We have this already actually. Not quite up-to-date on the current hotness, but, we've used a set of images called "the roman 16" which accomplishes exactly tha

We have this already actually. Not quite up-to-date on the current hotness, but, we've used a set of images called "the roman 16" which accomplishes exactly that and more. They're not really used for compression testing inasmuch as they're used to evaluate output quality of various imaging devices/workflows/etc