5x5 Pixel font for tiny screens

There are also several 32x32 led panels, which one could imagine needing some text.

Also, this kind of thing is just interesting, regardless of the usefulness.

https://chinese.stackexchange.com/questions/16669/lowest-pix...

However, 5x5 isn't enough to draw "e" properly if you also want lowercase letters to have less height than uppercase, so you need at least 6 vertical pixels. And then that isn't enough to draw any character with a descender properly, so you need at least 7 vertical pixels (technically you should have 8 in order to allow "g" and "y" to have a distinct horizontal descender while still sitting on the baseline, but this is probably an acceptable compromise). And remember that in practice this means you will still need at least 8x6 pixels to draw each character, to allow for a visible gap between letters below and beside them.

* a huge corpus of historical imagery

* cheaper grayscale cameras + post processing will surely enable all sorts of uses we haven't imagined yet.

* a lower power CCD and post-processing after the fact or on a different device allows for better power budget in cheap drones (etc).

* these algorithms can likely be tuned or used as a stepping stone for ones that convert non-visible wavelengths into color images.

And that's just off the top of my head as someone who doesn't really work with that stuff. I'm sure there are plenty of other reasons I can't think of.