Thanks for that example, Ulco. I was thinking that this might work better with large-scale objects instead of small ones. (And having an actual model helps, too.
) It should be fairly easy to make accurate object masks with an overhead orthographic camera, and to do them in large groups. Gives me some ideas.
I've spent the past week recovering from minor surgery and have been away from the desktop workstation. So I've been using the laptop to mess around with small scenes, combing through the forum and downloading files, looking up answers to some of the questions I still have. There's a wealth of information here. It's been time well spent.