I want to calculate EVI index from UAV multispectral survey. For satellite imagery it is pretty straightforward (after reading multiple posts on GIS.SE) but not sure how to approach this problem, when imagery is collected from approx. 120 meters and atmospheric correction is not required in such extent.
Can somebody give me a tip how to build the equation in QGIS raster calculator to get proper EVI values?
What vaules should I assign for the "G", "C1", "C2" and "L" coefficients?
EVI = G X ((NIR - RED)/ (NIR + (C1 x RED)-(C2 x BLUE) + L))