Difference image analysis: The interplay between the photometric scale factor and systematic photometric errors [PDF]
, 2015 Context: Understanding the source of systematic errors in photometry is essential for their calibration. Aims: We investigate how photometry performed on difference images can be influenced by errors in the photometric scale factor. Methods: We explore the equations for difference image analysis (DIA) and we derive an expression describing how errors ...
Alsubai, K. A. +4 more
arxiv +3 more sources
The many flavours of photometric redshifts [PDF]
arXiv, 2018 For more that seventy years, the measurements of fluxes of galaxies at different wavelengths and derived colours have been used to estimate their corresponding cosmological distances. From the fields of galaxy and AGN evolution to precision cosmology, the number of scientific projects relying on such distance measurements, called photometric redshifts,
M. Salvato, O. Ilbert, B. Hoyle
arxiv +2 more sources
Accurate photometric redshifts for the CFHT Legacy Survey calibrated using the VIMOS VLT Deep Survey [PDF]
, 2006 We present photometric redshifts for an uniquely large and deep sample of 522286 objects with i'_{AB}
A. Bongiorno +97 more
core +6 more sources
A PHOTOMETRIC ADAPTATION OF THE SOMOGYI METHOD FOR THE DETERMINATION OF GLUCOSE
, 1944 Norton Nelson
openalex +2 more sources
Leveraging Photometric Consistency Over Time for Sparsely Supervised Hand-Object Reconstruction [PDF]
Computer Vision and Pattern Recognition, 2020 Modeling hand-object manipulations is essential for understanding how humans interact with their environment. While of practical importance, estimating the pose of hands and objects during interactions is challenging due to the large mutual occlusions ...
Yana Hasson +5 more
semanticscholar +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
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
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
Self-Calibrating Deep Photometric Stereo Networks [PDF]
Computer Vision and Pattern Recognition, 2019 This paper proposes an uncalibrated photometric stereo method for non-Lambertian scenes based on deep learning. Unlike previous approaches that heavily rely on assumptions of specific reflectances and light source distributions, our method is able to ...
Guanying Chen +4 more
semanticscholar +1 more source
Type Ia supernova Hubble diagrams with host galaxy photometric redshifts [PDF]
JCAP 10(2022) 065, 2022 The case of SN Ia Hubble diagrams from photometrically selected samples using photometric SN host galaxy redshifts is investigated. The host redshift uncertainties and the contamination by core collapse SNe are addressed. As a test, we use the 3-year photometric SN Ia sample of the SuperNova Legacy Survey (SNLS), made of 437 objects between 0.1 and 1 ...
arxiv +1 more source