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How to get single trunks as features out of a forest (aerial image)

Question asked by tt.209 on Apr 12, 2016
Latest reply on Apr 14, 2016 by tt.209

Hey there,


I hope some of you can help me with my problem.

There is an aerial image of a forest where you can see the result of a so-called downburst. In a certain area trees got knocked down by the wind.





My task is to create a program with the model builder, which uses this aerial image to give out

1. in which cardinal direction the trees on the ground are pointing


2. what the diameter of each trunk is.

My biggest problem is that I don't know, how to filter out the single trunks out of a all over brown forest in the wintertime and how to get them as features whereby I can calculate the further goals with.

I'm using ArcGis 10.3.


I would be so greatful if someone would have an idea, a tip or a solution for me.