them out and they're going to be a black and finally there's the salt and pepper noise where some fraction of the elements the chosen at random and you can basically set them either to the minimum possible value or maximum possible value so instead of basically it's it's a version of masking where instead of just assigning masks to be 0 you can randomly assign the mask to be 0 1 so these are three different noises to consider in the paper you can note that as pixel level noise so you can think of denoising auto-encoders basically