Results 61 to 70 of about 3,522,681 (315)

Nonlinear unmixing of hyperspectral images: Models and algorithms [PDF]

open access: yes, 2013
When considering the problem of unmixing hyperspectral images, most of the literature in the geoscience and image processing areas relies on the widely used linear mixing model (LMM).
McLaughlin, Stephen; id_orcid   +14 more
core   +1 more source

Constrained reflect-then-combine methods for unmixing hyperspectral data [PDF]

open access: yes2013 5th Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing (WHISPERS), 2013
This paper deals with the linear unmixing problem in hyperspectral data processing, and in particular the estimation of the fractional abundances under sum-to-one and non-negativity constraints. For this purpose, we propose to adapt the reflect-then-combine iterative technique, initially derived by Cimmino.
Honeine, Paul, Lantéri, Henri
openaire   +4 more sources

Use of hyperspectral reflectance to non-destructively estimate seagrass Zostera noltei biomass

open access: yes, 2021
Seagrasses are marine plants ranked worldwide amongst the most valuable coastal ecosystems. The global conservation effort requires accurate estimation of seagrass abundance and taxonomic composition.
Valentina Costa   +3 more
semanticscholar   +1 more source

Hyperspectral reflectance measurements from UAS under intermittent clouds: Correcting irradiance measurements for sensor tilt

open access: yesRemote Sensing of Environment, 2021
One great advantage of optical hyperspectral remote sensing from unmanned aerial systems (UAS) compared to satellite missions is the possibility to fly and collect data below clouds. The most typical scenario is flying below intermittent clouds and under
C. Köppl   +12 more
semanticscholar   +1 more source

Measuring and modelling parameters from hyperspectral sensors for site-specific crop protection [PDF]

open access: yes, 2010
This thesis sought to optimise systems for plant protection in precision agriculture through developing a field method for estimating crop status parameters from hyperspectral sensors, and an empirical model for estimating the required herbicide dose in ...
Larsolle, Anders
core   +1 more source

Retrieval of Hyperspectral Surface Reflectance Based on Machine Learning [PDF]

open access: yesRemote Sensing, 2018
Many methods based on radiative-transfer models and empirical approaches with prior knowledge have been developed for the retrieval of hyperspectral surface reflectance. In this paper, we propose a novel approach for atmospheric correction of hyperspectral images based on machine learning.
Zhu, Sijie, Lei, Bin, Wu, Yirong
openaire   +2 more sources

Retrieval of Leaf Area Index (LAI) and Soil Water Content (WC) Using Hyperspectral Remote Sensing under Controlled Glass House Conditions for Spring Barley and Sugar Beet [PDF]

open access: yes, 2010
Leaf area index (LAI) and water content (WC) in the root zone are two major hydro-meteorological parameters that exhibit a dominant control on water, energy and carbon fluxes, and are therefore important for any regional eco-hydrological or ...
Borzuchowski, Jaromir   +5 more
core   +1 more source

Influence of Fractional Differential on Correlation Coefficient between EC1:5 and Reflectance Spectra of Saline Soil

open access: yesJournal of Spectroscopy, 2017
Soil salinization is one of the most serious environmental issues in arid and semiarid area with severe social, economic, and ecological problems. At present, most inversion models are based on raw reflectance spectra or integer differential transform ...
Nan Xia   +6 more
doaj   +1 more source

A Fast Smoothing Algorithm for Post-Processing of Surface Reflectance Spectra Retrieved from Airborne Imaging Spectrometer Data

open access: yesSensors, 2013
Surface reflectance spectra retrieved from remotely sensed hyperspectral imaging data using radiative transfer models often contain residual atmospheric absorption and scattering effects.
Bo-Cai Gao, Ming Liu
doaj   +1 more source

Hyperspectral reflectance data, molecular and weights for trained model

open access: yes, 2023
Supplementary data for the paper: "Data driven discovery and quantification of hyperspectral leaf reflectance phenotypes across a maize diversity panel.""maize_2020_unl_reflectance_traits.csv " contains hyperspectral reflectance data and molecular traits
Marcin W. Grzybowski (13765454)   +9 more
core   +1 more source

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