Results 161 to 170 of about 5,240 (214)

Surprisal-aware scheduling of PTZ cameras

2009 Third ACM/IEEE International Conference on Distributed Smart Cameras (ICDSC), 2009
An approach is presented for scheduling PTZ cameras on guard tours with two or more fields of view. In contrast to the target tracking of previous work, this approach seeks to optimise the coverage of the area under surveillance. Specifically, the aim is to minimise the surprisal (self-information) of events in unobserved fields of view.
Henry Detmold, Anton van den Hengel, Anthony Dick, Christopher Madden, Alex Cichowski, Rhys Hill   +5 more
openaire   +1 more source

Gaze estimation using Kinect/PTZ camera

2012 IEEE International Symposium on Robotic and Sensors Environments Proceedings, 2012
This paper describes a novel method for eye-gaze estimation under normal head movement. In this method, head position and orientation are acquired by Kinect while eye direction is obtained by PTZ camera. We propose the Bayesian multinomial logistic regression based on a variational approximation to construct a gaze mapping function from head and eyes ...
Reza Jafari, Djemel Ziou
openaire   +1 more source

Panoramic background model for PTZ camera

2010 3rd International Congress on Image and Signal Processing, 2010
PTZ cameras have been widely applied in many industrial applications. In the systems of video intelligent surveillance, it is a challenging task to segment and track fore-ground(moving) objects with the PTZ cameras automatically, since the background model cannot be easily computed by the traditional algorithms for fixed camera.
Kang Xue, Yue Liu, Jing Chen, Qin Li
openaire   +1 more source

Proactive PTZ Camera Control

2011
We present a visual sensor network—comprising wide field-of-view (FOV) passive cameras and pan/tilt/zoom (PTZ) active cameras—capable of automatically capturing closeup video of selected pedestrians in a designated area. The passive cameras can track multiple pedestrians simultaneously and any PTZ camera can observe a single pedestrian at a time.
Faisal Z. Qureshi, Demetri Terzopoulos
openaire   +1 more source

Stereo vision using two PTZ cameras

Computer Vision and Image Understanding, 2008
The research of traditional stereo vision is mainly based on static cameras. As PTZ (Pan-Tilt-Zoom) cameras are able to obtain multi-view-angle and multi-resolution information, they have received more and more concern in both research and real application.
Dingrui Wan, Jie Zhou
openaire   +1 more source

A tracking algorithm for PTZ cameras

IFAC Proceedings Volumes, 2010
Abstract This paper presents a tracking algorithm for PTZ (pan-tilt-zoom) cameras. The tracked objects are Mini 1:43 scale RC cars that have been described by a unicycle model. The algorithm is based on the combination of EKF (Extended Kalman Filter) and PF (Particle Filters). A scanning procedure is used to explore the environment.
RAIMONDO, DAVIDE MARTINO, GASPARELLA SIMONE, STURZENEGGER DAVID, LYGEROS JOHN, MORARI MANFRED   +4 more
openaire   +2 more sources

Reactive Object Tracking with a Single PTZ Camera

2010 20th International Conference on Pattern Recognition, 2010
In this paper we describe a novel approach to reactive tracking of moving targets with a pan-tilt-zoom camera. The approach uses an extended Kalman filter to jointly track the object position in the real world, its velocity in 3D and the camera intrinsics, in addition to the rate of change of these parameters.
Al Haj, Murad, Bagdanov, Andrew D., Gonzàlez, Jordi, Roca, F. Xavier   +3 more
openaire   +2 more sources

Stereo Localization Using Dual PTZ Cameras

2009
In this paper, we present a cooperative stereo system based on two pant-tilt-zoom (PTZ) cameras that can localize a moving target in a complex environment. Given an approximate target position that can be estimated by a fixed camera with a wide field of view, two PTZ cameras with a large baseline are pointed toward the target in order to estimate ...
KUMAR S, MICHELONI, Christian, PICIARELLI, Claudio   +2 more
openaire   +1 more source

REAL TIME FOREGROUND OBJECT DETECTION USING PTZ CAMERA

Proceedings of the Fourth International Conference on Computer Vision Theory and Applications, 2009
An important research is done to exploit the characteristics of PTZ cameras. These cameras allow motorized cover a wide field of view. A classic application of these cameras is to image mosaicing. But they can also be used to track moving objects. In this paper, we present an original approach for performing the registration, adapted to the case of ...
Robinault, Lionel, Bres, Stéphane, Miguet, Serge   +2 more
openaire   +2 more sources

Collaborative Sensing in a Distributed PTZ Camera Network

IEEE Transactions on Image Processing, 2012
The performance of dynamic scene algorithms often suffers because of the inability to effectively acquire features on the targets, particularly when they are distributed over a wide field of view. In this paper, we propose an integrated analysis and control framework for a pan, tilt, zoom (PTZ) camera network in order to maximize various scene ...
Chong, Ding, Bi, Song, Akshay, Morye, Jay A, Farrell, Amit K, Roy-Chowdhury   +4 more
openaire   +2 more sources