An image is corrupted by Gaussian noise,then salt & pepper noise. How can you eliminate it and why?

  • 3
    $\begingroup$ Got an example? $\endgroup$
    – Jason R
    Commented Jul 2, 2012 at 15:59
  • 9
    $\begingroup$ Is this a homework question? What have you looked at so far? $\endgroup$
    – Phonon
    Commented Jul 2, 2012 at 16:47
  • $\begingroup$ if i had salt and pepper infected image and then i blurr it with gaussian noise can i restore it? $\endgroup$
    – inon
    Commented Feb 17, 2017 at 13:24

2 Answers 2


The easiest approach: First apply Median filter for salt and pepper noise, and then use Gaussian blur to eliminate Gaussian noise.


Median filter is very effective to remove salt & pepper noise. After median filtering you need to use a Image Denoising method to remove Gaussian Noise.

There are many image denoising methods(for more see wikipedia). Some of them are

Gaussian Scale Mixture algorithm.

Non Local Means method proposed by Buades et al.(pdf)


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