Results 21 to 30 of about 316,881 (368)

Self-Calibrating Deep Photometric Stereo Networks [PDF]

open access: yesComputer 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

Photometric Redshifts of Galaxies in COSMOS [PDF]

open access: yes, 2006
We measure photometric redshifts and spectral types for galaxies in the COSMOS survey. We use template fitting technique combined with luminosity function priors and with the option to simultaneously estimate dust extinction (i.e. E(B-V)) for each galaxy.
A. Iovino   +37 more
core   +3 more sources

Multiview Photometric Stereo [PDF]

open access: yesIEEE 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
openaire   +3 more sources

Hierarchical Bayesian inference of galaxy redshift distributions from photometric surveys [PDF]

open access: yes, 2016
Accurately characterizing the redshift distributions of galaxies is essential for analysing deep photometric surveys and testing cosmological models.
Leistedt, Boris   +2 more
core   +2 more sources

EAZY: A Fast, Public Photometric Redshift Code [PDF]

open access: yes, 2008
We describe a new program for determining photometric redshifts, dubbed EAZY. The program is optimized for cases where spectroscopic redshifts are not available, or are only available for a biased subset of the galaxies.
G. Brammer, P. V. van Dokkum, P. Coppi
semanticscholar   +1 more source

SuperNova Acceleration Probe (SNAP): Investigating Photometric Redshift Optimization [PDF]

open access: yes, 2007
The aim of this paper is to investigate ways to optimize the accuracy of photometric redshifts for a SNAP like mission. We focus on how the accuracy of the photometric redshifts depends on the magnitude limit and signal-to-noise ratio, wave-length ...
Arnouts, Stephane   +7 more
core   +3 more sources

Photometric Determination of Phospholipase A [PDF]

open access: yesClinical 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
openaire   +4 more sources

Comparative Study of Light Sources for Household

open access: yesManagement Systems in Production Engineering, 2017
The article describes test results that provided the ground to define and evaluate basic photometric, colorimetric and electric parameters of selected, widely available light sources, which are equivalent to a traditional incandescent 60-Watt light bulb.
Pawlak Andrzej, Zalesińska Małgorzata
doaj   +1 more source

Variations of the Ratio of Total-To-selective Extinction in the Galaxy

open access: yesOpen Astronomy, 2003
The results of the study of variations of total-to-selective extinction RV near the Galactic plane (-12° ≤ b ≤+12°) are presented. It is shown that variations of RV range from 1.9 to 3.4 and it is not possible to determine its typical value for the ...
Sūdžius J., Raudeliūnas S.
doaj   +1 more source

Photometric Sensing of Active Chlorine, Total Chlorine, and pH on a Microfluidic Chip for Online Swimming Pool Monitoring

open access: yesSensors, 2020
A microfluidic sensor was studied for the photometric detection of active chlorine, total chlorine, and pH in swimming pool samples. The sensor consisted of a four-layer borosilicate glass chip, containing a microchannel network and a 2.2 mm path length,
Sait Elmas   +6 more
doaj   +1 more source

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