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Comment by neilxm | Hacker News Reader

Reading your question again, I should clarify - it's not quite compositing a random background under the 2d image. it's using stable diffusion to "in-paint" a background that makes sense spatially, with correct shadows, lighting and perspective to match your prompt. That being said, there's still a lot to be done to deeply integrate the 3D and 2D spaces and that's just going to be part of the ongoing exploration in this project.

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That's fair. I guess in my head they're still one in the same. This is compositing without the step of having to match shadows and find a background with a decent angle, etc. I had asked in my original post if this was to skip the step of compositing (because you would do things like fix shadows etc if you were compositing) and that's what it sounds like it is, which is cool.

Do you communicate anything about the angle or anything to SD? (outside of just giving it the image with a transparent background)

I guess, given the additional context (and vs discussing the semantics of compositing), the better question is, how does this extend the capabilities of stable diffusion inpainting?

Is it any different than just putting your 3d model into photoshop or in a 3d viewer, exporting with a transparent background, and inpainting around it?

It's not that different right now you're right about that. It chains that sequence of steps together and I'm not really sending any meta data about the objects pose to SD, I just leave it up to the model. But the next step here is leveraging more control-net approaches and thats when it starts to really take advantage of 3D more than just the 2D snapshot minus background.

For example, a 3D editor to allow for simple low poly style scene creation, that then serves as conditioning input to control net. For example staging a model of a chair in a sketchup model of a living room with super basic furniture elements in low poly 3D models. You pass that into SD and out comes a fully rendered image. At that point i think you could argue that stable diffusion could be used as a platform agnostic renderer like VRAY but for any 3D modelling tool.

This was my version 1 haha

That sounds really damned cool! Kind of like image bashing without having to figure out how to use blender/photoshop or something to arrange it haha

bingo

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