Results 251 to 260 of about 2,188,094 (296)
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Calibration of radionuclide calibrators
International Journal of Nuclear Medicine and Biology, 1983Abstract An evaluation of the efficiency of a radionuclide calibrator as a function of photon energy is given. Difficulties arising at low energies can be overcome by simultaneous measurements of the calibration sources with and without an Fe-absorber.
H. Schrader, H.M. Weib
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Solar Physics, 2000
n this paper a procedure to calibrate dopplergrams is presented. This procedure is instrument independent and is based on the main topological characteristics of solar rotation. It is reliable in those regions on the solar disk where the sensitivity can be considered linear in the east-west direction (that is, out to 0.75 solar radius for most ...
PF Moretti, the MOF Development Group
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n this paper a procedure to calibrate dopplergrams is presented. This procedure is instrument independent and is based on the main topological characteristics of solar rotation. It is reliable in those regions on the solar disk where the sensitivity can be considered linear in the east-west direction (that is, out to 0.75 solar radius for most ...
PF Moretti, the MOF Development Group
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Calibration and Calibration Methods
1989Every EEG begins and ends with a calibration. Frequently, the calibration becomes so routine a procedure that it is easy to pass over it with little thought to its meaning and purpose. This is especially easy to do when the machine used contains from 18 to 24 channels, and one is eager to get on to the important part of the record, namely, the EEGs ...
Frank H. Duffy +2 more
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Self-Calibrating Polarising Radiometric Calibration
2018 IEEE/CVF Conference on Computer Vision and Pattern Recognition, 2018We present a self-calibrating polarising radiometric calibration method. From a set of images taken from a single viewpoint under different unknown polarising angles, we recover the inverse camera response function and the polarising angles relative to the first angle.
Daniel Teo Guangwei +3 more
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Geometrical calibration of multispectral calibration
2015 12th International Conference on Ubiquitous Robots and Ambient Intelligence (URAI), 2015In this paper, we introduce a novel calibration pattern board for visible and thermal camera calibration. Our pattern board is easy to make, handy to move and efficient to heat. Also, it preserves a uniform thermal radiance for a long time. Proposed method can be employed in single- and multi- spectral camera system, and also used in the splitter or ...
Namil Kim +5 more
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Calibration artefacts: Phase only calibration
2015 1st URSI Atlantic Radio Science Conference (URSI AT-RASC), 2015Calibration is the process by which we estimate and correct instrumental and environmental errors in interferometric data. We usually perform calibration by finding the antenna gains that minimize the difference between our observed and predicted visibilities. We require a sky model to create predicted visibilities.
Trienko L. Grobler, Oleg M. Smirnov
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Collaborative calibration: extending shape from motion calibration
Proceedings of International Conference on Robotics and Automation, 2002In this paper, we summarize recent research results from a new technique of sensor calibration called Shape from Motion Calibration. We first present the basic technique, which is an eigenspace analysis, and show that it includes the rig- or of least squares without the full burden of measuring all the applied inputs.
Voyles, Richard M., Khosla, Pradeep
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System Calibration Through Self-Calibration
2001The method of has proved to be one of the most powerful calibration techniques. If used in the context of a general bundle solution it provides for object space coordinates or object features, camera exterior and interior orientation parameters, and models other systematic errors as well. Therefore, because of its flexibility, it may be used in stereo,
Armin Gruen, Horst A. Beyer
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Interferometric calibrations and astronomical calibrators
New Astronomy Reviews, 2008Abstract This chapter gives some indications on the selection of suitable astronomical calibrators for interferometric observations. After an introduction to interferometric calibrations, we will focus on the criteria, steps and tools developed by ESO to prepare VLTI observations and to select calibrators.
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Machine tool calibration: Measurement, modeling, and compensation of machine tool errors
International Journal of Machine Tools and Manufacture, 2023Wei Gao, Alkan, 大輔 河野
exaly