Results 11 to 20 of about 1,018,273 (298)

Estimation of chlorophyll content in pepper leaves using spectral transmittance red-edge parameters [PDF]

open access: goldInternational Journal of Agricultural and Biological Engineering, 2022
Shuai Huang   +5 more
openaire   +2 more sources

Adjustment of Sentinel-2 Multi-Spectral Instrument (MSI) Red-Edge Band Reflectance to Nadir BRDF Adjusted Reflectance (NBAR) and Quantification of Red-Edge Band BRDF Effects

open access: yesRemote Sensing, 2017
Optical wavelength satellite data have directional reflectance effects over non-Lambertian surfaces, described by the bidirectional reflectance distribution function (BRDF).
David P. Roy   +2 more
doaj   +3 more sources

Determination of optimal wavelet denoising parameters for red edge feature extraction from hyperspectral data [PDF]

open access: closedJournal of Applied Remote Sensing, 2009
A study of wavelet denoising on hyperspectral reflectance data, specifically the red edge position (REP) and its first derivative is presented in this paper. A synthetic data set was created using a sigmoid to simulate the red edge feature for this study. The sigmoid is injected with Gaussian white noise to simulate noisy reflectance data from handheld
Mohd R. M. Yusof
openaire   +2 more sources

Analysis of the Effectiveness of the Red-Edge Bands of GF-6 Imagery in Forest Health Discrimination

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The red-edge band is closely related to biochemical parameters that characterize the growth condition of green plants and is an important factor in monitoring vegetation health.
Jiahui Chen, Hanqiu Xu
doaj   +3 more sources

Evaluation of Sentinel-2 Red-Edge Bands for Empirical Estimation of Green LAI and Chlorophyll Content

open access: yesSensors, 2011
ESA’s upcoming satellite Sentinel-2 will provide Earth images of high spatial, spectral and temporal resolution and aims to ensure continuity for Landsat and SPOT observations.
José Moreno   +3 more
doaj   +3 more sources

Hyperspectral remote sensing of biochemical and biophysical parameters: the derivate red-edge "double-peak feature", a nuisance or an opportunity?

open access: green, 2007
Improved quantification and monitoring of biophysical and biochemical attributes is required to predict the response of ecosystems to climate change and acquire deeper understanding of the carbon cycle. Remote sensing is widely viewed as a time- and cost-efficient way to proceed with large-scale monitoring of vegetation parameters.
M.A. Cho
openaire   +4 more sources

Towards red-edge positions less sensitive to canopy biophysical parameters using prospect-sailh simulated data

open access: green, 2006
The position of the inflexion point in the red edge (680 nm to 780 nm), termed the red-edge position (REP) has been used as a measure to estimate foliar chlorophyll or nitrogen content. In this study, we assessed the utility of a new technique for extracting the REP, the linear extrapolation method recently proposed by Cho and Skidmore [Remote Sens ...
Cho, M.A.   +2 more
openaire   +3 more sources

Narrow band based and broadband derived vegetation indices using Sentinel-2 Imagery to estimate vegetation biomass [PDF]

open access: yesGlobal Journal of Environmental Science and Management, 2020
Forest’s ecosystem is one of the most important carbon sink of the terrestrial ecosystem. Remote sensing technology provides robust techniques to estimate biomass and solve challenges in forest resource assessment.
A.B. Imran   +5 more
doaj   +1 more source

UAV Hyperspectral Data Combined with Machine Learning for Winter Wheat Canopy SPAD Values Estimation

open access: yesRemote Sensing, 2023
Chlorophyll is an important indicator for monitoring crop growth and is vital for agricultural management. Therefore, rapid and accurate estimation of chlorophyll content is important for decision support in precision agriculture to accurately monitor ...
Qi Wang   +5 more
doaj   +1 more source

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