Results 31 to 40 of about 12,499 (195)

Field Reflectance Measurements at Night of Beach and Desert Sands within a Particulate BRDF Model

Remote Sensing, 2022
The Bidirectional Reflectance Distribution Function (BRDF) of soils is frequently assumed to be Lambertian in remote sensing applications, even though many soils are observed to have a distinct backscatter.
John E. Wise, John C. Mars
doaj   +1 more source

Development of a High Resolution BRDF/Albedo Product by Fusing Airborne CASI Reflectance with MODIS Daily Reflectance in the Oasis Area of the Heihe River Basin, China

Remote Sensing, 2015
A land-cover-based linear BRDF (bi-directional reflectance distribution function) unmixing (LLBU) algorithm based on the kernel-driven model is proposed to combine the compact airborne spectrographic imager (CASI) reflectance with the moderate resolution
Dongqin You, Jianguang Wen, Qing Xiao, Qiang Liu, Qinhuo Liu, Yong Tang, Baocheng Dou, Jingjing Peng   +7 more
doaj   +1 more source

A Similarity Measure for Material Appearance [PDF]

, 2019
We present a model to measure the similarity in appearance between different materials, which correlates with human similarity judgments. We first create a database of 9,000 rendered images depicting objects with varying materials, shape and illumination.
Garces, Elena, Gutierrez, Diego, Lagunas, Manuel, Malpica, Sandra, Masia, Belen, Serrano, Ana   +5 more
core   +5 more sources

Directional Applicability Analysis of Albedo Retrieval Using Prior BRDF Knowledge

Remote Sensing
Surface albedo measures the proportion of incoming solar radiation reflected by the Earth’s surface. Accurate albedo retrieval from remote sensing data usually requires sufficient multi-angular observations to account for the surface reflectance ...
Hu Zhang, Qianrui Xi, Junqin Xie, Xiaoning Zhang, Lei Chen, Yi Lian, Hongtao Cao, Yan Liu, Lei Cui, Yadong Dong   +9 more
doaj   +1 more source

Radiometric Cross Calibration and Validation Using 4 Angle BRDF Model between Landsat 8 and Sentinel 2A

Remote Sensing, 2020
This work describes a proposed radiometric cross calibration between the Landsat 8 Operational Land Imager (OLI) and Sentinel 2A Multispectral Instrument (MSI) sensors.
M M Farhad, Morakot Kaewmanee, Larry Leigh, Dennis Helder   +3 more
doaj   +1 more source

Optical scatter of quantum noise filter cavity optics

, 2015
Optical cavities to filter squeezed light for quantum noise reduction require optics with very low scattering losses. We report on measured light scattering from two super-polished fused silica optics before and after applying highly-reflective ion-beam ...
Amra, Claude, Lequime, Michel, Magaña-Sandoval, Fabian, Smith, Joshua R., Vander-Hyde, Daniel, Zerrad, Myriam   +5 more
core   +3 more sources

A Copula‐Based BRDF Model

Computer Graphics Forum, 2010
Abstract In this paper, we introduce a novel approach for modeling surface reflection. We focus on using a family of probability distributions called Archimedean copulas as BRDF models. The Archimedean representation has an attractive property in that the multivariate distributions are characterized by their marginal distributions through a single ...
Ozturk, Aydin, Kurt, Murat, Bilgili, Ahmet   +2 more
openaire   +4 more sources

BRDF Correction in Landsat Directional Reflectance Data by Combining Optimal BRDF Archetype With Spectral Characteristics

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The Landsat optical images have provided a unique long-term record of the terrestrial surface and have always been an important data source for earth observation.
Aojie Shen, Jie Shao, Xin Qi, Zhongzheng Zhu, Yujie Dai, Qi Zeng   +5 more
doaj   +1 more source

A method for monitoring solar diffuser’s bidirectional reflectance distribution function degradation in geostationary orbit

European Journal of Remote Sensing, 2020
The advanced geosynchronous radiation imager (AGRI) is a geostationary sensor whose reflective solar band is calibrated by a solar diffuser (SD). The SD bidirectional reflectance distribution function (BRDF) degrades over time in the space environment ...
Wei Wang, Li-Ming Zhang, Weiwei Xu, Xiao-Long Si, Wen-Xin Huang   +4 more
doaj   +1 more source

A Dual-Beam Method-of-Images 3D Searchlight BSSRDF

, 2013
We present a novel BSSRDF for rendering translucent materials. Angular effects lacking in previous BSSRDF models are incorporated by using a dual-beam formulation.
d'Eon, Eugene
core   +1 more source