In this paper

a new method is proposed for removing and restoring random-valued impulse noise in images in order to preserve fine details.At first

based on a similar neighbor criterion

seed pixels are extracted.Then switch median filter is applied to the seed pixels for removing the misjudged seed pixels with an adaptive window size.Lastly

the missing seed pixels are probed firstly and then the noise pixels are restored both using the seed pixels.Compared with other well-known methods

this technique achieves superior performance.