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Anomaly detection in spatiotemporal data is a challenging problem encountered in a variety of applications including hyperspectral imaging, video surveillance, and urban traffic monitoring. Existing anomaly detection methods are most suited…

Machine Learning · Computer Science 2020-10-27 Seyyid Emre Sofuoglu , Selin Aviyente

Document Presentation Attack Detection (DPAD) is an important measure in protecting the authenticity of a document image. However, recent DPAD methods demand additional resources, such as manual effort in collecting additional data or…

Computer Vision and Pattern Recognition · Computer Science 2024-11-25 Changsheng Chen , Yongyi Deng , Liangwei Lin , Zitong Yu , Zhimao Lai

Hyperspectral cameras can provide unique spectral signatures for consistently distinguishing materials that can be used to solve surveillance tasks. In this paper, we propose a novel real-time hyperspectral likelihood maps-aided tracking…

Computer Vision and Pattern Recognition · Computer Science 2017-07-13 Burak Uzkent , Aneesh Rangnekar , M. J. Hoffman

The accurate detection of suspicious regions in medical images is an error-prone and time-consuming process required by many routinely performed diagnostic procedures. To support clinicians during this difficult task, several automated…

Computer Vision and Pattern Recognition · Computer Science 2023-06-28 Marc K. Ickler , Michael Baumgartner , Saikat Roy , Tassilo Wald , Klaus H. Maier-Hein

Urbanization advances at unprecedented rates, leading to negative environmental and societal impacts. Remote sensing can help mitigate these effects by supporting sustainable development strategies with accurate information on urban growth.…

Computer Vision and Pattern Recognition · Computer Science 2025-06-10 Sebastian Hafner , Heng Fang , Hossein Azizpour , Yifang Ban

Semi-supervised video anomaly detection (VAD) methods formulate the task of anomaly detection as detection of deviations from the learned normal patterns. Previous works in the field (reconstruction or prediction-based methods) suffer from…

Computer Vision and Pattern Recognition · Computer Science 2022-05-05 Mohammad Baradaran , Robert Bergevin

The accurate diagnosis and segmentation of tumors in contrast-enhanced Computed Tomography (CT) are fundamentally driven by the distinctive hemodynamic profiles of contrast agents over time. However, in real-world clinical practice,…

Computer Vision and Pattern Recognition · Computer Science 2026-03-02 Zishuo Wan , Qinqin Kang , Na Li , Yi Huang , Qianru Zhang , Le Lu , Yun Bian , Dawei Ding , Ke Yan

Rectified Flow (RF) models have advanced high-quality image and video synthesis via optimal transport theory. However, when applied to image-to-image translation, they still depend on costly multi-step denoising, hindering real-time…

Computer Vision and Pattern Recognition · Computer Science 2025-11-26 Shengqian Li , Ming Gao , Yi Liu , Zuzeng Lin , Feng Wang , Feng Dai

Data Drift is the phenomenon where the generating model behind the data changes over time. Due to data drift, any model built on the past training data becomes less relevant and inaccurate over time. Thus, detecting and controlling for data…

Machine Learning · Computer Science 2025-04-29 Subhadip Bandyopadhyay , Joy Bose , Sujoy Roy Chowdhury

Accurate travel time estimation (TTE) plays a crucial role in intelligent transportation systems. However, it remains challenging due to heterogeneous data sources and complex traffic dynamics. Moreover, traditional approaches typically…

Machine Learning · Computer Science 2026-01-27 Zhi Liu , Xuyuan Hu , Xiao Han , Zhehao Dai , Zhaolin Deng , Guojiang Shen , Xiangjie Kong

Anomaly detection is widely used in network intrusion detection, autonomous driving, medical diagnosis, credit card frauds, etc. However, several key challenges remain open, such as lack of ground truth labels, presence of complex temporal…

Machine Learning · Computer Science 2023-03-24 Shyam Sundar Saravanan , Tie Luo , Mao Van Ngo

Motion prediction plays an essential role in autonomous driving systems, enabling autonomous vehicles to achieve more accurate local-path planning and driving decisions based on predictions of the surrounding vehicles. However, existing…

Computer Vision and Pattern Recognition · Computer Science 2024-09-04 Zhanwen Liu , Chao Li , Yang Wang , Nan Yang , Xing Fan , Jiaqi Ma , Xiangmo Zhao

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…

Computer Vision and Pattern Recognition · Computer Science 2024-02-09 Kilian Batzner , Lars Heckler , Rebecca König

Visual tracking has made significant improvements in the past few decades. Most existing state-of-the-art trackers 1) merely aim for performance in ideal conditions while overlooking the real-world conditions; 2) adopt the…

Computer Vision and Pattern Recognition · Computer Science 2023-08-22 Ziang Cao , Ziyuan Huang , Liang Pan , Shiwei Zhang , Ziwei Liu , Changhong Fu

Hyperspectral images are high-dimensional datasets comprising hundreds of contiguous spectral bands, enabling detailed analysis of materials and surfaces. Hyperspectral anomaly detection (HAD) refers to the technique of identifying and…

Computer Vision and Pattern Recognition · Computer Science 2025-07-14 Aayushma Pant , Arbind Agrahari Baniya , Tsz-Kwan Lee , Sunil Aryal

Human trajectory anomaly detection has become increasingly important across a wide range of applications, including security surveillance and public health. However, existing trajectory anomaly detection methods are primarily focused on…

Machine Learning · Computer Science 2024-11-05 Yueyang Liu , Lance Kennedy , Hossein Amiri , Andreas Züfle

The Human Mobility Signature Identification (HuMID) problem stands as a fundamental task within the realm of driving style representation, dedicated to discerning latent driving behaviors and preferences from diverse driver trajectories for…

Artificial Intelligence · Computer Science 2024-08-20 Zhipeng Zheng , Yuchen Jiang , Shiyao Zhang , Xuetao Wei

Group Anomaly Detection (GAD) identifies unusual pattern in groups where individual members might not be anomalous. This task is of major importance across multiple disciplines, in which also sequences like trajectories can be considered as…

Machine Learning · Computer Science 2024-04-26 Andreas Lohrer , Darpan Malik , Claudius Zelenka , Peer Kröger

Visible-infrared object detection has gained sufficient attention due to its detection performance in low light, fog, and rain conditions. However, visible and infrared modalities captured by different sensors exist the information…

Computer Vision and Pattern Recognition · Computer Science 2025-11-17 Wencong Wu , Xiuwei Zhang , Hanlin Yin , Shun Dai , Hongxi Zhang , Yanning Zhang

The surge in real-time data collection across various industries has underscored the need for advanced anomaly detection in both univariate and multivariate time series data. This paper introduces TransNAS-TSAD, a framework that synergizes…

Machine Learning · Computer Science 2024-03-06 Ijaz Ul Haq , Byung Suk Lee , Donna M. Rizzo
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