I want to convert greyscale images to ones that have just black and white pixels.
Simply dividing the input pixels into black or white based on being below or above a set grey level, doesn't give nice results. I'm therefore looking for an algorithm that does some rasterisation.
My internet search led to many tutorials on how to rasterise using PhotoShop and similar applications, which is not what I'm after.
Would anyone be willing to point me to an online source that explains this kind of algorithms and/or explain a bit how to approach this problem?