Results 11 to 20 of about 72,385 (264)

ESTIMATION OF LAND SURFACE ALBEDO FROM GCOM-C/SGLI SURFACE REFLECTANCE [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2021
This paper examines algorithms for estimating terrestrial albedo from the products of the Global Change Observation Mission – Climate (GCOM-C) / Second-generation Global Imager (SGLI), which was launched in December 2017 by the Japan Aerospace ...
J. Susaki   +4 more
doaj   +1 more source

Deriving Surface Reflectance From Visible/Near Infrared and Ultraviolet Satellite Observations Through the Community Radiative Transfer Model

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
Earth's surface reflectance is an important parameter affecting ultraviolet (UV) and visible (VIS) radiance calculations at the top of the atmosphere because many UV and VIS channels can acquire information about the surface and atmosphere.
Quanhua Liu   +7 more
doaj   +1 more source

Retrieval of the Leaf Area Index from Visible Infrared Imaging Radiometer Suite (VIIRS) Surface Reflectance Based on Unsupervised Domain Adaptation

open access: yesRemote Sensing, 2022
Several global leaf area index (LAI) products were generated using neural networks, but the training dataset for the neural networks was sensor specific, and the construction of the training dataset was time consuming.
Juan Li   +3 more
doaj   +1 more source

Implementing a Dual-Spectrometer Approach for Improved Surface Reflectance Estimation

open access: yesRemote Sensing, 2023
Surface reflectance measurement is an integral part of the vicarious calibration of satellite sensors and the validation of satellite-derived top-of-atmosphere (TOA) and surface reflectance products.
Mahesh Shrestha   +6 more
doaj   +1 more source

A Bayesian Reflection on Surfaces [PDF]

open access: yesEntropy, 1999
The topic of this paper is a novel Bayesian continuous-basis field representation and inference framework. Within this paper several problems are solved: The maximally informative inference of continuous-basis fields, that is where the basis for the field is itself a continuous object and not representable in a finite manner; the tradeoff between ...
openaire   +3 more sources

Lightdrum—Portable Light Stage for Accurate BTF Measurement on Site

open access: yesSensors, 2017
We propose a miniaturised light stage for measuring the bidirectional reflectance distribution function (BRDF) and the bidirectional texture function (BTF) of surfaces on site in real world application scenarios. The main principle of our lightweight BTF
Vlastimil Havran   +4 more
doaj   +1 more source

A Hyperspectral Bidirectional Reflectance Model for Land Surface

open access: yesSensors, 2020
A hyperspectral bidirectional reflectance (HSBR) model for land surface has been developed in this work. The HSBR model includes a very diverse land surface bidirectional reflectance distribution function (BRDF) database with ~40,000 spectra.
Qiguang Yang, Xu Liu, Wan Wu
doaj   +1 more source

Evaluation of the AVHRR surface reflectance long term data record between 1984 and 2011

open access: yesInternational Journal of Applied Earth Observations and Geoinformation, 2021
The long-term data record (LTDR) from the Advanced Very High-Resolution Radiometer (AVHRR) provides daily surface reflectance with global coverage from the 1980s to present day, making it a unique source of information for the study of land surface ...
Andres Santamaria-Artigas   +4 more
doaj   +1 more source

Aerosol optical depth (AOD) retrieval for atmospheric correction in Landsat-8 imagery using second simulation of a satellite signal in the solar spectrum-vector (6SV)

open access: yesCommunications in Science and Technology, 2019
Atmospheric correction has been challenging task in digital image processing. It requires several atmospheric parameters in order to obtain accurate surface reflectance of objects within the image scene.
Abdul Basith   +3 more
doaj   +1 more source

Reflection in a Translation Invariant Surface [PDF]

open access: yesMathematical Physics, Analysis and Geometry, 2007
We prove that the focal set generated by the reflection of a point source off a translation invariant surface consists of two sets: a curve and a surface. The focal curve lies in the plane orthogonal to the symmetry direction containing the source, while the focal surface is translation invariant.
Guilfoyle, Brendan, Klingenberg, Wilhelm
openaire   +3 more sources

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