Also which subpixel arrangement is in use. And ambient lighting conditions. And (and this is a big one that no one seems to talk about) reading distance.
The choices they posit, for precisely the same LCD panel are going to change depending on whether it's held in the hand at 20cm or stuck to the dashboard of a car 70cm away.
Basically, I don't think this is solvable. It's cute, and within reason (e.g. for an application designed to read prose text on a known set of devices) maybe it's worthwhile. But the problem is just too hard for a general solution.
The choices they posit, for precisely the same LCD panel are going to change depending on whether it's held in the hand at 20cm or stuck to the dashboard of a car 70cm away.
Basically, I don't think this is solvable. It's cute, and within reason (e.g. for an application designed to read prose text on a known set of devices) maybe it's worthwhile. But the problem is just too hard for a general solution.