So I have NDVI raster files for about 1000 acres of vineyards we manage. What I have done is created a model that takes the NDVi raster, reclassifies it to isolate out the areas of high vigor, then runs an Iso Unsupervised Classification, then generates a polygon (shown below). What I need to do is filter out the "noise" (aka the weeds and grass with very high NDVI values that my model couldn't filter out).
The 3 rows on the left are polygons showing our producing vines, gaps in between represent dead / missing bines. The issue is the giant green globs in-between each row; which is essentially tall, healthy grasses etc due to someone not mowing before the drone captured this imagery.
Other then manually going in and selecting the grass polygons in ArcMaps and deleting them, is there a tool I can use to automate this process? They unfortunately do not have a distinguishing attribute allowing me to select them.