Results 21 to 30 of about 5,240 (214)

Coaxial optical structure for iris recognition from a distance [PDF]

open access: yes, 2011
Supporting an unconstrained user interface is an important issue in iris recognition. Various methods try to remove the constraint of the iris being placed close to the camera, including portal-based and pan-tiltzoom (PTZ)-based solutions.
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core   +1 more source

Learning proactive control strategies for PTZ cameras [PDF]

open access: yes2011 Fifth ACM/IEEE International Conference on Distributed Smart Cameras, 2011
This paper introduces a camera network capable of automatically learning proactive control strategies that enable a set of active pan/tilt/zoom (PTZ) cameras, supported by wide-FOV passive cameras, to provide persistent coverage of the scene. When a situation is encountered for the first time, a reasoning module performs PTZ camera assignments and ...
Wiktor Starzyk, Faisal Z. Qureshi
openaire   +3 more sources

Moving Target Detection and Active Tracking with a Multicamera Network

open access: yesDiscrete Dynamics in Nature and Society, 2014
We propose a systematic framework for Intelligence Video Surveillance System (IVSS) with a multicamera network. The proposed framework consists of low-cost static and PTZ cameras, target detection and tracking algorithms, and a low-cost PTZ camera ...
Long Zhao   +4 more
doaj   +1 more source

Visual Sensor Networks for Indoor Real-Time Surveillance and Tracking of Multiple Targets

open access: yesSensors, 2022
The recent trend toward the development of IoT architectures has entailed the transformation of the standard camera networks into smart multi-device systems capable of acquiring, elaborating, and exchanging data and, often, dynamically adapting to the ...
Jacopo Giordano   +3 more
doaj   +1 more source

Geometric Recognition of Moving Objects in Monocular Rotating Imagery Using Faster R-CNN

open access: yesRemote Sensing, 2020
Moving object detection and tracking from image sequences has been extensively studied in a variety of fields. Nevertheless, observing geometric attributes and identifying the detected objects for further investigation of moving behavior has drawn less ...
Tzu-Yi Chuang   +3 more
doaj   +1 more source

Optical mapping of neuronal activity during seizures in zebrafish [PDF]

open access: yes, 2017
Mapping neuronal activity during the onset and propagation of epileptic seizures can provide a better understanding of the mechanisms underlying this pathology and improve our approaches to the development of new drugs.
Fornetto, C   +10 more
core   +3 more sources

Saliency Detection with Moving Camera via Background Model Completion

open access: yesSensors, 2021
Detecting saliency in videos is a fundamental step in many computer vision systems. Saliency is the significant target(s) in the video. The object of interest is further analyzed for high-level applications. The segregation of saliency and the background
Yu-Pei Zhang, Kwok-Leung Chan
doaj   +1 more source

In vivo detection of cortical optical changes associated with seizure activity with optical coherence tomography. [PDF]

open access: yes, 2012
The most common technology for seizure detection is with electroencephalography (EEG), which has low spatial resolution and minimal depth discrimination. Optical techniques using near-infrared (NIR) light have been used to improve upon EEG technology and
Binder, Devin K   +8 more
core   +1 more source

Visual Object Servo Tracking Based on the Particle Filter Method Using a Pan-Tilt-Zoom Camera

open access: yesInternational Journal of Advanced Robotic Systems, 2012
We present a servo control model in a particle filter to realize robust visual object tracking using Pan-Tilt-Zoom (PTZ) camera. The particle filter method has attracted much attention due to its robust tracking performance in cluttered environments ...
Cao Songxiao, Wang Xuanyin, Xiang Ke
doaj   +1 more source

A sensing platform for physiological and contextual feedback to tennis athletes [PDF]

open access: yes, 2009
In this paper we describe our work on creating a multi-modal sensing platform for providing feedback to tennis coaches and players. The platform includes a fixed installation around a tennis court consisting of a video camera network and a localisation ...
Connaghan, Damien   +8 more
core   +2 more sources

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