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Network anomaly detection aims to find network elements (e.g., nodes, edges, subgraphs) with significantly different behaviors from the vast majority. It has a profound impact in a variety of applications ranging from finance, healthcare to…

机器学习 · 计算机科学 2021-02-23 Kaize Ding , Qinghai Zhou , Hanghang Tong , Huan Liu

Anomaly detection in complex, high-dimensional data, such as UAV sensor readings, is essential for operational safety but challenging for existing methods due to their limited sensitivity, scalability, and inability to capture intricate…

机器学习 · 计算机科学 2025-10-28 Mingze Gong , Juan Du , Jianbang You

Diffusion models (DMs) have emerged as a powerful class of generative AI models, showing remarkable potential in anomaly detection (AD) tasks across various domains, such as cybersecurity, fraud detection, healthcare, and manufacturing. The…

机器学习 · 计算机科学 2025-02-28 Jing Liu , Zhenchao Ma , Zepu Wang , Chenxuanyin Zou , Jiayang Ren , Zehua Wang , Liang Song , Bo Hu , Yang Liu , Victor C. M. Leung

Reconstruction-based approaches have achieved remarkable outcomes in anomaly detection. The exceptional image reconstruction capabilities of recently popular diffusion models have sparked research efforts to utilize them for enhanced…

计算机视觉与模式识别 · 计算机科学 2023-12-12 Haoyang He , Jiangning Zhang , Hongxu Chen , Xuhai Chen , Zhishan Li , Xu Chen , Yabiao Wang , Chengjie Wang , Lei Xie

Few-Shot Industrial Visual Anomaly Detection (FS-IVAD) comprises a critical task in modern manufacturing settings, where automated product inspection systems need to identify rare defects using only a handful of normal/defect-free training…

计算机视觉与模式识别 · 计算机科学 2026-03-17 Aggelos Psiris , Yannis Panagakis , Maria Vakalopoulou , Georgios Th. Papadopoulos

In the area of fewshot anomaly detection (FSAD), efficient visual feature plays an essential role in memory bank M-based methods. However, these methods do not account for the relationship between the visual feature and its rotated visual…

计算机视觉与模式识别 · 计算机科学 2023-10-13 Guoyang Xie , Jinbao Wang , Jiaqi Liu , Feng Zheng , Yaochu Jin

Current fake image detectors trained on large synthetic image datasets perform satisfactorily on limited studied generative models. However, these detectors suffer a notable performance decline over unseen models. Besides, collecting…

计算机视觉与模式识别 · 计算机科学 2025-06-13 Shiyu Wu , Jing Liu , Jing Li , Yequan Wang

Few-shot anomaly detection (FSAD) has made significant strides, yet existing methods still face critical challenges: (i) dependence on task- or dataset-specific training/fine-tuning, (ii) reliance on language supervision or carefully…

计算机视觉与模式识别 · 计算机科学 2026-05-12 Guohuan Xie , Xin He , Dingying Fan , Siqi Li , Yun Liu

While recent progress has significantly boosted few-shot classification (FSC) performance, few-shot object detection (FSOD) remains challenging for modern learning systems. Existing FSOD systems follow FSC approaches, ignoring critical…

计算机视觉与模式识别 · 计算机科学 2021-09-17 Tung-I Chen , Yueh-Cheng Liu , Hung-Ting Su , Yu-Cheng Chang , Yu-Hsiang Lin , Jia-Fong Yeh , Wen-Chin Chen , Winston H. Hsu

Few-shot object detection (FSOD) is challenging due to unstable optimization and limited generalization arising from the scarcity of training samples. To address these issues, we propose a hybrid ensemble decoder that enhances…

计算机视觉与模式识别 · 计算机科学 2026-03-31 Xuanlong Yu , Youyang Sha , Longfei Liu , Xi Shen , Di Yang

The state-of-the-art in discriminative unsupervised surface anomaly detection relies on external datasets for synthesizing anomaly-augmented training images. Such approaches are prone to failure on near-in-distribution anomalies since these…

计算机视觉与模式识别 · 计算机科学 2022-11-28 Vitjan Zavrtanik , Matej Kristan , Danijel Skočaj

Multivariate Time Series Anomaly Detection (MTSAD) is critical for real-world monitoring scenarios such as industrial control and aerospace systems. Mainstream reconstruction-based anomaly detection methods suffer from two key limitations:…

机器学习 · 计算机科学 2026-04-13 Jun Liu , Ying Chen , Ziqian Lu , Qinyue Tong , Jun Tang

Object detection is a critical field in computer vision focusing on accurately identifying and locating specific objects in images or videos. Traditional methods for object detection rely on large labeled training datasets for each object…

计算机视觉与模式识别 · 计算机科学 2024-08-27 Vishal Chudasama , Hiran Sarkar , Pankaj Wasnik , Vineeth N Balasubramanian , Jayateja Kalla

Existing anomaly detection paradigms overwhelmingly focus on training detection models using exclusively normal data or unlabeled data (mostly normal samples). One notorious issue with these approaches is that they are weak in…

计算机视觉与模式识别 · 计算机科学 2021-08-03 Guansong Pang , Choubo Ding , Chunhua Shen , Anton van den Hengel

Object detection in remote sensing images relies on a large amount of labeled data for training. However, the increasing number of new categories and class imbalance make exhaustive annotation impractical. Few-shot object detection (FSOD)…

计算机视觉与模式识别 · 计算机科学 2023-11-17 Nanqing Liu , Xun Xu , Turgay Celik , Zongxin Gan , Heng-Chao Li

Object detection as a subfield within computer vision has achieved remarkable progress, which aims to accurately identify and locate a specific object from images or videos. Such methods rely on large-scale labeled training samples for each…

计算机视觉与模式识别 · 计算机科学 2024-04-09 Zhimeng Xin , Shiming Chen , Tianxu Wu , Yuanjie Shao , Weiping Ding , Xinge You

Few-Shot Object Detection (FSOD) is a rapidly growing field in computer vision. It consists in finding all occurrences of a given set of classes with only a few annotated examples for each class. Numerous methods have been proposed to…

计算机视觉与模式识别 · 计算机科学 2022-01-07 Pierre Le Jeune , Anissa Mokraoui

Video Anomaly Detection (VAD) plays a crucial role in modern surveillance systems, aiming to identify various anomalies in real-world situations. However, current benchmark datasets predominantly emphasize simple, single-frame anomalies…

计算机视觉与模式识别 · 计算机科学 2023-10-04 Yoav Arad , Michael Werman

Change detection from synthetic aperture radar (SAR) imagery is a critical yet challenging task. Existing methods mainly focus on feature extraction in spatial domain, and little attention has been paid to frequency domain. Furthermore, in…

计算机视觉与模式识别 · 计算机科学 2022-02-16 Xiaofan Qu , Feng Gao , Junyu Dong , Qian Du , Heng-Chao Li

Few-shot multispectral object detection (FSMOD) addresses the challenge of detecting objects across visible and thermal modalities with minimal annotated data. In this paper, we explore this complex task and introduce a framework named…

计算机视觉与模式识别 · 计算机科学 2025-09-26 Manuel Nkegoum , Minh-Tan Pham , Élisa Fromont , Bruno Avignon , Sébastien Lefèvre