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1 results about "Normalized Difference Vegetation Index" patented technology
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The normalized difference vegetation index (NDVI) is a simple graphical indicator that can be used to analyze remote sensing measurements, typically, but not necessarily, from a space platform, and assess whether the target being observed contains live green vegetation or not.
Leaf area index determination method, apparatus, device, medium, and product
The present application provides a kind of leaf area index determination method, device, equipment, medium and product, it is related to agricultural remote sensing and near-ground optical measurement technical field, to solve the defects of lower accuracy and poor efficiency in determining the leaf area index of crop in the prior art, realize the accuracy and efficiency of improving the leaf area index of crop is determined.Imcluding: the target hemispherical image collected is carried out image correction processing, obtain the target hemispherical image after correction, target hemispherical image is obtained by vertical upward shooting for shooting device in plant row center position;Determine the normalized difference vegetation index NDVI histogram corresponding to plant in the target hemispherical image after correction;Based on NDVI histogram and preset zenith angle weight, determine the void fraction of plant;Based on void fraction, the leaf area index LAI of plant is inversed.
Owner:CHINA AGRI UNIV