Median-Filter vs. morphological operators on binary images to reduce noise -


typically use median-filter on grayscale images reduce salt- , peppernoise , morphologicial operators same in binary pictures. colleague asked me why don't use median on binary images instead of erosion , dilation. wasn't able answer , i'm little bit puzzled this. me , tell me if bad or idea use median-filter reduce noise in binary images?

i guess mean opening , closing, because erosion/dilation produce bigger deformation of original signal.

use "small" median filter instead of "small" opening/closing should relatively comparable on binary images.

on gray level image, median filter should less "aggressive", because uses median value (instead of minimum/maximum), , should provide better preservation of original signal.


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