Pseudomedian Filter
William K. Pratt, Ted J. Cooper, Ihtisham Kabir · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 1985
This paper introduces a new image processing algorithm, called the pseudomedian filter, which is based on concepts of morphological image processing. The pseudomedian filter possesses many of the properties of the median filter, but it can be computed much more efficiently.