Comment by oofbey
Cool - thanks for explaining that. I totally see how each has its place.
I imagine it's pretty complex to take the raw scan data and generate 3dgs. Are these algorithms simple & standard, or do they take a fair amount of tuning & tweaking to do a good job? Adapting these to work well with hard-edge ovals seems like it would take some work, and a lot more work to get them to output a mix of ovals & fuzzy blobs. But if you could do that, I agree the combination would be amazingly expressive.
There are a lot of tools to do this easily today, for free! Take a look at Postshot, or Brush. You can literally take a video with your mobile phone, toss it in Postshot, and a few minutes later you have a photorealistic 3DGS model you can use in Spark!
3DGS is still a rapidly evolving research field, but the "baseline" is pretty much standard these days.