While this seems like a convincing case, at what point is it morally acceptable to produce new art derived from existing work?
Would it have been fine if Capcom had re-created near identical patterns without use of the book's original digital files? It's a reference book after all.
Not saying Capcom should profit without crediting the original artist. But visual art remixing textures feels more grey area to me than copy/pasting code or someone's writing.