Hi @sigtill

This is a interesting challenge :)

Yes, away from my computer untill Monday, so you get a head-start on this!

I believe on this way:

Read the image > find the center point > create a multiples buffers using the custom transformer MultiBufferer.

Workspace_Age_.fmwt

Looks like it could be a good match for the new machine learning capabilites in FME 2019:

https://blog.safe.com/2018/12/fme-natural-language-processing-evangelist182/

It's also possible to do a lot of very powerful stuff integrating FME with e.g. AWS Machine Learning services:

https://aws.amazon.com/machine-learning/?nc1=h_ls

I really want AI!

https://knowledge.safe.com/content/idea/47034/fme-with-ai-artificial-intelligence.html

I read that it is called dendrochronology and is widely researched.

There are dedicated programs to do it, some more interactive then others.

Also many papers can be read or even downloaded.

So the challenge would be to inmplement some algorithm that does it.

Estimating center of tree and buffering is..well, if it were that easy then even I could do it! ;)