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Reconfiguration of Pan-tilt-zoom Cameras

Reconfiguration of Pan-tilt-zoom Cameras
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Efficient mixed representation of active and passive motion in the mouse visual thalamus during natural behaviour

Ebrahimi A, Hogan M, Jin F, Martial F, Huang Q, Joshi R, Shirvanian K, Burgess M, Montazeri Z, Petersen R, Storchi R.   +10 more
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Keeping a Pan-Tilt-Zoom Camera Calibrated

IEEE Transactions on Pattern Analysis and Machine Intelligence, 2013
Pan-tilt-zoom (PTZ) cameras are pervasive in modern surveillance systems. However, we demonstrate that the (pan, tilt) coordinates reported by PTZ cameras become inaccurate after many hours of operation, endangering tracking and 3D localization algorithms that rely on the accuracy of such values. To solve this problem, we propose a complete model for a
Ziyan, Wu, Richard J, Radke
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Cone beam SPECT reconstruction with camera tilt

Physics in Medicine and Biology, 1989
The authors modified the cone beam filtered backprojection algorithm of L.A. Feldkamp et al. (1984) and applied it to the symmetric tilt-angle case. Both the modifications of the algorithm and a single preliminary test are reported.
S H, Manglos, R J, Jaszczak, K L, Greer
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Background modelling for pan tilt camera

2014 22nd Signal Processing and Communications Applications Conference (SIU), 2014
Background modeling is commonly used in image processing applications. Stationary camera assumption, the basic assumption of background modeling, becomes invalid in some cases such as movement of camera, movement of platform on which the camera is mounted, oscillation of camera due to wind etc.
Alperen Yildirim, Ali Ziya Alkar, Kutalmis Gokalp Ince   +2 more
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Active camera calibration using pan, tilt and roll

Proceedings of 1995 IEEE International Conference on Robotics and Automation, 1997
Three dimensional vision applications, such as robot vision, require modeling of the relationship between the two-dimensional images and the three-dimensional world. Camera calibration is a process which accurately models this relationship. The calibration procedure determines the geometric parameters of the camera, such as focal length and center of ...
A, Basu, K, Ravi
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Direct cone beam SPECT reconstruction with camera tilt

Physics in Medicine and Biology, 1993
A 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.
J, Li, R J, Jaszczak, K L, Greer, R E, Coleman, Z J, Cao, B M, Tsui   +5 more
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Tracking of flying insects using pan-tilt cameras

Journal of Neuroscience Methods, 2000
Potent 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.
S N, Fry, M, Bichsel, P, Müller, D, Robert   +3 more
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