For each value in the image, simply generate a random number 1..256; if it is greater than the image value at that point, plot the point white, otherwise plot it black. That's it. This generates a picture with a lot of "white noise", which looks like TV picture "snow". Though the image produced is very inaccurate and noisy, it is free from "artifacts" which are phenomena produced by digital signal processing.
original image
Saturday, 10 March 2012
Random Dithering
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