Results 261 to 270 of about 1,235,187 (346)

Terrain Classification for Planetary Rovers Using Wireless In‐Wheel Sensor Modules and Machine Learning

Journal of Field Robotics, EarlyView.
ABSTRACT Safe and reliable mobility over different kinds of ground is important for planetary rovers on space missions. Since terrain changes might affect the mobility of the rover, energy consumption, and safety, detecting the type of ground in real‐time is vital.
Md Masrul Khan, Sultan Shaharea, Manseeb M. Mannaf, Shihab Ahemed, Fahim Islam Anik, Md Jarir Hossain, Helal An Nahiyan, Sourav Karmaker   +7 more
wiley   +1 more source

Autonomous Navigation in Large‐Scale Underground Environments Based on a Purely Topological Understanding of Tunnel Networks

Journal of Field Robotics, EarlyView.
ABSTRACT This work presents a non‐geometrical navigation approach based on a purely topological understanding of underground environments. By conceptualizing subterranean scenarios as a set of tunnels that intersect with each other, and taking a navigation approach based on topological instructions, we simplify the navigation problem to the sequential ...
Lorenzo Cano, Danilo Tardioli, Alejandro R. Mosteo   +2 more
wiley   +1 more source

Tourist sightings improve the precision of camera trap‐derived density estimates using spatial capture‐recapture models

Remote Sensing in Ecology and Conservation, EarlyView.
In this study, we combine tourist‐contributed images with camera trap‐based monitoring data to estimate leopard (Panthera pardus) population densities using multi‐session spatial capture–recapture models. We show that incorporating tourist observations improves precision and yields an overall density estimate of 7.02 leopards per 100 km2, while ...
Rachael S. Leeman, Robert S. Davis, Antonio Uzal, Heinrich Neumeyer, Rebecca A. Garbett, Joshua P. Twining, Richard W. Yarnell   +6 more
wiley   +1 more source

Robotics‐assisted acoustic surveys could deliver reliable, landscape‐level biodiversity insights

Remote Sensing in Ecology and Conservation, EarlyView.
Deploying and maintaining sensors is often a major bottleneck in collecting rapid biodiversity data. We tested whether autonomous hopping drones equipped with acoustic recorders could collect reliable biodiversity data in Costa Rica. Using 26,000+ hours of existing audio from 341 sites, with machine learning detections of 19 bird species and spider ...
Peggy A. Bevan, Cristina Banks‐Leite, Mirko Kovac, Jenna Lawson, Lorenzo Picinali, Sarab S. Sethi   +5 more
wiley   +1 more source

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Advances in Line-of-Sight Guidance for Path Following of Autonomous Marine Vehicles: An Overview

IEEE Transactions on Systems, Man, and Cybernetics: Systems, 2023
Autonomous marine vehicles (AMVs), including autonomous surface and underwater vehicles, are versatile means to explore, exploit, monitor, and protect marine resources and environments.
Nan Gu, Dan Wang, Zhouhua Peng, Jun Wang, Qing‐Long Han   +4 more
semanticscholar   +1 more source

NLOST: Non-Line-of-Sight Imaging with Transformer

Computer Vision and Pattern Recognition, 2023
Time-resolved non-line-of-sight (NLOS) imaging is based on the multi-bounce indirect reflections from the hidden objects for 3D sensing. Reconstruction from NLOS measurements remains challenging especially for complicated scenes. To boost the performance,
Yue Li, Jiayong Peng, Juntian Ye, Yueyi Zhang, Feihu Xu, Zhiwei Xiong   +5 more
semanticscholar   +1 more source

Service coverage optimization for facility location: considering line-of-sight coverage in continuous demand space

International Journal of Geographical Information Science, 2023
The reliable service coverage of many facilities or sensors used in smart city infrastructure is highly susceptible to obstructions in urban environments.
Xiaoya Ma, Xiaoyu Zhang, Xiang Zhao
semanticscholar   +1 more source

Fast Differentiable Transient Rendering for Non-Line-of-Sight Reconstruction

IEEE Workshop/Winter Conference on Applications of Computer Vision, 2023
Research into non-line-of-sight imaging problems has gained momentum in recent years motivated by intriguing prospective applications in e.g. medicine and autonomous driving.
Markus Plack, C. Callenberg, M. Schneider, M. Hullin   +3 more
semanticscholar   +1 more source

Cooperative robust line‐of‐sight guidance law based on high‐gain observers for active defense

International Journal of Robust and Nonlinear Control, 2023
In this paper, a three‐body confrontation problem of a target‐defender team against an attacker is studied in three dimensions. To eliminate the system deviation that arises from the linearization of the model, a second‐order nonlinear model with normal ...
Hongbing Luo, H. Ji, Xinghu Wang
semanticscholar   +1 more source

Line-of-Sight Networks

Combinatorics, Probability and Computing, 2009
Random geometric graphs have been one of the fundamental models for reasoning about wireless networks: one places n points at random in a region of the plane (typically a square or circle), and then connects pairs of points by an edge if they are within a fixed distance of one another.
Frieze, Alan, Kleinberg, Jon, Ravi, R., Debany, Warren   +3 more
openaire   +2 more sources