[Benjamin_Dobell]

I'm far from an expert in this area. I've also tried Bria RMBG 1.4, Bria RMBG 2.0, older BiRefNet versions, and I think another I forgot the name of. The fact I'm removing backgrounds that are predominantly white (a sheet of paper) in first place probably changes things significantly. So it's hard to extrapolate my results to general background removal.

BiRefNet 2 seems to do a much better job of correctly removing backgrounds in between the contents outline. So like hands on hips, that region that's fully enclosed but you want removed. It's not just that though, some other models will remove this, but they'll be overly aggressive and remove white areas where kids haven't coloured in perfectly — or like the intentionally left blank whites of eyes for example.

I'm putting these images in a game world once they're cut out, so if things are too transparent, they look very odd.