A Survey Paper on Various Median Filtering Techniques for Noise Removal from Digital Images
Prateek Garg, Pushpneel Verma, Ankur Bhardwaz · 2014
One of the noise types that is normally degrades digital images, including grayscale digital images, is impulse noise. Therefore, researches regarding to impulse noise removal have become one of the active researches in the field of image restoration. The existence of impulse noise is one of the most frequent problems in many digital image processing applications. Median based filter is normally becoming the choice to deal with this type of noise. However; there are many variations of median filter in literature. In addition to standard median filter there are weighted median filter, iterative median filter, recursive median filter, directional median filter. Switching median filter, and adaptive median filter. Therefore, this paper will survey these median filtering frameworks. Index Terms: Impulse noise, median filter, standard median filter, weighted median filter, iterative median filter, recursive median filter, directional median filter, switching median filter, adaptive median filter.