"Poster Maker" allows you to create posterized versions of your images. You can control colour and tone, abstraction, and colour depth. You can even make a halftone image, with realistic registration drift! NOTE: This is an update of my original Poster Maker: I’ve made the halftone texture a bit more realistic by adding a separate black channel and by adding a component that varies the dot size -- per channel -- based on luminosity (many thanks to ThreeDee’s “Digital Halftone” for showing me how this works!). I’ve also given you better colour/tone controls and streamlined the filter a bit. CONTROLS OF NOTE: “Preserve Colour”: Sometimes adjusting the shadows, midtones, and highlights can cause a colour shift in your image. Click this checkbox to preserve the original hues. "Registration Drift": If you're using the "Halftone" option, this slider controls how far out of alignment with each other the cyan, magenta, yellow, and black dots are, simulating a bad print job.
February 13, 2008