This is where I take issue with the paper. The sub blobs are really important because different displays/focal plane arrays have different pixel arrangements t

This is where I take issue with the paper. The sub blobs are really important because different displays/focal plane arrays have different pixel arrangements that can be dramatically different. You can't assume it'll be a collection of three sub-elements (often there will be different ratios in a complex arrangement) or that the pixel is even being displayed as RGB (CMY?). You have to know some things about your pixel arrangements in order to properly anti-alias, font render, or display camera images, otherwise the result can be pretty ugly.