Results 11 to 20 of about 316,881 (368)
An Attempt to Construct an Activity Cycle Catalog with Kepler Long-Cadence Light Curves
Universe, 2022 Many stars show activity cycles like the Sun. Kepler has gathered ∼200,000 light curves. Most of the Kepler stars only have long-cadence light curves, which limits their applicable methods.
Yu-Fu Shen, Gang Zhao, Sarah A. Bird
doaj +1 more source
The Clustering of DESI-like Luminous Red Galaxies Using Photometric Redshifts [PDF]
Monthly notices of the Royal Astronomical Society, 2020 We present measurements of the redshift-dependent clustering of a DESI-like luminous red galaxy (LRG) sample selected from the Legacy Survey imaging dataset, and use the halo occupation distribution (HOD) framework to fit the clustering signal.
R. Zhou +13 more
semanticscholar +1 more source
The New Ephemeris and Light Curve Analysis of V870 Ara by the Ground-Based and TESS Data
Open Astronomy, 2021 New CCD photometric observations and their investigation of the W UMa-type binary, V870 Ara, are presented. Light curves of the system were taken through BVIfilters from the Congarinni Observatory in Australia.
Poro Atila +6 more
doaj +1 more source
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
openaire +2 more sources
Deep Photometric Stereo for Non-Lambertian Surfaces [PDF]
IEEE Transactions on Pattern Analysis and Machine Intelligence, 2020 This paper addresses the problem of photometric stereo, in both calibrated and uncalibrated scenarios, for non-Lambertian surfaces based on deep learning.
Guanying Chen +4 more
semanticscholar +1 more source
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
openaire +4 more sources
Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties [PDF]
, 2016 At about 1000 days after the launch of Gaia we present the first Gaia data release, Gaia DR1, consisting of astrometry and photometry for over 1 billion sources brighter than magnitude 20.7.
G. C. Brown +11 more
semanticscholar +1 more source
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
openaire +3 more sources
Photometric redshifts from reconstructed QSO templates [PDF]
, 2001 From SDSS commissioning photometric and spectroscopic data, we investigate the utility of photometric redshift techniques to the task of estimating QSO redshifts. We consider empirical methods (e.g.
Alexander S. Szalay +21 more
core +2 more sources
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
openaire +5 more sources