I was wondering how I could extract "crown area" of single trees in a forest from a high-resolution image with only 3 band (RGB) in ArcMap. ( No NIR to use NDVI as any threshold).
I need a fast easy-to-do way to come up with a shapefile with polygons (made of several pixels depending on size of each individual tree). Here was I was thinking : Focal Statistic - Conditional (Raster calculator)- Extracr Attributes- Convert to polygon
I just need trees (to calculate their diameter at the end) in the forest. No matter the species or whatever.
I am using eCognition but I want to try ArcMap/ ( It's ok if its not 100% accurate!!! )