Quasi-median gray image filtering via distance transformation
В. В. Старовойтов · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 1995
The construction of filters or filter operators is an important problem in image processing. In this paper it is described how one can construct a filter operator based on the Distance Transformation for grey-scale image. This operator is similar to max/min filters for grey-scale images. We call this operator quasi-median filter. It is not a filter from the morphological point of view like median filter, but it posses filter (mean) properties.