Description: Median filter code! Median filtering is in 1971 have J.W.J wkey first put forward and applied in one-dimensional signal processing (time series analysis), and later was quoted by image signal processing technique. Under certain conditions, the linear filter can overcome such as minimum mean square filtering, average filtering the image detail fuzzy, pulse interference and noise image scanning and filtering is the most effective. Especially in strong pepper or pulse interference, because the interference value and there is a big difference between adjacent pixel, and therefore the median is the result of the sorting after forced switch interference into certain pixel gray value and its neighbours, to achieve the effect of removing interference. In the actual operation process does not require statistical properties of the image and it is also a lot of convenient, but for some of the details much more special, characterized by dot, line, spire details should not be more image median filtering method is used.
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