[Rolpa]

Here's an inquiry for those more knowledgeable about IP law than myself: what's the state of the law regarding training an AI on copyrighted material besides code? I was debating this with someone in relation to the high definition texture packs for old games people have been making using models such as ESRGAN - do these infringe the copyright of the rights holders of the original assets? Or are they considered sufficiently transformative to be considered an original work?