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Video object detection is a challenging task because videos often suffer from image deterioration such as motion blur, occlusion, and deformable shapes, making it significantly more difficult than detecting objects in still images. Prior…

Computer Vision and Pattern Recognition · Computer Science 2025-08-29 Lucas Rakotoarivony

Unsupervised anomaly detection in medical imaging aims to detect and localize arbitrary anomalies without requiring annotated anomalous data during training. Often, this is achieved by learning a data distribution of normal samples and…

Computer Vision and Pattern Recognition · Computer Science 2023-01-06 Carsten T. Lüth , David Zimmerer , Gregor Koehler , Paul F. Jaeger , Fabian Isensee , Jens Petersen , Klaus H. Maier-Hein

Contrastive self-supervised learning methods famously produce high quality transferable representations by learning invariances to different data augmentations. Invariances established during pre-training can be interpreted as strong…

Computer Vision and Pattern Recognition · Computer Science 2023-04-05 Ruchika Chavhan , Henry Gouk , Jan Stuehmer , Calum Heggan , Mehrdad Yaghoobi , Timothy Hospedales

Visual anomaly detection in real-world industrial settings faces two major limitations. First, most existing methods are trained on purely normal data or on unlabeled datasets assumed to be predominantly normal, presuming the absence of…

Computer Vision and Pattern Recognition · Computer Science 2026-02-05 Anindya Sundar Das , Monowar Bhuyan

Detecting Out-of-Domain (OOD) or unknown intents from user queries is essential in a task-oriented dialog system. A key challenge of OOD detection is to learn discriminative semantic features. Traditional cross-entropy loss only focuses on…

Computation and Language · Computer Science 2021-06-01 Zhiyuan Zeng , Keqing He , Yuanmeng Yan , Zijun Liu , Yanan Wu , Hong Xu , Huixing Jiang , Weiran Xu

In Pose-based Video Anomaly Detection prior art is rooted on the assumption that abnormal events can be mostly regarded as a result of uncommon human behavior. Opposed to utilizing skeleton representations of humans, however, we investigate…

Computer Vision and Pattern Recognition · Computer Science 2025-03-30 Mia Siemon , Ivan Nikolov , Thomas B. Moeslund , Kamal Nasrollahi

Currently, there are computer vision systems that help us with tasks that would be dull for humans, such as surveillance and vehicle tracking. An important part of this analysis is to identify traffic anomalies. An anomaly tells us that…

Current approaches for video grounding propose kinds of complex architectures to capture the video-text relations, and have achieved impressive improvements. However, it is hard to learn the complicated multi-modal relations by only…

Computer Vision and Pattern Recognition · Computer Science 2021-08-25 Xinpeng Ding , Nannan Wang , Shiwei Zhang , De Cheng , Xiaomeng Li , Ziyuan Huang , Mingqian Tang , Xinbo Gao

Distracted driving continues to be a significant cause of road traffic injuries and fatalities worldwide, even with advancements in driver monitoring technologies. Recent developments in machine learning (ML) and deep learning (DL) have…

Computer Vision and Pattern Recognition · Computer Science 2025-05-06 Anthony Dontoh , Stephanie Ivey , Logan Sirbaugh , Andrews Danyo , Armstrong Aboah

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

Long-term forecasting presents unique challenges due to the time and memory complexity of handling long sequences. Existing methods, which rely on sliding windows to process long sequences, struggle to effectively capture long-term…

Machine Learning · Computer Science 2024-03-26 Junwoo Park , Daehoon Gwak , Jaegul Choo , Edward Choi

Manual visual inspection performed by certified inspectors is still the main form of road pothole detection. This process is, however, not only tedious, time-consuming and costly, but also dangerous for the inspectors. Furthermore, the road…

Computer Vision and Pattern Recognition · Computer Science 2021-04-21 Rui Fan , Hengli Wang , Mohammud J. Bocus , Ming Liu

Self-supervised methods have significantly closed the gap with end-to-end supervised learning for image classification. In the case of human action videos, however, where both appearance and motion are significant factors of variation, this…

Computer Vision and Pattern Recognition · Computer Science 2022-06-28 Salar Hosseini Khorasgani , Yuxuan Chen , Florian Shkurti

Monocular 3D object detection has become a mainstream approach in automatic driving for its easy application. A prominent advantage is that it does not need LiDAR point clouds during the inference. However, most current methods still rely…

Computer Vision and Pattern Recognition · Computer Science 2023-03-16 Runzhou Tao , Wencheng Han , Zhongying Qiu , Cheng-zhong Xu , Jianbing Shen

Anomaly detection aims at identifying deviant samples from the normal data distribution. Contrastive learning has provided a successful way to sample representation that enables effective discrimination on anomalies. However, when…

Computer Vision and Pattern Recognition · Computer Science 2022-07-26 Gaoang Wang , Yibing Zhan , Xinchao Wang , Mingli Song , Klara Nahrstedt

A novel approach to detect road surface anomalies by visual tracking of a preceding vehicle is proposed. The method is versatile, predicting any kind of road anomalies, such as potholes, bumps, debris, etc., unlike direct observation…

Computer Vision and Pattern Recognition · Computer Science 2025-05-08 Petr Jahoda , Jan Cech

We introduce the task of weakly supervised learning for detecting human and object interactions in videos. Our task poses unique challenges as a system does not know what types of human-object interactions are present in a video or the…

Computer Vision and Pattern Recognition · Computer Science 2021-10-08 Shuang Li , Yilun Du , Antonio Torralba , Josef Sivic , Bryan Russell

Weakly-supervised video anomaly detection (WS-VAD) using Multiple Instance Learning (MIL) suffers from label ambiguity, hindering discriminative feature learning. We propose ProDisc-VAD, an efficient framework tackling this via two…

Computer Vision and Pattern Recognition · Computer Science 2025-07-18 Tao Zhu , Qi Yu , Xinru Dong , Shiyu Li , Yue Liu , Jinlong Jiang , Lei Shu

The goal of contrastive learning based pre-training is to leverage large quantities of unlabeled data to produce a model that can be readily adapted downstream. Current approaches revolve around solving an image discrimination task: given…

Computer Vision and Pattern Recognition · Computer Science 2021-11-30 Chenhongyi Yang , Lichao Huang , Elliot J. Crowley

Semi-supervised learning methods have shown promising results in solving many practical problems when only a few labels are available. The existing methods assume that the class distributions of labeled and unlabeled data are equal;…

Machine Learning · Computer Science 2024-08-06 Min Gu Kwak , Hyungu Kahng , Seoung Bum Kim