-02 Mangal Prakash , Alexander Krull , Florian Jug

For effective human-robot teaming, it is important for the robots to be able to share their visual perception with the human operators. In a harsh remote collaboration setting, data compression techniques such as autoencoder can be utilized…

计算机视觉与模式识别 · 计算机科学 2021-12-28 Hyeonwoo Yu , Jean Oh

Detecting vehicles in aerial imagery is a critical task with applications in traffic monitoring, urban planning, and defense intelligence. Deep learning methods have provided state-of-the-art (SOTA) results for this application. However, a…

计算机视觉与模式识别 · 计算机科学 2025-07-29 Xiao Fang , Minhyek Jeon , Zheyang Qin , Stanislav Panev , Celso de Melo , Shuowen Hu , Shayok Chakraborty , Fernando De la Torre

Unsupervised anomaly detection is a challenging task. Autoencoders (AEs) or generative models are often employed to model the data distribution of normal inputs and subsequently identify anomalous, out-of-distribution inputs by high…

机器学习 · 计算机科学 2025-06-12 Yalin Liao , Austin J. Brockmeier