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Image-based pan-tilt camera control in a multi-camera surveillance environment
2003 International Conference on Multimedia and Expo. ICME '03. Proceedings (Cat. No.03TH8698), 2003In automated surveillance systems with multiple cameras, the system must be able to position the cameras accurately. Each camera must be able to pan-tilt such that an object detected in the scene is in a vantage position in the camera's image plane and subsequently capture images of that object. Typically, camera calibration is required.
null Ser-Nam Lim +2 more
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VLC Positioning Using Cameras with Unknown Tilting Angles
GLOBECOM 2017 - 2017 IEEE Global Communications Conference, 2017Prior 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).
Bingcheng Zhu +4 more
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Calibrating Pan-Tilt Cameras with Telephoto Lenses
2007Pan-tilt cameras are widely used in surveillance networks. These cameras are often equipped with telephoto lenses to capture objects at a distance. Such a camera makes full-metric calibration more difficult since the projection with a telephoto lens is close to orthographic.
Xinyu Huang, Jizhou Gao, Ruigang Yang
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Neural Background Subtraction for Pan-Tilt-Zoom Cameras
IEEE Transactions on Systems, Man, and Cybernetics: Systems, 2014We propose an extension of a neural-based background subtraction approach to moving object detection to the case of image sequences taken from pan-tilt-zoom (PTZ) cameras. The background model automatically adapts in a self-organizing way to changes in the scene background.
FERONE, Alessio, MADDALENA, LUCIA
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Detection of Dangerous Objects By Pan-tilt Camera
2019 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS), 2019Security cameras have increased in public facilities. The number of crimes has decreased by security cameras, but we will have too much data of cameras. In this paper, we have aim of security improvement. First, we search whether there are humans in images by OpenPose. We then obtain position of human's hands.
Yurika Fujii +3 more
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Intrusion detection and tracking with pan-tilt cameras
IET International Conference on Visual Information Engineering (VIE 2006), 2006The use of autonomous pan-tilt cameras as opposed to static cameras can dramatically enhance the range and effectiveness of surveillance systems, but effective tracking in such pan-tilt scenarios remains a challenge. Existing approaches for constructing mosaiced background models require accurate camera motion parameters, and online updates for the ...
A. Biswas +3 more
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Communication Module of 3D Camera Pan Tilt Zoom
Advanced Materials Research, 2013The 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 ...
Yue Dong +6 more
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Control Module of 3D Camera Pan Tilt Zoom
Applied Mechanics and Materials, 2013In 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 +8 more
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Implementation of Efficient Pan-Tilt-Zoom Camera Calibration
2009Abstract : 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
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