Results 11 to 20 of about 49,683 (297)
THE ALHAMBRA PHOTOMETRIC SYSTEM [PDF]
The Astronomical Journal, 2010 Astronomical Journal on the 14th of January ...
Francisco J. Castander +24 more
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Photometric Segmentation: Simultaneous Photometric Stereo and Masking [PDF]
2019 International Conference on 3D Vision (3DV), 2019 This work is concerned with both the 3D-reconstruction of an object using photometric stereo, and its 2D-segmentation from the background. In contrast with previous works on photometric stereo which assume that a mask of the area of interest has been computed beforehand, we formulate 3D-reconstruction and 2D-segmentation as a joint problem.
Haefner, Bjoern +2 more
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The GALANTE photometric system [PDF]
Monthly Notices of the Royal Astronomical Society, 2019 This paper describes the characterization of the GALANTE photometric system, a seven intermediate- and narrow-band filter system with a wavelength coverage from 3000 $ $ to 9000 $ $ . We describe the photometric system presenting the full sensitivity curve as a product of the filter sensitivity, CCD, telescope mirror, and atmospheric transmission ...
Pedro García-Lario +12 more
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Photometric Visual Servoing [PDF]
IEEE Transactions on Robotics, 2011 This paper proposes a new way to achieve robotic tasks by 2D visual servoing. Indeed, instead of using classical geometric features such as points, straight lines, pose or a homography, as is usually done, the luminance of all pixels in the image is here considered.
Collewet, Christophe, Marchand, Eric
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Photometric stereo endoscopy [PDF]
Journal of Biomedical Optics, 2013 While color video endoscopy has enabled wide-field examination of the gastrointestinal tract, it often misses or incorrectly classifies lesions. Many of these missed lesions exhibit characteristic three-dimensional surface topographies. An endoscopic system that adds topographical measurements to conventional color imagery could therefore increase ...
Parot Fernández, Vicente José +6 more
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Multiview Photometric Stereo [PDF]
IEEE Transactions on Pattern Analysis and Machine Intelligence, 2008 This paper addresses the problem of obtaining complete, detailed reconstructions of textureless shiny objects. We present an algorithm which uses silhouettes of the object, as well as images obtained under changing illumination conditions. In contrast with previous photometric stereo techniques, ours is not limited to a single viewpoint but produces ...
Roberto Cipolla +2 more
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Photometric Determination of Phospholipase A [PDF]
Clinical Chemistry and Laboratory Medicine, 1986 A photometric method for the determination of phospholipase A is described, in which fatty acids are liberated from phosphatidylcholine and measured by a discontinuous enzymatic test. Optimal test conditions were evaluated using purified phospholipase A from human and porcine pancreas.
Hoffmann, G. +3 more
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Photometric calibration methods for wide-field photometric surveys
SCIENTIA SINICA Physica, Mechanica & Astronomica, 2022 Uniform and accurate photometric calibration plays an important role in the current and next-generation wide-field imaging surveys. Herein, we review the modern photometric calibration methods, including the classic standard star method, "hardware/observation-driven" methods (such as the Ubercalibration, Hypercalibration, and Forward Global Calibration
Huang, Bowen, Xiao, Kai, Yuan, Haibo
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