Nearest-neighbor median filter
Kazuyoshi Itoh, Yoshiki Ichioka, Tatsuya Minami · Applied Optics · 1988
A new generalized version of the median filter is proposed. The new version preserves clear definitions of image details while keeping the ability of removing the impulsive noise; it is still simple in principle and easy to use. The input-output relationship and noise-removing power of the new version are compared with those of the standard median filter.