How many pixels are in `I` vs how many are in `W`? different averages as a result. With subpixel rendering, kerning, etc, there is minute differences between th

How many pixels are in `I` vs how many are in `W`? different averages as a result. With subpixel rendering, kerning, etc, there is minute differences between the averages of `IW` and `WI` as well, order can be observed. It is almost completely based on having so much extra knowledge: the background of the text, the color of the text, the text renderer, the font, etc, there are a massive amount of unknowns if it is a random picture, but if we have all this extra knowledge, it massively cuts down on the amount of things we need to try: if its 4 characters, we can make a list of all possibilities, do the same mosaic, and find the closest match, in nearly no time.