Results 11 to 20 of about 1,089,333 (288)
Geometric video projector auto-calibration
2009 IEEE Computer Society Conference on Computer Vision and Pattern Recognition Workshops, 2009 In this paper we address the problem of geometric calibration of video projectors. Like in most previous methods we also use a camera that observes the projection on a planar surface. Contrary to those previous methods, we neither require the camera to be calibrated nor the presence of a calibration grid or other metric information about the scene.
Draréni, Jamil +2 more
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Geometric calibration of large-scale SAR images using wind turbines as ground control points
International Journal of Digital EarthThe geometric positioning accuracy of synthetic aperture radar images is a key factor impacting their application, necessitating geometric calibration for improved accuracy.
Mengrong Xi +7 more
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COMPARISON OF METHODS FOR GEOMETRIC CAMERA CALIBRATION [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012 Methods for geometric calibration of cameras in close-range photogrammetry are established and well investigated. The most common one is based on test-fields with well-known pattern, which are observed from different directions.
J. Hieronymus
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Perturbative Refinement of the Geometric Calibration in Pinhole SPECT
IEEE Transactions on Medical Imaging, 2008 The paper investigates the geometric calibration of a rotating gamma camera for pinhole (PH) single photon emission computed tomography (SPECT) imaging. Most calibration methods previously applied in PH-SPECT assume that the motion of the camera around the object belongs to a well-defined class described by a small number of geometric parameters, for ...
Michel Defrise +2 more
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A Geometric Proof of Calibration [PDF]
Mathematics of Operations Research, 2010 We provide yet another proof of the existence of calibrated forecasters; it has two merits. First, it is valid for an arbitrary finite number of outcomes. Second, it is short and simple and it follows from a direct application of Blackwell's approachability theorem to a carefully chosen vector-valued payoff function and convex target set.
Stoltz, Gilles, Mannor, Shie
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Quantification of geometric uncertainties in image guided radiotherapy [PDF]
, 2010 The aim of this thesis is to determine if the geometric uncertainties that are introduced into the image guided radiotherapy (IGRT) process by Cone Beam CT (CBCT) based IGRT equipment are sufficiently small that they do not pose a significant risk of ...
Sykes, Jonathan
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Наука и техника, 2020 In the operation schemes of optical electronic devices (OED), such as digital autocollimators, direction finders, Shack-Hartmann sensors, as well as astro-orientation systems, projection measuring systems, geometric calibration schemes for OED, the photo-
M. A. Starasotnikau +2 more
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Geometric Calibration of the ESA Mars Express Orbiter High Resolution Stereo Camera
Earth and Space Science, 2023 The high‐resolution stereo camera mounted on the Mars Express (MEX) spacecraft of the European Space Agency is specifically designed for planetary photogrammetry and mapping missions.
D. Li +5 more
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Hierarchical Task Based Process Planning For Machine Tool Calibration [PDF]
, 2011 A literature search has indicated that artificially intelligent planners have not previously been used to address the planning problem of machine tool calibration, even though there are potential advantages.
Longstaff, Andrew P. +5 more
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Remote Sensing, 2021 When in orbit, spliced satellite optical cameras are affected by various factors that degrade the actual image stitching precision and the accuracy of their data products. This is a major bottleneck in the current remote sensing technology.
Tao Wang +6 more
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