Results 221 to 230 of about 36,319 (263)

Auto-calibrating analog timer for on-chip testing

International Test Conference 1999. Proceedings (IEEE Cat. No.99CH37034), 2003
A practical approach for generating precise and slow analog ramps to be used for time-domain analog testing and for monotonicity and histogram test of ADCs is presented. The technique uses a discrete-time adaptive scheme to calibrate the ramp generator. Two implementations of the approach are proposed: one is entirely single-ended and the second uses a
Benoit Provost, Edgar Sánchez-Sinencio
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Camera auto-calibration from articulated motion

2007 IEEE Conference on Advanced Video and Signal Based Surveillance, 2007
This paper presents a novel auto-calibration method from unconstrained human body motion. It relies on the underlying biomechanical constraints associated with human bipedal locomotion. By analysing positions of key points during a sequence, our technique is able to detect frames where the human body adopts a particular posture which ensures the ...
Paul Kuo, Jean-Christophe Nebel, Dimitrios Makris 0001   +2 more
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Online Auto-Calibration in Man-Made Worlds

DICTA ' 05. Proceedings Digital Image Computing: Technqiues and Applications, 2005., 2005
This paper proposes a method to auto-calibrate a static camera in man-made worlds. The calibration is done with vanishing points which are estimated with line segments. Instead of a single image, the method uses constantly acquired images from a camera.
Roman P. Pflugfelder, Horst Bischof
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Auto-calibration for a parallel manipulator with sensor redundancy

2003 IEEE International Conference on Robotics and Automation (Cat. No.03CH37422), 2004
In this paper, we propose two algorithms for the auto-calibration of the home position or the joint angle offsets for a parallel manipulator by utilizing the extra sensor(s) information (sensor redundancy), sampling over the workspace, and optimizing a suitably chosen cost function, without resorting to any other external equipment.
Yiu Kuen Yiu, Jian Meng, Zexiang Li 0001
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Auto‐calibration approach for k–t SENSE

Magnetic Resonance in Medicine, 2013
PurposeThe goal of this work is to increase the spatial resolution of training data, used by reconstruction methods such as k–t SENSE in order to calculate the missing data in a series of dynamic images, without compromising their temporal resolution or acquisition time.TheoryThe k‐t SENSE method allows dynamic imaging at high acceleration factors with
Irene P, Ponce, Martin, Blaimer, Felix A, Breuer, Mark A, Griswold, Peter M, Jakob, Peter, Kellman   +5 more
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THE “SYMMETRISCHE OPTIMUM” AND THE AUTO-CALIBRATION OF PID CONTROLLERS

IFAC Proceedings Volumes, 1992
Abstract The paper presents a method for the auto-calibration of PI and PID controllers when one point of the frequency characteristics (gain and phase) of the controlled plant is identified (for example using a closed loop relay experiment). The tuning rules are inspired from the "Symmetrische Optimum" (the symmetrical optimum) principles introduced
I.D. Landau, A. Voda
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A New Method for Auto-calibrated Object Tracking

2005
Ubiquitous computing technologies which are cheap and easy to use are more likely to be adopted by users beyond the ubiquitous computing community. We present an ultrasonic-only tracking system that is cheap to build, self-calibrating and self-orientating, and has a convenient form factor. The system tracks low-power tags in three dimensions.
Paul Duff, Michael R. McCarthy, Angus Clark, Henk L. Muller, Cliff Randell, Shahram Izadi, Andy Boucher 0002, Andy Law, Sarah Pennington, Richard Swinford   +9 more
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A Fully Integrated Auto-Calibrated SuperRegenerative Receiver

2006 IEEE International Solid State Circuits Conference - Digest of Technical Papers, 2006
A fully integrated super-regenerative receiver in 0.13mum CMOS with on-chip quench generation is described. Auto-calibration improves the selectivity of a Q-enhanced filter and the sensitivity of super-regeneration. The prototype consumes 2.8mW, or 5.6nJ per received bit, at 500kb/s, and has a turn-on time of 83.6mus, a channel spacing of 10MHz, and a ...
Jia-Yi Chen, Michael P. Flynn, John P. Hayes   +2 more
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Scene Understanding for Auto-Calibration of Surveillance Cameras

2014
In the last decade, several research results have presented formulations for the auto-calibration problem. Most of these have relied on the evaluation of vanishing points to extract the camera parameters. Normally vanishing points are evaluated using pedestrians or the Manhattan World assumption i.e. it is assumed that the scene is necessarily composed
Lucas Teixeira, Fabiola Maffra, Atta Badii   +2 more
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Auto-Calibration of a Robotic Head

1997
Visual sensor calibration represents the problem of determining the parameters of the transformation between the 3D information of the imaged object in space and the 2D observed image. Such a relationship is mandatory for 3D vision. More precisely, we have to know the location (translation) and attitude (rotation) of the visual sensor with respect to ...
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