Results 131 to 140 of about 52,709 (270)
Full 3D BSDF spectroradiometer
, 2006 To expedite colour and gloss measurements, the CIE and ASTM have recommended some basic geometries regarding illumination and viewing angles. There are, however, many surfaces that cannot be adequately measured using such limited conditions. Any gloss and colour measurement can be related to some particular value of the general spectral Bidirectional ...
Leloup, Frédéric +4 more
openaire +1 more source
Scaling Lightness and Chroma for Highlight Stimuli in HDR Scenes
Color Research &Application, Volume 51, Issue 3, May/June 2026.Chroma of a stimulus, whose (u′, v′) chromaticities are (0.2011, 0.4684) and have around 1 JNCD (Δu′v′ = 0.0033) to the D65 chromaticities, with the luminance from 0 to 10 000 cd/m2, as calculated using the six models. ABSTRACT Lightness and chroma, which are the key elements in uniform color spaces (UCS) and color appearance models (CAM), play ...
Yuetong Shen, Jiamin Guo, Minchen Wei
wiley +1 more source
Terra Spacecraft -- NASA's Earth Observing System [PDF]
, 1999 This brochure gives a brief overview of the Earth science research that is being done with data from the instruments onboard NASA's Terra spacecraft. Note: this brochure was produced before the Terra launched; for the most recent information, go to http:/
core
Color Research &Application, Volume 51, Issue 3, May/June 2026.The graphical abstract displays 67 color samples from the Color‐aid Corporation “Full Set” (CAC‐314) plotted in the CIE ab chromaticity plane based on the measurements reported in the current article. Each data point represents one color sample, labeled with its Color‐aid code, and positioned according to its measured CIE a* (red‐green axis) and b ...
Domicele Jonauskaite, Delwin T. Lindsey
wiley +1 more source
Ultraviolet corona detection sensor study [PDF]
The feasibility of detecting electrical corona discharge phenomena in a space simulation chamber via emission of ultraviolet light was evaluated. A corona simulator, with a hemispherically capped point to plane electrode geometry, was used to generate ...
MATHERN, Schmitt, R. J.
core +1 more source
Differences in Phenological Estimation From Multi‐Vegetation Indices Across the Yellow River Basin
Ecology and Evolution, Volume 16, Issue 5, May 2026.This study evaluated the differential performance of PPI, kNDVI, and EVI in monitoring land surface phenology across the Yellow River Basin. The three vegetation indices showed pronounced divergence in capturing autumn phenological metrics, particularly the downturn date (DD) and recession date (RD).
Qinyue Yu, Yan Bai, Juanle Wang
wiley +1 more source
In-flight radiometric calibration of the Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) [PDF]
A reflectance-based method was used to provide an analysis of the in-flight radiometric performance of AVIRIS. Field spectral reflectance measurements of the surface and extinction measurements of the atmosphere using solar radiation were used as input ...
Alley, Ronald E. +9 more
core +1 more source
Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 5, May 2026.Abstract Water status, water dynamics, and ecohydrological resilience of a protected German beech forest during the 2018–2020 multi‐year drought are assessed using over six years of multi‐frequency remote sensing data, integrating active, passive, and optical sensors with varying canopy penetration depths, highlighting the importance of monitoring ...
Florian M. Hellwig +10 more
wiley +1 more source
Multi‐Sensor Spatiotemporal Fusion for 30‐m Daily Gapless Snow Cover Mapping
Water Resources Research, Volume 62, Issue 5, May 2026.Abstract High spatiotemporal resolution remote sensing data is crucial for monitoring heterogeneous mountainous snow cover. Although spatiotemporal fusion presents a promising approach for high‐resolution snow monitoring, cloud contamination and sparse observations remain a critical constraint on its large‐scale and long‐term implementation. To address
Jinhang Wu +5 more
wiley +1 more source
NASA GIBS and Worldview: Visualizing NASA's Earth Science Data for All to Explore [PDF]
For more than 20 years, the NASA Earth Observing System (EOS) has operated dozens of remote sensing satellites collecting nearly 15 Petabytes of data that span thousands of science parameters.
Baynes, Katie +9 more
core +1 more source