Yes, Jessica, thank you very much, I am glad to see that you have similar interests (*_*) !
Thanks to the response in MSE, it was possible to obtain good result with PDE,
but it is not clear how this way to get thousands of pores for statistics, comparison with the photo.
The idea of a cellular automata looks much more realistic.
Very interesting that I came to it too.
Thank you for the example, I will study it,
and may be we able to get the real mushroom pore generation (o_O)
