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Graph anomaly detection (GAD) is critical for identifying abnormal nodes in graph-structured data from diverse domains, including cybersecurity and social networks. The existing GAD methods often focus on the learning paradigms of…

机器学习 · 计算机科学 2026-02-24 Yixin Liu , Shiyuan Li , Yu Zheng , Qingfeng Chen , Chengqi Zhang , Philip S. Yu , Shirui Pan

Anomaly detection, the task of identifying unusual samples in data, often relies on a large set of training samples. In this work, we consider the setting of few-shot anomaly detection in images, where only a few images are given at…

计算机视觉与模式识别 · 计算机科学 2021-04-30 Shelly Sheynin , Sagie Benaim , Lior Wolf

Video anomaly detection (VAD) in autonomous driving scenario is an important task, however it involves several challenges due to the ego-centric views and moving camera. Due to this, it remains largely under-explored. While recent…

计算机视觉与模式识别 · 计算机科学 2024-08-13 Utkarsh Tiwari , Snehashis Majhi , Michal Balazia , François Brémond

Anomaly detection without priors of the anomalies is challenging. In the field of unsupervised anomaly detection, traditional auto-encoder (AE) tends to fail based on the assumption that by training only on normal images, the model will not…

计算机视觉与模式识别 · 计算机科学 2024-08-15 Yajie Cui , Zhaoxiang Liu , Shiguo Lian

We study the problem of semi-supervised anomaly detection with domain adaptation. Given a set of normal data from a source domain and a limited amount of normal examples from a target domain, the goal is to have a well-performing anomaly…

机器学习 · 计算机科学 2020-06-09 Ziyi Yang , Iman Soltani Bozchalooi , Eric Darve

The reliability of artificial intelligence (AI) systems in open-world settings depends heavily on their ability to flag out-of-distribution (OOD) inputs unseen during training. Recent advances in large-scale vision-language models (VLMs)…

机器学习 · 计算机科学 2025-10-14 Faizul Rakib Sayem , Shahana Ibrahim

Anomaly detection (AD) is the machine learning task of identifying highly discrepant abnormal samples by solely relying on the consistency of the normal training samples. Under the constraints of a distribution shift, the assumption that…

机器学习 · 计算机科学 2023-12-25 João B. S. Carvalho , Mengtao Zhang , Robin Geyer , Carlos Cotrini , Joachim M. Buhmann

In recent years, numerous domain adaptive strategies have been proposed to help deep learning models overcome the challenges posed by domain shift. However, even unsupervised domain adaptive strategies still require a large amount of target…

图像与视频处理 · 电气工程与系统科学 2024-07-11 Sumayya Inayat , Nimra Dilawar , Waqas Sultani , Mohsen Ali

Detecting anomalies in images is an important task, especially in real-time computer vision applications. In this work, we focus on computational efficiency and propose a lightweight feature extractor that processes an image in less than a…

计算机视觉与模式识别 · 计算机科学 2024-02-09 Kilian Batzner , Lars Heckler , Rebecca König

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

The paper explores the industrial multimodal Anomaly Detection (AD) task, which exploits point clouds and RGB images to localize anomalies. We introduce a novel light and fast framework that learns to map features from one modality to the…

计算机视觉与模式识别 · 计算机科学 2024-07-09 Alex Costanzino , Pierluigi Zama Ramirez , Giuseppe Lisanti , Luigi Di Stefano

Due to the limited availability of data, existing few-shot learning methods trained from scratch fail to achieve satisfactory performance. In contrast, large-scale pre-trained models such as CLIP demonstrate remarkable few-shot and…

计算机视觉与模式识别 · 计算机科学 2023-11-20 Kun Song , Huimin Ma , Bochao Zou , Huishuai Zhang , Weiran Huang

Anomaly detection methods typically require extensive normal samples from the target class for training, limiting their applicability in scenarios that require rapid adaptation, such as cold start. Zero-shot and few-shot anomaly detection…

计算机视觉与模式识别 · 计算机科学 2026-03-03 Zhaopeng Gu , Bingke Zhu , Guibo Zhu , Yingying Chen , Ming Tang , Jinqiao Wang

Cross-domain few-shot object detection (CD-FSOD) aims to adapt pretrained detectors from a source domain to target domains with limited annotations, suffering from severe domain shifts and data scarcity problems. In this work, we find a…

计算机视觉与模式识别 · 计算机科学 2026-03-20 Yongwei Jiang , Yixiong Zou , Yuhua Li , Ruixuan Li

Most current methods for detecting anomalies in text concentrate on constructing models solely relying on unlabeled data. These models operate on the presumption that no labeled anomalous examples are available, which prevents them from…

机器学习 · 计算机科学 2023-08-24 Anindya Sundar Das , Aravind Ajay , Sriparna Saha , Monowar Bhuyan

Video anomaly detection (VAD) is a crucial task in video analysis and surveillance within computer vision. Currently, VAD is gaining attention with memory techniques that store the features of normal frames. The stored features are utilized…

计算机视觉与模式识别 · 计算机科学 2024-11-26 Sunghyun Ahn , Youngwan Jo , Kijung Lee , Sanghyun Park

Recent studies give more attention to the anomaly detection (AD) methods that can leverage a handful of labeled anomalies along with abundant unlabeled data. These existing anomaly-informed AD methods rely on manually predefined score…

机器学习 · 计算机科学 2023-06-27 Minqi Jiang , Songqiao Han , Hailiang Huang

In this work, by re-examining the "matching" nature of Anomaly Detection (AD), we propose a new AD framework that simultaneously enjoys new records of AD accuracy and dramatically high running speed. In this framework, the anomaly detection…

计算机视觉与模式识别 · 计算机科学 2023-08-15 Hanxi Li , Jianfei Hu , Bo Li , Hao Chen , Yongbin Zheng , Chunhua Shen

Few-Shot Anomaly Detection (FSAD) has emerged as a critical paradigm for identifying irregularities using scarce normal references. While recent methods have integrated textual semantics to complement visual data, they predominantly rely on…

计算机视觉与模式识别 · 计算机科学 2026-01-26 Yuxin Jiang , Yunkang Cao , Yuqi Cheng , Yiheng Zhang , Weiming Shen

Precise anomaly detection in medical images is critical for clinical decision-making. While recent unsupervised or semi-supervised anomaly detection methods trained on large-scale normal data show promising results, they lack fine-grained…

计算机视觉与模式识别 · 计算机科学 2025-08-12 Yue Zhou , Yuan Bi , Wenjuan Tong , Wei Wang , Nassir Navab , Zhongliang Jiang