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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.
Momoyo Ito +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 ...
Arindam Biswas +3 more
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The 'Tilted Camera' perspective projection of the Earth
The Cartographic Journal, 1990AbstractThe perspective projection of the Earth onto a tilted plane is useful in simulating photographs taken from Earth orbiting space vehicles. A new approach to the calculation of projection coordinates is demonstrated by using vector geometry.
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Upsampling visual servoing for a pan and tilt camera
2007 IEEE International Conference on Robotics and Biomimetics (ROBIO), 2007This paper deals with visual servoing for a pan and tilt camera embarked in a drone. Video is transmitted to the ground where images are processed on a PC, and turret controls are sent back to an on board local loop in the drone. The objective is to track any fixed object on the ground without knowledge about shape or texture and to keep it centered in
Gerard Bouvier +3 more
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Calibrating Pan-Tilt Cameras with Telephoto Lenses [PDF]
, 2007 Pan-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.
Ruigang Yang, Jizhou Gao, Xinyu Huang
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Practical self-calibration of pan-tilt cameras
IEE Proceedings - Vision, Image, and Signal Processing, 2001The authors propose a practical self-calibration method of rotating and zooming cameras. The problem with previous methods occurs when the camera motion is almost fully zoomed with very little rotation, which is called the `near-degenerate' configuration. In that case, the solutions become unstable and rotation angles cannot be calculated.
Kim, H, Hong, KS
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Calibration of Pan-Tilt-Zoom (PTZ) Cameras and Omni-Directional Cameras
2005 IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR'05), 2005In the first part we discuss the problem of recovering the calibration of a network of pan-tilt-zoom cameras. The intrinsic parameters of each camera over its full range of zoom settings are estimated through a two step procedure. We first determine the intrinsic parameters at the camera's lowest zoom setting very accurately by capturing an extended ...
Sudipta N. Sinha +2 more
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Tracking of flying insects using pan-tilt cameras
Journal of Neuroscience Methods, 2000Potent and affordable video and computer systems for automatic data acquisition are becoming increasingly important in behavioural neuroscience. It has remained challenging, however, to acquire data from small and fast-moving animals, such as insects in flight, due to the limited spatial and temporal resolution of the systems currently available.
M. Bichsel +3 more
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Direct cone beam SPECT reconstruction with camera tilt
Physics in Medicine and Biology, 1993A filtered backprojection (FBP) algorithm is derived to perform cone beam (CB) single-photon emission computed tomography (SPECT) reconstruction with camera tilt using circular orbits. This algorithm reconstructs the tilted angle CB projection data directly by incorporating the tilt angle into it.
Zong-Jian Cao +5 more
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Practical pure pan and pure tilt camera calibration
2008 19th International Conference on Pattern Recognition, 2008Often the deployed pan-tilt-zoom (PTZ) cameras undergo a pure pan or pure tilt rotation. This is a degenerate case for most of the PTZ camera calibration methods. That is, under this motion, the estimated camera parameters are not unique. In this regard, we present a novel camera calibration method to estimate five camera parameters from these pure pan/
Junejo, Imran N., Foroosh, Hassan
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