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Comment by minimaxir

18 hours ago

You can output to a plain background and use any number of tools to mask it.

I know. It sounds like a perfect task for AI to do it though (wasn't the whole premise of AI do to mundane things for us), yet they fail to do it, and I need to use an external tool.

  • Alpha is a 4th image channel that 99%+ of images in the training data do not use, so it makes more pragmatic sense to just not allow it.

The output from Nano Banana, even when it is ostensibly drawing "single color" shaded areas, is so jittery that it can be challenging to threshold it.

  • Nano Banana Pro is better at that type of thing, so I suspect Nano Banana 2 will be sufficient.