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Multivariate time-series anomaly detection (MTSAD) aims to identify deviations from normality in multivariate time-series and is critical in real-world applications. However, in real-world deployments, distribution shifts are ubiquitous and…

Machine Learning · Computer Science 2026-04-03 HyunGi Kim , Jisoo Mok , Hyungyu Lee , Juhyeon Shin , Sungroh Yoon

Recent methods for ego-centric Traffic Anomaly Detection (TAD) often rely on complex multi-stage or multi-representation fusion architectures, yet it remains unclear whether such complexity is necessary. Recent findings in visual perception…

Computer Vision and Pattern Recognition · Computer Science 2025-09-03 Svetlana Orlova , Tommie Kerssies , Brunó B. Englert , Gijs Dubbelman

In recent years, tensor decomposition-based approaches for hyperspectral anomaly detection (HAD) have gained significant attention in the field of remote sensing. However, existing methods often fail to fully leverage both the global…

Computer Vision and Pattern Recognition · Computer Science 2025-10-21 Wenjin Qin , Hailin Wang , Hao Shu , Feng Zhang , Jianjun Wang , Xiangyong Cao , Xi-Le Zhao , Gemine Vivone

Most of current computer vision-based advanced driver assistance systems (ADAS) perform detection and tracking of objects quite successfully under regular conditions. However, under adverse weather and changing lighting conditions, and in…

Computer Vision and Pattern Recognition · Computer Science 2024-12-02 Jon Gutiérrez-Zaballa , Koldo Basterretxea , Javier Echanobe , M. Victoria Martínez , Unai Martínez-Corral , Óscar Mata Carballeira , Inés del Campo

How can we find patterns and anomalies in a tensor, or multi-dimensional array, in an efficient and directly interpretable way? How can we do this in an online environment, where a new tensor arrives each time step? Finding patterns and…

Numerical Analysis · Computer Science 2018-09-05 Jungwoo Lee , Dongjin Choi , Lee Sael

Visual object tracking, which is primarily based on visible light image sequences, encounters numerous challenges in complicated scenarios, such as low light conditions, high dynamic ranges, and background clutter. To address these…

Computer Vision and Pattern Recognition · Computer Science 2024-10-24 Hongze Sun , Rui Liu , Wuque Cai , Jun Wang , Yue Wang , Huajin Tang , Yan Cui , Dezhong Yao , Daqing Guo

Convolutional Neural Network models have successfully detected retinal illness from optical coherence tomography (OCT) and fundus images. These CNN models frequently rely on vast amounts of labeled data for training, difficult to obtain,…

Computer Vision and Pattern Recognition · Computer Science 2022-01-28 Sourya Dipta Das , Saikat Dutta , Nisarg A. Shah , Dwarikanath Mahapatra , Zongyuan Ge

We propose MFT -- Multi-Flow dense Tracker -- a novel method for dense, pixel-level, long-term tracking. The approach exploits optical flows estimated not only between consecutive frames, but also for pairs of frames at logarithmically…

Computer Vision and Pattern Recognition · Computer Science 2023-11-13 Michal Neoral , Jonáš Šerých , Jiří Matas

Anomaly detection with only prior knowledge from normal samples attracts more attention because of the lack of anomaly samples. Existing CNN-based pixel reconstruction approaches suffer from two concerns. First, the reconstruction source…

Computer Vision and Pattern Recognition · Computer Science 2022-12-12 Zhiyuan You , Kai Yang , Wenhan Luo , Lei Cui , Yu Zheng , Xinyi Le

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…

Computer Vision and Pattern Recognition · Computer Science 2023-05-25 Shuting Yan , Pingping Chen , Honghui Chen , Huan Mao , Feng Chen , Zhijian Lin

Effective anomaly detection in time series is pivotal for modern industrial applications and financial systems. Due to the scarcity of anomaly labels and the high cost of manual labeling, reconstruction-based unsupervised approaches have…

Machine Learning · Computer Science 2025-09-25 Tiejun Wang , Rui Wang , Xudong Mou , Mengyuan Ma , Tianyu Wo , Renyu Yang , Xudong Liu

Detecting anomalies in traffic scenes is crucial for ensuring safety in autonomous driving, yet collecting representative anomalous data remains challenging. Existing anomaly detection methods are highly specialized and rely on normality as…

Computer Vision and Pattern Recognition · Computer Science 2026-05-20 Albert Schotschneider , Daniel Bogdoll , Svetlana Pavlitska , Ahmed Abouelazm , Johann Marius Zoellner

Transformer-based methods have demonstrated strong potential in hyperspectral pansharpening by modeling long-range dependencies. However, their effectiveness is often limited by redundant token representations and a lack of multi-scale…

Computer Vision and Pattern Recognition · Computer Science 2025-08-12 Hongkun Jin , Hongcheng Jiang , Zejun Zhang , Yuan Zhang , Jia Fu , Tingfeng Li , Kai Luo

Object detection from images captured by Unmanned Aerial Vehicles (UAVs) is becoming increasingly useful. Despite the great success of the generic object detection methods trained on ground-to-ground images, a huge performance drop is…

Computer Vision and Pattern Recognition · Computer Science 2020-10-06 Zhenyu Wu , Karthik Suresh , Priya Narayanan , Hongyu Xu , Heesung Kwon , Zhangyang Wang

Time series anomaly detection (TSAD) is a critical task, but developing models that generalize to unseen data in a zero-shot manner remains a major challenge. Prevailing foundation models for TSAD predominantly rely on reconstruction-based…

Machine Learning · Computer Science 2026-05-29 Tian Lan , Hao Duong Le , Jinbo Li , Wenjun He , Meng Wang , Chenghao Liu , Chen Zhang

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…

Computer Vision and Pattern Recognition · Computer Science 2021-03-23 Yunfei Liu , Chaoqun Zhuang , Feng Lu

In the past few years, the performance of road defect detection has been remarkably improved thanks to advancements on various studies on computer vision and deep learning. Although a large-scale and well-annotated datasets enhance the…

Computer Vision and Pattern Recognition · Computer Science 2020-02-04 Jongmin Yu , Duyong Kim , Younkwan Lee , Moongu Jeon

In this work, we propose several enhancements to a geometric transformation based model for anomaly detection in images (GeoTranform). The model assumes that the anomaly class is unknown and that only inlier samples are available for…

Computer Vision and Pattern Recognition · Computer Science 2020-05-19 Esteban Reyes , Pablo A. Estévez

The perception of autonomous vehicles has to be efficient, robust, and cost-effective. However, cameras are not robust against severe weather conditions, lidar sensors are expensive, and the performance of radar-based perception is still…

Computer Vision and Pattern Recognition · Computer Science 2024-12-04 Felix Fent , Andras Palffy , Holger Caesar

In autonomous driving, 3D object detection based on multi-modal data has become an indispensable approach when facing complex environments around the vehicle. During multi-modal detection, LiDAR and camera are simultaneously applied for…

Computer Vision and Pattern Recognition · Computer Science 2023-01-19 Rui Wan , Tianyun Zhao , Wei Zhao