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You can generate noise with whichever shape, size and frequency distribution you need. It's entirely possible to emulate film grain computationally. one exampl

• underwater 4y ago
  That's why I said digital noise. If you're using randomness to generate something that emulates film grain then by definition it's not noise, it's a procedurally generated texture. The point was that many editing tools offer noise generation that works at a pixel level. The author was explaining why those are unsuitable for the task. That doesn't make it nonsense.
  • ginsider_oaks 4y ago
    Are noise and procedurally generated textures mutually exclusive? The Wikipedia article for gradient noise[1] says: > Gradient noise is a type of noise commonly used as a > procedural texture primitive in computer graphics. [1]: https://en.wikipedia.org/wiki/Gradient_noise https://en.wikipedia.org/wiki/Gradient_noise