There may still be imperceptible features that experts may have a hard time finding that a deep learning model could find, so I wouldn’t give up on an image-only method just yet…
But in case you want to supplement with additional data, I would look into multimodal models where you can combine image with other types of data, such as tabular or text data. It’s a bit of a more advanced topic though. Maybe the discussion here will help:
https://forums.fast.ai/t/combining-tabular-images-in-fastai2-and-should-work-with-almost-any-other-type/
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