nostr:npub17ncsrs9w3s477cwu4ekuhw0h6nkely9lgmeakklsjjza5tq6dukshc9dam No worries. I tried small things a few years ago (pre-covid). A bit computer intensive and I struggled to get good crown delineations. It might be different now.

Cool thing is that there is free, publicly available LIDAR for the whole of Christchurch, I think.