Adds noise - much like the "snow" you see on a television with bad reception - to your image. The noise can range from very subtle, to overpowering. The Type setting controls the distribution of the noise. You can choose either Uniform, or Gaussian, which is distributed based upon a mathematical formula. The Amount slider controls how much noise to add to the image and ranges from 0 to 1000. Mean controls how the noise affects the underlying image. By default, noise is multi-colored, with the colors being random. Checking the onochromatic checkbox causes the noise to be made of only shades of gray.
