Results 11 to 20 of about 12,499 (195)

Characterizing the Spatial Variations of Forest Sunlit and Shaded Components Using Discrete Aerial Lidar

open access: yesRemote Sensing, 2020
Forest three-dimensional (3-D) structure, in the vertical dimension, consists of at least two components, including overstory and a forest background matrix (i.e., shrubs, grass, and bare earth).
Xiaofei Wang   +5 more
doaj   +1 more source

The Classification of Reflectance Anisotropy and Its Application in Albedo Retrieval

open access: yesAtmosphere, 2022
The land surface albedo reflects the ability of the surface to reflect solar radiation and is a critical physical variable in the study of the Earth’s energy budget and global climate change.
Mengzhuo Zhao   +6 more
doaj   +1 more source

IMAGE-BASED BRDF MEASUREMENT [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022
One of the most challenging effects of remote sensing is landcover materials' Bidirectional Reflectance Distribution Function (BRDF). A wide range of approaches and measuring methods address the BRDF in various studies.
S. Weil-Zattelman, F. Kizel
doaj   +1 more source

Image-based BRDF Representation [PDF]

open access: yesJournal of Applied Mathematics, Statistics and Informatics, 2015
Abstract To acquire a certain level of photorealism in computer graphics, it is necessary to analyze, how the materials scatter the incident light. In this work, we propose the method to direct rendering of isotropic bidirectional reflectance function (BRDF) from the small set of images. The image-based rendering is focused to synthesize
Mihálik, A., Ďurikovič, R.
openaire   +2 more sources

Effect of surface BRDF of various land cover types on geostationary observations of tropospheric NO2 [PDF]

open access: yesAtmospheric Measurement Techniques, 2014
We investigated the effect of surface reflectance anisotropy, bidirectional reflectance distribution function (BRDF), on satellite retrievals of tropospheric NO2.
K. Noguchi   +6 more
doaj   +1 more source

Linking goniometer measurements to hyperspectral and multi-sensor imagery for retrieval of beach properties and coastal characterization [PDF]

open access: yes, 2012
In June 2011, a multi-sensor airborne remote sensing campaign was flown at the Virginia Coast Reserve Long Term Ecological Research site with coordinated ground and water calibration and validation (cal/val) measurements.
Abelev, Andrei   +21 more
core   +2 more sources

Estimating Forest Canopy Height Using MODIS BRDF Data Emphasizing Typical-Angle Reflectances

open access: yesRemote Sensing, 2019
Forest-canopy height is an important parameter for the estimation of forest biomass and terrestrial carbon flux and climate-change research at regional and global scales.
Lei Cui   +9 more
doaj   +1 more source

External quantum efficiency enhancement by photon recycling with backscatter evasion [PDF]

open access: yes, 2018
The nonunity quantum efficiency (QE) in photodiodes (PD) causes deterioration of signal quality in quantum optical experiments due to photocurrent loss as well as the introduction of vacuum fluctuations into the measurement. In this paper, we report that
Adhikari, Rana X   +3 more
core   +2 more sources

Evaluation of BRDF Archetypes for Representing Surface Reflectance Anisotropy Using MODIS BRDF Data

open access: yesRemote Sensing, 2015
Bidirectional reflectance distribution function (BRDF) archetypes extracted from the Moderate Resolution Imaging Spectroradiometer (MODIS) BRDF/Albedo product over the global Earth Observing System Land Validation Core Sites can be used to simplify BRDF
Hu Zhang   +3 more
doaj   +1 more source

An intuitive control space for material appearance [PDF]

open access: yes, 2018
Many different techniques for measuring material appearance have been proposed in the last few years. These have produced large public datasets, which have been used for accurate, data-driven appearance modeling.
Gutierrez, Diego   +4 more
core   +3 more sources

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