Hi all,

I have an image with hundreds of about ground round swimming pools and trampolines. I read about this algorithm in a few papers and would like to learn about it and apply it to my imagery. So far it has added two plus shapes (+) in clumps of trees, no pool selection. I have the input layer set to NDSI (I have tried others and they seem to crash my memory) because it has excellent contrast (gray scale) with pools and the threshold set to 5 or less. The imagery has a resolution of .5 feet. A larger threshold results in nothing and smaller is a line of continuous plus shapes with no clear reason.

I can find the pools with geometry, nDSM and RGB-NIR mostly, I am trying to grow my rule set skills and apply this process tree to multiple areas within a metropolitan city. Thank you, looking forward to understanding more.