Title :
Directed graph representation for root-signal set of median filters
Author :
Yom, Dong Hong ; Ann, Souguil
Author_Institution :
Seoul National University, Seoul, Korea
Abstract :
Median filtering is a simple digital technique for smoothing signals. A root signal is defined as an invariant signal to the median filtering. We describe directed graph representation for the root-signal set of median filters. The directed graph representation allows us to obtain a set of roots and the number of roots in a straightforward manner.
Keywords :
Band pass filters; Digital filters; Filtering; Image processing; Noise cancellation; Radar applications; Signal analysis; Signal processing; Smoothing methods; Speech processing;
Journal_Title :
Proceedings of the IEEE
DOI :
10.1109/PROC.1987.13918
