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This paper presents a new loss function for the prediction of oriented bounding boxes, named head-tail-loss. The loss function consists in minimizing the distance between the prediction and the annotation of two key points that are…

Computer Vision and Pattern Recognition · Computer Science 2023-04-11 Pau Gallés , Xi Chen

Pedestrian heading tracking enables applications in pedestrian navigation, traffic safety, and accessibility. Previous works, using inertial sensor fusion or machine learning, are limited in that they assume the phone is fixed in specific…

Signal Processing · Electrical Eng. & Systems 2024-10-10 Yucheng Yang , Jingjie Li , Kassem Fawaz

Manual annotation of bounding boxes for object detection in digital images is tedious, and time and resource consuming. In this paper, we propose a semi-automatic method for efficient bounding box annotation. The method trains the object…

Machine Learning · Computer Science 2020-07-03 Bishwo Adhikari , Heikki Huttunen

Detecting flying animals (e.g., birds, bats, and insects) using weather radar helps gain insights into animal movement and migration patterns, aids in management efforts (such as biosecurity) and enhances our understanding of the…

Machine Learning · Computer Science 2024-08-09 Mubin Ul Haque , Joel Janek Dabrowski , Rebecca M. Rogers , Hazel Parry

Standard clinical assessments of upper-extremity motor function after stroke either rely on ordinal scoring, which lacks sensitivity, or time-based task metrics, which do not capture movement quality. In this work, we present a computer…

Computer Vision and Pattern Recognition · Computer Science 2026-04-01 David Robinson , Animesh Gupta , Elizabeth Clark , Olga Melnik , Qiushi Fu , Mubarak Shah

Large-scale transmission radiography scanners are used to image vehicles and cargo containers. Acquired images are inspected for threats by a human operator or a computer algorithm. To make accurate detections, it is important that image…

Instrumentation and Detectors · Physics 2016-08-15 Thomas W. Rogers , James Ollier , Edward J. Morton , Lewis D. Griffin

The US weather radar archive holds detailed information about biological phenomena in the atmosphere over the last 20 years. Communally roosting birds congregate in large numbers at nighttime roosting locations, and their morning exodus…

Computer Vision and Pattern Recognition · Computer Science 2020-04-28 Zezhou Cheng , Saadia Gabriel , Pankaj Bhambhani , Daniel Sheldon , Subhransu Maji , Andrew Laughlin , David Winkler

This paper introduces the Budding Ensemble Architecture (BEA), a novel reduced ensemble architecture for anchor-based object detection models. Object detection models are crucial in vision-based tasks, particularly in autonomous systems.…

Computer Vision and Pattern Recognition · Computer Science 2023-11-13 Syed Sha Qutub , Neslihan Kose , Rafael Rosales , Michael Paulitsch , Korbinian Hagn , Florian Geissler , Yang Peng , Gereon Hinz , Alois Knoll

Autonomous Vehicles (AVs) use natural images and videos as input to understand the real world by overlaying and inferring digital elements, facilitating proactive detection in an effort to assure safety. A crucial aspect of this process is…

A new robust and accurate approach for the detection and localization of flying objects with the purpose of highly dynamic aerial interception and agile multi-robot interaction is presented in this paper. The approach is proposed for use on…

In animal monitoring applications, both animal detection and their movement prediction are major tasks. While a variety of animal monitoring strategies exist, most of them rely on mounting devices. However, in real world, it is difficult to…

Artificial Intelligence · Computer Science 2016-10-24 Jun Xu , Gurkan Solmaz , Rouhollah Rahmatizadeh , Damla Turgut , Ladislau Boloni

Millimeter wave (mmWave) radar sensors are emerging as valid alternatives to cameras for the pervasive contactless monitoring of people in indoor spaces. However, commercial mmWave radars feature a limited range (up to $6$-$8$ m) and are…

Systems and Control · Electrical Eng. & Systems 2023-05-01 Marco Canil , Jacopo Pegoraro , Anish Shastri , Paolo Casari , Michele Rossi

Identifying individual animals in long-duration videos is essential for behavioral ecology, wildlife monitoring, and livestock management. Traditional methods require extensive manual annotation, while existing self-supervised approaches…

Computer Vision and Pattern Recognition · Computer Science 2026-01-15 Xuyang Fang , Sion Hannuna , Edwin Simpson , Neill Campbell

360{\deg} images can provide an omnidirectional field of view which is important for stable and long-term scene perception. In this paper, we explore 360{\deg} images for visual object tracking and perceive new challenges caused by large…

Computer Vision and Pattern Recognition · Computer Science 2023-07-28 Huajian Huang , Yinzhe Xu , Yingshu Chen , Sai-Kit Yeung

A tracking controller for unmanned aerial vehicles (UAVs) is developed to track moving targets undergoing unknown translational and rotational motions. The main challenges are to control both the relative positions and angles between the…

Robotics · Computer Science 2021-09-16 Hsin-Ai Hung , Hao-Huan Hsu , Teng-Hu Cheng

A video dataset that is designed to study fine-grained categorisation of pedestrians is introduced. Pedestrians were recorded "in-the-wild" from a moving vehicle. Annotations include bounding boxes, tracks, 14 keypoints with occlusion…

Computer Vision and Pattern Recognition · Computer Science 2016-05-23 David Hall , Pietro Perona

We present the Brown Pedestrian Odometry Dataset (BPOD) for benchmarking visual odometry algorithms in head-mounted pedestrian settings. This dataset was captured using synchronized global and rolling shutter stereo cameras in 12 diverse…

Computer Vision and Pattern Recognition · Computer Science 2021-12-28 David Charatan , Hongyi Fan , Benjamin Kimia

We study coarse-grained (group-level) alignment dynamics of individual-based animal group models for {\it heterogeneous} populations consisting of informed (on preferred directions) and uninformed individuals. The orientation of each…

Quantitative Methods · Quantitative Biology 2007-05-23 Sung Joon Moon , B. Nabet , Naomi E. Leonard , Simon A. Levin , I. G. Kevrekidis

Detecting diverse objects within complex indoor 3D point clouds presents significant challenges for robotic perception, particularly with varied object shapes, clutter, and the co-existence of static and dynamic elements where traditional…

Robotics · Computer Science 2025-07-24 Haichuan Li , Changda Tian , Panos Trahanias , Tomi Westerlund

Video anomaly detection is critical for public safety and security, yet remains highly challenging despite extensive research due to large variations in appearance, viewpoint, and scene dynamics. Among existing approaches, human pose-based…

Computer Vision and Pattern Recognition · Computer Science 2026-05-22 Inpyo Song , Jangwon Lee
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