Results 11 to 20 of about 5,240 (214)
A General Calibration Method for Dual-PTZ Cameras Based on Feedback Parameters
Applied Sciences, 2022 With the increasing application of dual-PTZ (Pan-Tilt-Zoom) cameras in intelligent unmanned systems, research regarding their calibration methods is becoming more and more important. The intrinsic and extrinsic parameters of dual-PTZ cameras continuously
Kang Mao +3 more
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Accurate and Practical Calibration of Multiple Pan-Tilt-Zoom Cameras for Live Broadcasts
IEEE Access, 2020 We aim to realize novel services for live broadcasts, including visualizing the 3D position of a subject, using multiple pan-tilt-zoom (PTZ) cameras. For this purpose, a camera calibration technique with high accuracy over a wide pan-tilt-zoom range and ...
Masanori Kano +5 more
doaj +1 more source
Real-time risk assessment of road vehicles based on inverse perspective mapping
Array, 2023 Pan/Tilt/Zoom (PTZ) cameras play an important role in traffic scenes due to their wide monitoring fields and high flexibility. However, since the focal length and angle of PTZ cameras change irregularly with the monitoring needs, it is difficult to ...
Qin Shi, Yan Chen, Haoxiang Liang
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Sensors, 2020 Crowd surveillance plays a key role to ensure safety and security in public areas. Surveillance systems traditionally rely on fixed camera networks, which suffer from limitations, as coverage of the monitored area, video resolution and analytic ...
Niccolò Bisagno +4 more
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Unconstrained Iris Acquisition and Recognition Using COTS PTZ Camera
EURASIP Journal on Advances in Signal Processing, 2010 Uniqueness of iris patterns among individuals has resulted in the ubiquity of iris recognition systems in virtual and physical spaces, at high security facilities around the globe. Traditional methods of acquiring iris patterns in commercial systems scan
Shreyas Venugopalan, Marios Savvides
doaj +2 more sources
Novel Visual Sensor Coverage and Deployment in Time Aware PTZ Wireless Visual Sensor Networks
Sensors, 2016 In this paper, we consider the visual sensor deployment algorithm in Pan-Tilt-Zoom (PTZ) Wireless Visual Sensor Networks (WVSNs). With PTZ capability, a sensor’s visual coverage can be extended to reduce the number of visual sensors that need to be ...
Florence G. H. Yap, Hong-Hsu Yen
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Foveation Pipeline for 360° Video-Based Telemedicine
Sensors, 2020 Pan-tilt-zoom (PTZ) and omnidirectional cameras serve as a video-mediated communication interface for telemedicine. Most cases use either PTZ or omnidirectional cameras exclusively; even when used together, images from the two are shown separately on 2D ...
Muhammad Firdaus Syawaludin +2 more
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Reproducible Evaluation of Pan-Tilt-Zoom Tracking [PDF]
, 2015 Tracking with a Pan-Tilt-Zoom (PTZ) camera has been a research topic in computer vision for many years. However, it is very difficult to assess the progress that has been made on this topic because there is no standard evaluation methodology.
Bergevin, Robert +5 more
core +2 more sources
A distributed camera system for multi-resolution surveillance [PDF]
, 2009 We describe an architecture for a multi-camera, multi-resolution surveillance system. The aim is to support a set of distributed static and pan-tilt-zoom (PTZ) cameras and visual tracking algorithms, together with a central supervisor unit.
Bellotto, Nicola +8 more
core +1 more source
Deep learning-based anomalous object detection system powered by microcontroller for PTZ cameras [PDF]
, 2018 Automatic video surveillance systems are usually designed to detect anomalous objects being present in a scene or behaving dangerously. In order to perform adequately, they must incorporate models able to achieve accurate pattern recognition in an image,
Benito Picazo, Jesús +4 more
core +1 more source