Unless there's a parallel repository of all the images in a form that's easy to search (some kind of sparse, feature-rich form that's quick CV-match friendly),

Unless there's a parallel repository of all the images in a form that's easy to search (some kind of sparse, feature-rich form that's quick CV-match friendly), which isn't the hash, you're going to have a hard time with that initial assessment and enforcement of potential infringers. That right there could be a pretty expensive system to maintain and it isn't ideal to distributed across a bunch of blockchain participants, it probably has to live in a Kodak server farm somewhere.