Results 331 to 340 of about 918,039 (380)

Probabilistic certification of pan-tilt-zoom camera surveillance systems

IEEE Conference on Decision and Control and European Control Conference, 2011
In this work a method to evaluate the performance of autonomous patrolling systems is introduced based on stochastic reachability with random sets. We consider set-valued models with stochastic dynamics for multiple pan-tilt-zoom (PTZ) cameras acting as pursuers and a single evader. The problem of maximizing the probability that the evader successfully
RAIMONDO, DAVIDE MARTINO, N. Kariotoglou, S. Summers, J. Lygeros   +3 more
openaire   +3 more sources

Reliability-based camera handoff for cooperative tracking with multiple pan-tilt cameras

International Journal of Control, Automation and Systems, 2013
We present a new handoff method for multiple pan-tilt cameras for mobile robot tracking in an indoor environment. Camera handoff is an important step to consistently maintain the visibility of a mobile robot with maximized object tracking accuracy. First, we propose a method to estimate the position of a mobile robot using single pan-tilt camera. Then,
Kyung H. Jeong, Jeong S. Choi, Beom Hee Lee   +2 more
openaire   +2 more sources

VLC Positioning Using Cameras with Unknown Tilting Angles

GLOBECOM 2017 - 2017 IEEE Global Communications Conference, 2017
Prior visible-light communication (VLC) positioning systems require the receiver to be placed towards a certain angle, or extra sensors like gyroscopes must be equipped to estimate the angle of the receiver. In this work, we propose a positioning scheme using cameras based on angle difference of arrival (ADOA).
Jun Yan, Jin-Yuan Wang, Bingcheng Zhu, Julian Cheng, Yongjin Wang   +4 more
openaire   +2 more sources

Communication Module of 3D Camera Pan Tilt Zoom

Advanced Materials Research, 2013
The purpose of this selected topic is for researching and designing a 3D TV high-precision camera PTZ (Pan/Tilt/Zoom) in order to have the functions of Remote double machine level shift, ticket reservation in any angle rotation.In this communication module design, NEC encoding infrared remote control decoding chip is used as a source for the remote ...
Huai Yu Xiao, Chun Zhi Wang, Yu Zhao, Fang Wei Cai, Yue Dong, Zhuo Min Yang, Liang Xu   +6 more
openaire   +2 more sources

Pan-Tilt Camera

Computer Vision, 2021

semanticscholar   +1 more source

Control Module of 3D Camera Pan Tilt Zoom

Applied Mechanics and Materials, 2013
In order to solve the low precision and difficult to sync, when the manual regulation of 3D Camera PTZ (Pan Tilt Zoom).The paper studies a 3D camera design (dual lens, horizontal support), and realize the remote control of double horizontal movement. The control module of the design based on single-chip stepper motor control theory, which can use the ...
Nan Hai Bao, Yue Pan, Yu Zhao, Yi Liu, Xin Xiang Zhang, Huai Yu Xiao, Chun Zhi Wang, Yue Dong, Liang Xu   +8 more
openaire   +2 more sources

Estimating Camera Tilt from Motion without Tracking

2017 14th Conference on Computer and Robot Vision (CRV), 2017
Most methods for automatic estimation of external camera parameters (e.g., tilt angle) from deployed cameras are based on vanishing points. This requires that specific static scene features, e.g., sets of parallel lines, be present and reliably detected, and this is not always possible.
Nada Elassal, James H. Elder
openaire   +2 more sources

Modeling of pan-tilt-zoom cameras for tracking measurement

SPIE Proceedings, 2010
A tracking measurement method is introduced using pan-tilt-zoom cameras based on machine vision theory. The modeling of a pan-tilt-zoom camera system is described. The model formula given represents the relationship between the coordinates of a spatial point and its corresponding image coordinates when the system focus, zoom, aperture and ...
Ruixue Xia, Yan-qiong Shi, Rongsheng Lu, Ning Chen   +3 more
openaire   +2 more sources

Neural Moving Object Detection by Pan-Tilt-Zoom Cameras

2013
Automated video surveillance using video analysis and understanding technology has become an important research topic in the area of computer vision. Most cameras used in surveillance are fixed, allowing to only look at one specific view of the surveilled area.
FERONE, Alessio, Maddalena L, PETROSINO, Alfredo   +2 more
openaire   +3 more sources

Implementation of Efficient Pan-Tilt-Zoom Camera Calibration [PDF]

, 2009
Abstract : Pan-tilt-zoom (PTZ) cameras, frequently used in both online and automated surveillance applications, require accurate knowledge of camera parameters in order to accurately register autonomously tracked objects to a world model. Due to imprecision in the PTZ mechanism, these parameters cannot be obtained from PTZ control commands but must be ...
Philip David, Nicholas Fung
openaire   +1 more source