Photography is a copyrightable art, but don't say that most of the work is actually done by a machine. Or even by the engineer who built the machine. You could argue that the photographer just presses a button and, perhaps, airbrushes it later in photoshop, and yet that's art.

A common technique in paint print shops is to print the piece on canvas, then “add” color to it in globs of acrylic that match, making it stand off from the canvas. A very quick a clever trick to recreate multiples of a piece.