What is the "interface" of an image and what is the "implementation"? In the Oracle case, the terms were clear. The interface is the set of rules that bind the implementation and its consumers. In the case of an image, this is inapplicable. One could try to determine the size of the image, its colors, and other physical parameters. But in the end, I fail to develop a useful abstraction that could serve as "interface". So, no, the case cannot be used as an argument, IMO.
Maybe music is a better analogy. If a band does a cover of a song, they may hold copyright to the recording (implementation) but not the composition (specification).
