Nothing done by an algorithm is copyrightable either, as far as I know. It comes into the non-human "monkey selfie" category. The only copyrightable output would be taken directly from human-created copyrightable input, i.e., the original books.
Is this true? What are the extents of this? There are many movies that have tons of imagery created by algorithms that are surely covered by copyright. Is it enough for the algorithm itself to express creative expression? How about the inputs? Is any creative expression enough?
