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Optimizing PTZ camera calibration from two images
Machine Vision and Applications, 2011In this paper, we address the problem of calibrating an active pan–tilt–zoom (PTZ) camera. In this regard, we make three main contributions: first, for the general camera rotation, we provide a novel solution that yields four independent constraints from only two images, by directly decomposing the infinite homography using a series of Givens rotations.
Junejo, Imran N., Foroosh, Hassan
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DeepPTZ: Deep Self-Calibration for PTZ Cameras
2020 IEEE Winter Conference on Applications of Computer Vision (WACV), 2020Rotating and zooming cameras, also called PTZ (Pan-Tilt-Zoom) cameras, are widely used in modern surveillance systems. While their zooming ability allows acquiring detailed images of the scene, it also makes their calibration more challenging since any zooming action results in a modification of their intrinsic parameters.
Chaoning Zhang +5 more
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Foreground segmentation with PTZ camera: a survey
Multimedia Tools and Applications, 2018The alertness of terrorism in the present is greater than that in the past b with reference to the incident of September 11. Still now, there has been a fight against terrorism and that has triggered a novel effort to locate the enhanced approaches with a higher-end camera.
E. Komagal, B. Yogameena
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Practical PTZ camera calibration using Givens rotations
2008 15th IEEE International Conference on Image Processing, 2008Due to their ease of use and availability, pan-tilt-zoom (PTZ) cameras are everywhere. However, in order to utilize these cameras for a meaningful application, it is necessary that these cameras be calibrated. In this paper, we address the problem of calibrating such a rotating and zooming camera and present a simple yet novel solution. We show that in
Junejo, Imran N., Foroosh, Hassan
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Target Trajectory Prediction in PTZ Camera Networks
2013 IEEE Conference on Computer Vision and Pattern Recognition Workshops, 2013In this paper we compare different mechanisms for the prediction of targets position inside a PTZ camera network. The goal is to predict the next location of each target with higher accuracy, in order to better plan the movements of the cameras at the next time step.
Vahab Akbarzadeh +2 more
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High-Quality Real Time Motion Detection Using PTZ Cameras
2006 IEEE International Conference on Video and Signal Based Surveillance, 2006The approaches based on background difference are the most used with fixed cameras to perform motion detection, because of the high quality of the segmentation achieved. However, real time requirements prevent most of the algorithms proposed in literature to exploit the background difference with Pan-Tilt-Zoom (PTZ) cameras in real world applications ...
BEVILACQUA, ALESSANDRO, AZZARI, PIETRO
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Moving shadow detection using two PTZ cameras
2018 International Conference on Image and Video Processing, and Artificial Intelligence, 2018The research of traditional shadow detection is mainly based on the stationary camera. As the dual PTZ camera system can obtain both the multi-view and multi-resolution information, it has received more and more attention in real surveillance applications.
Zhenqiang Bao +3 more
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Cooperative Object Tracking with Multiple PTZ Cameras
14th International Conference on Image Analysis and Processing (ICIAP 2007), 2007Research in visual surveillance systems is shifting from using few stationary, passive cameras to employing large heterogeneous sensor networks. One promising type of sensor in particular is the Pan-Tilt-Zoom (PTZ) camera, which can cover a potentially much larger area than passive cameras, and can obtain much higher resolution imagery through zoom ...
I. Everts, Sebe, Niculae, G. Jones
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Hierarchical face tracking by using PTZ camera
Sixth IEEE International Conference on Automatic Face and Gesture Recognition, 2004. Proceedings., 2004Since, the basic configuration of the facial caricaturing system PICASSO has been constructed, it is strongly expected to get sufficient input image from a person who is naturally performing in front of the PICASSO camera system. From this viewpoint, we developed a face tracking PC system for capturing sufficient facial image especially in size by ...
T. Funahasahi +3 more
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PTZ camera calibration for Augmented Virtual Environments
2009 IEEE International Conference on Multimedia and Expo, 2009Augmented Virtual Environments (AVE) are very effective in the application of surveillance, in which multiple video streams are projected onto a 3D urban model for better visualization and comprehension of the dynamic scenes. One of the key issues in creating such systems is to estimate the parameters of each camera including the intrinsic parameters ...
Lu Wang, Suya You, Ulrich Neumann
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