Results 11 to 20 of about 297,738 (268)

Pedestrian Detection and Tracking from Low-Resolution Unmanned Aerial Vehicle Thermal Imagery

open access: yesSensors, 2016
Driven by the prominent thermal signature of humans and following the growing availability of unmanned aerial vehicles (UAVs), more and more research efforts have been focusing on the detection and tracking of pedestrians using thermal infrared images ...
Yalong Ma   +4 more
doaj   +1 more source

Multi-UAV Area Coverage Based on Relative Localization: Algorithms and Optimal UAV Placement

open access: yesSensors, 2021
This paper is concerned with relative localization-based optimal area coverage placement using multiple unmanned aerial vehicles (UAVs). It is assumed that only one of the UAVs has its global position information before performing the area coverage task ...
Ziyong Zhang   +3 more
doaj   +1 more source

A Hybrid Vehicle Detection Method Based on Viola-Jones and HOG + SVM from UAV Images

open access: yesSensors, 2016
A new hybrid vehicle detection scheme which integrates the Viola-Jones (V-J) and linear SVM classifier with HOG feature (HOG + SVM) methods is proposed for vehicle detection from low-altitude unmanned aerial vehicle (UAV) images.
Yongzheng Xu   +4 more
doaj   +1 more source

Cooperativity in transcriptional control [PDF]

open access: yesCurrent Biology, 2001
The regulation of eukaryotic genes almost always depends on cooperative interactions between factors. This is essential to allow the rich array of transcriptional responses required for both development and adaptation to the environment. We are only beginning to decipher the mechanisms governing this cooperativity, which include processes such as the ...
openaire   +2 more sources

Car Detection from Low-Altitude UAV Imagery with the Faster R-CNN

open access: yesJournal of Advanced Transportation, 2017
UAV based traffic monitoring holds distinct advantages over traditional traffic sensors, such as loop detectors, as UAVs have higher mobility, wider field of view, and less impact on the observed traffic.
Yongzheng Xu   +4 more
doaj   +1 more source

Analytical Model for the Change of Travel Time Savings With Waiting Time and Service Level

open access: yesIEEE Access, 2019
An extended classical time allocation model with travel time reliability constraint is proposed in this study. The valuation function of travel time savings is deduced, and the relationship between the value of travel time savings and other social ...
Junjie Zhang   +4 more
doaj   +1 more source

Cooperative Obstacle Avoidance for Multiple UAVs Using Spline_VO Method

open access: yesSensors, 2022
In order to solve multiple unmanned aerial vehicle (UAV) dynamic collision avoidance, a cooperative obstacle avoidance algorithm considering UAV’s kinematic constraints has been developed.
Mingzhu Peng, Wei Meng
doaj   +1 more source

Distributed Consensus Estimation for Networked Multi-Sensor Systems under Hybrid Attacks and Missing Measurements

open access: yesSensors
Cyber-security research on networked multi-sensor systems is crucial due to the vulnerability to various types of cyberattacks. For the development of effective defense measures, attention is required to gain insight into the complex characteristics and ...
Zhijian Cheng   +4 more
doaj   +1 more source

The Effect of Connected Vehicle Environment on Global Travel Efficiency and Its Optimal Penetration Rate

open access: yesJournal of Advanced Transportation, 2017
The effect of connected vehicle environment on the transportation systems and the relationship between the penetration rate of connected vehicle and its efficiency are investigated in this study.
Rongjian Dai   +3 more
doaj   +1 more source

Trajectory prediction of human-driven vehicles on the basis of risk field theory and interaction multiple models

open access: yesJournal of Intelligent and Connected Vehicles
This study focuses on predicting the motion states and intentions of HDVs at unsignalized intersections. On the basis of a risk field-driven driving behavior model for uncontrolled intersections, multiple motion hypotheses are formulated to characterize ...
Zhaojie Wang   +4 more
doaj   +1 more source

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