title: Generalized multistage median filters.
abstract: As an extension of the multistage median filters, a class of r -filters is presented. Some properties of these filters are discussed. It is shown that the filters can smooth noise and preserve details of images efficiently.
authors.affiliation: Dept. of Electron., Shandong Polytech. Univ., Jinan.
authors.forename: X
authors.initials: X
authors.lastname: Wang