[Award Winner] Bitmapped Images - The technical side of things explained.

[Redrobes]

Reserved space - but this one came up recently too.
EDIT -- actually this comes up a lot and again today so here we go again... how to resample up just B&W stuff.

First, upsample anyway you like in factors of double (200%) in stages until one more is less than double (say 1.7).
For each stage double the size of the image which makes it pixellated - a nearest neighbor / pixel resize is fine.
Next, blur it - preferably using gaussian blur. The amount of blur radius can be experimented with but about a factor of 3 pixels or so.
Then use contrast to clamp it back to being B&W again. Actually I use about 95% or so not 100% but its up to you. Dont brighten it or darken it when you do it, just up the contrast.
Keep doing this in stages until the last stage is <200% in which case you might want slightly less blur than usual but not by much.
Here is the results. Everything is cool except for where there is an acute internal angle where it tends to start filling in depending on the amount of blur used. So less blur helps, but more blur is better to get rid of pixellation. You have to experiment with it.