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This paper discusses spacecraft control using variable-speed CMGs. A new operational concept for VSCMGs is proposed. This new concept makes it possible to approximate the complex nonlinear system by a linear time-varying system (LTV). As a…

Optimization and Control · Mathematics 2018-09-19 Yaguang Yang

Real-time 6 DOF localization of bronchoscopes is crucial for enhancing intervention quality. However, current vision-based technologies struggle to balance between generalization to unseen data and computational speed. In this study, we…

Computer Vision and Pattern Recognition · Computer Science 2025-02-12 Qingyao Tian , Huai Liao , Xinyan Huang , Jian Chen , Zihui Zhang , Bingyu Yang , Sebastien Ourselin , Hongbin Liu

The spatial error model (SEM) is a type of simultaneous autoregressive (SAR) model for analysing spatially correlated data. Markov chain Monte Carlo (MCMC) is one of the most widely used Bayesian methods for estimating SEM, but it has…

Methodology · Statistics 2024-06-14 Anjana Wijayawardhana , David Gunawan , Thomas Suesse

Monocular Visual Odometry (MVO) provides a cost-effective, real-time positioning solution for autonomous vehicles. However, MVO systems face the common issue of lacking inherent scale information from monocular cameras. Traditional methods…

Robotics · Computer Science 2025-02-28 Yufei Wei , Sha Lu , Wangtao Lu , Rong Xiong , Yue Wang

Multi-view Stereo (MVS) with known camera parameters is essentially a 1D search problem within a valid depth range. Recent deep learning-based MVS methods typically densely sample depth hypotheses in the depth range, and then construct…

Computer Vision and Pattern Recognition · Computer Science 2021-12-07 Zhenxing Mi , Di Chang , Dan Xu

This paper proposes a virtual element method (VEM) combined with a second-order implicit-explicit scheme based on the scalar auxiliary variable (SAV) method for the incompressible magnetohydrodynamics (MHD) equations. We employ the BDF2…

Numerical Analysis · Mathematics 2024-10-25 Xiaojing Dong , Yunqing Huang , Tianwen Wang

Indoor monocular depth estimation helps home automation, including robot navigation or AR/VR for surrounding perception. Most previous methods primarily experiment with the NYUv2 Dataset and concentrate on the overall performance in their…

Computer Vision and Pattern Recognition · Computer Science 2024-08-27 Cho-Ying Wu , Quankai Gao , Chin-Cheng Hsu , Te-Lin Wu , Jing-Wen Chen , Ulrich Neumann

The use of supervised methods in space science have demonstrated powerful capability in classification tasks, but unsupervised methods have been less utilized for the clustering of spacecraft observations. We use a combination of…

The subject of this research is the development of an intelligent, integrated framework for the automated inspection of photovoltaic (PV) infrastructure that addresses the critical shortcomings of conventional methods, including thermal…

Computer Vision and Pattern Recognition · Computer Science 2026-01-21 Andrii Lysyi , Anatoliy Sachenko , Pavlo Radiuk , Mykola Lysyi , Oleksandr Melnychenko , Diana Zahorodnia

An important focus of current research in the field of Micro Aerial Vehicles (MAVs) is to increase the safety of their operation in general unstructured environments. Especially indoors, where GPS cannot be used for localization, reliable…

Computer Vision and Pattern Recognition · Computer Science 2015-05-12 T. Holzmann , R. Prettenthaler , J. Pestana , D. Muschick , G. Graber , C. Mostegel , F. Fraundorfer , H. Bischof

Spatial count data models are used to explain and predict the frequency of phenomena such as traffic accidents in geographically distinct entities such as census tracts or road segments. These models are typically estimated using Bayesian…

Methodology · Statistics 2020-10-19 Prateek Bansal , Rico Krueger , Daniel J. Graham

This research explores the use of Cosmic Microwave Background (CMB) radiation as a reference signal for Initial Orbit Determination (IOD). By leveraging the unique properties of CMB, this study introduces a novel method for estimating…

Instrumentation and Detectors · Physics 2025-04-04 Pedro K de Albuquerque , Andre R Kuroswiski , Annie S. Wu , Willer G. dos Santos , Paulo Costa

When analyzing plasma waves, a key parameter to determine is the phase velocity. It enables us to, for example, compute wavelengths, wave potentials, and determine the energy of resonant particles. The phase velocity of a wave, observed by…

Space Physics · Physics 2022-04-06 Konrad Steinvall , Yuri V. Khotyaintsev , Daniel B. Graham

Missing data is a common problem in real-world sensor data collection. The performance of various approaches to impute data degrade rapidly in the extreme scenarios of low data sampling and noisy sampling, a case present in many real-world…

Signal Processing · Electrical Eng. & Systems 2022-01-21 Charul Paliwal , Pravesh Biyani , Ketan Rajawat

Bird's eye view (BEV) representation is a new perception formulation for autonomous driving, which is based on spatial fusion. Further, temporal fusion is also introduced in BEV representation and gains great success. In this work, we…

Computer Vision and Pattern Recognition · Computer Science 2023-03-21 Zequn Qin , Jingyu Chen , Chao Chen , Xiaozhi Chen , Xi Li

The use of autonomous UAVs for surveillance purposes and other reconnaissance tasks is increasingly becoming popular and convenient.These tasks requires the ability to successfully ingress through the rectangular openings or windows of the…

Computer Vision and Pattern Recognition · Computer Science 2016-07-26 Abhinav Pachauri , Vikrant More , Pradeep Gaidhani , Nitin Gupta

We demonstrate the use of spatially encoded magnetic resonance to quantify ensemble dynamics of microscopic particles below the spatial resolution. By evaluating time series of k-space data-points, k-dependent motion patterns can be…

Instrumentation and Detectors · Physics 2018-05-16 Volker Herold , Thomas Kampf , Peter Michael Jakob

Air quality is a critical component of environmental health. Monitoring and analysis of particulate matter with a diameter of 2.5 micrometers or smaller (PM2.5) plays a pivotal role in understanding air quality changes. This study focuses…

Applications · Statistics 2025-07-10 Yanan Sun , Edward Valachovic

VIO has been widely used and researched to control and aid the automation of navigation of robots especially in the absence of absolute position measurements, such as GPS. However, when observable landmarks in the scene lie far away from…

Robotics · Computer Science 2020-09-11 Marco Karrer , Margarita Chli

Bird's-eye view (BEV) maps are an important geometrically structured representation widely used in robotics, in particular self-driving vehicles and terrestrial robots. Existing algorithms either require depth information for the geometric…

Computer Vision and Pattern Recognition · Computer Science 2024-03-26 Gianluca Monaci , Leonid Antsfeld , Boris Chidlovskii , Christian Wolf