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Effects of Pansharpening on Vegetation Indices [PDF]

open access: yesISPRS International Journal of Geo-Information, 2014
This study evaluated the effects of image pansharpening on Vegetation Indices (VIs), and found that pansharpening was able to downscale single-date and multi-temporal Landsat 8 VI data without introducing significant distortions in VI values.
Brian Johnson
doaj   +2 more sources

Evaluation and Normalization of Topographic Effects on Vegetation Indices [PDF]

open access: yesRemote Sensing, 2020
The normalization of topographic effects on vegetation indices (VIs) is a prerequisite for their proper use in mountainous areas. We assessed the topographic effects on the normalized difference vegetation index (NDVI), the enhanced vegetation index (EVI), the soil adjusted vegetation index (SAVI), and the near-infrared reflectance of terrestrial ...
Aleixandre Verger, Guoxiang Liu
exaly   +4 more sources

Comparison the accuracies of different spectral indices for estimation of vegetation cover fraction in sparse vegetated areas

open access: yesEgyptian Journal of Remote Sensing and Space Sciences, 2011
Quantitative estimation of canopy biophysical variables are very important in different studies such as meteorology, agriculture and ecology, so knowledge of the spatial and temporal distribution of these variables would be highly beneficial.
Susan Barati   +4 more
doaj   +3 more sources

Evaluation of Broadband and Narrowband Vegetation Indices for the Identification of Archaeological Crop Marks

open access: yesRemote Sensing, 2012
Several studies in the past have examined the spectral capability of multispectral and hyperspectral imagery for the identification of crop marks, while recent studies have applied different vegetation indices in order to support remote sensing ...
Diofantos G. Hadjimitsis   +2 more
doaj   +3 more sources

Assessing the Robustness of Vegetation Indices to Estimate Wheat N in Mediterranean Environments

open access: yesRemote Sensing, 2014
Remotely sensed vegetation indices have been extensively used to quantify plant and soil characteristics. The objectives of this study were to: (i) compare vegetation indices developed at different scales for measuring canopy N content (g∙N∙m−2) and ...
Davide Cammarano   +3 more
doaj   +3 more sources

State of Major Vegetation Indices in Precision Agriculture Studies Indexed in Web of Science: A Review

open access: yesAgriculture, 2023
Vegetation indices provide information for various precision-agriculture practices, by providing quantitative data about crop growth and health. To provide a concise and up-to-date review of vegetation indices in precision agriculture, this study focused
Dorijan Radočaj   +3 more
doaj   +1 more source

UAV-Derived Spectral Indices for the Evaluation of the Condition of Rye in Long-Term Field Experiments

open access: yesAgriculture, 2022
The aim of the study was to evaluate the effect of various fertilization treatments, including nitrogen, potassium and phosphorus fertilization, in long-term experiments for selected UAV (unmanned aerial vehicle)-derived spectral vegetation indices (NDVI—
Elżbieta Wójcik-Gront   +2 more
doaj   +1 more source

MONITORING THE VEGETATIVE STATE OF COFFEE USING VEGETATION INDICES

open access: yesEngenharia Agrícola
Vegetation indices are a quick and practical alternative for monitoring crops due to the availability of satellite images on various platforms for free, allowing a quick analysis of the vegetative state of the crop and interventions in the field in case ...
Vitor Chedid   +2 more
doaj   +3 more sources

VEGETATION INDICES FOR IRRIGATED CORN MONITORING [PDF]

open access: yesEngenharia Agrícola, 2020
Monitoring of large agricultural lands is often hampered by data collection logistics at field level. To solve such a problem, remote sensing techniques have been used to estimate vegetation indices, which can subsidize crop management decision-making ...
Francisco C. G. Alvino   +4 more
doaj   +1 more source

Estimating the Reduction in Cover Crop Vitality Followed by Pelargonic Acid Application Using Drone Imagery

open access: yesAgronomy, 2023
Cultivation of cover crops is a valuable practice in sustainable agriculture. In cover crop management, the method of desiccation is an important consideration, and one widely used method for this is the application of glyphosate.
Eliyeh Ganji   +2 more
doaj   +1 more source

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