Results 181 to 190 of about 5,240 (214)
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Amphibious Target Tracking with Single PTZ Camera
2015 International Conference on Intelligent Information Hiding and Multimedia Signal Processing (IIH-MSP), 2015Recently, the researches about the video surveillance for constructing a safety environment and ecological investigation are highly demanded. In the video surveillance, the PTZ cameras are often applied to extract the close-up views by controlling the pan, tilt, and zoom operations in a large area.
Cheng-Chang Lien, Wang Jian Xiang
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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 ...
S. Thirthala, S.N. Sinha, M. Pollefeys
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Sensor planning for PTZ cameras using the probability of camera overload
2008 19th International Conference on Pattern Recognition, 2008Most existing sensor planning algorithms find it difficult to tackle the discrepancy between a PTZ camera?s limited instant field of view (FOV) and panoramic achievable FOV. In this paper, we introduce the probability of camera overload to resolve this discrepancy and present a sensor planning algorithm for PTZ cameras under the same framework as ...
Yi Yao +5 more
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Recent advances in PTZ camera tracking
2012Videosurveillance con PTZ ...
DEL BIMBO, ALBERTO +3 more
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Self-calibration of a PTZ Camera Using New LMI Constraints
2013In this paper, we propose a very reliable and flexible method for self-calibrating rotating and zooming cameras - generally referred to as PTZ (Pan-Tilt-Zoom) cameras. The proposed method employs a Linear Matrix Inequality (LMI) resolution approach and allows extra tunable constraints on the intrinsic parameters to be taken into account during the ...
Rameau, Francois +4 more
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Multiresolution Depth Map Estimation in PTZ Camera Network
2013In this chapter, an active stereo vision system composed of two pan-tilt-zoom (PTZ) cameras is proposed for estimating multiresolution depth map for a large and complex scene. The rectification of stereo images is performed based on the sigmoid interpolation with a set of neural networks.
Sanjeev Kumar +2 more
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Integrative oncology: Addressing the global challenges of cancer prevention and treatment
Ca-A Cancer Journal for Clinicians, 2022Jun J Mao,, Msce +2 more
exaly