DefinePK

Abstract

This work presents an application’s design based on Matlab for the relative biomass measurement through the NDVI (Normalized Differential Vegetation Index) using a drone or unmanned aircraft. This application allows farmers to view the crops’ topsoil state in real-time to determine corrective or improvement actions. The NDVI calculation response is evaluated through the percentage referenced in the number of pixels with specific image characteristics, which must be a value greater than or equal to 0.2 of NDVI. The results are compared with commercial software. As a result, it’s shown the pixel saturation correction stage through the reflectance correction system allows to obtain 10% of pixels lower than the NDVI threshold, at the same time improves the vegetation cover state visualization since by eliminating in this stage, several areas of the culture show overexposure (low color contrast) in the NDVI values.