Or to put a concrete point on it, Photoshop's content aware fill is ("merely") the implementation of a particular SIGGRAPH paper. The math itself isn't copyrigh

Or to put a concrete point on it, Photoshop's content aware fill is ("merely") the implementation of a particular SIGGRAPH paper. The math itself isn't copyrightable, but Adobe is going to come after you if you stick their .dll files on GitHub, and probably win.