[versteegen]

That's a nice protocol.

I have to quibble though that the Turing test is meant to be a test of intelligence, and this sort of task seems pretty different, although it may actually be visual-AI-hard (to invent a new term). So may deserve a different name.

[lazaroclapp]

You can call it a test of human-level aesthetic sensibility if you'd think a highly intelligent alien species would be unlikely to share our aesthetics. Although, arguably, a highly intelligent alien would be able to understand our aesthetics to the point where they pass the test regardless...