Title :
Stack filter design: a structural approach
Author_Institution :
R&D Center, Nokia Mobile Phones, Oulu, Finland
fDate :
4/1/1995 12:00:00 AM
Abstract :
A new approach is developed for finding the optimal stack filter that minimizes noise subject to constraints on its structural behavior. Based on the output moments of stack filters, it is proven that the optimal stack filter is a combination of the median filter, which has the same window width as the stack filter, and a set of maximum and minimum filters, which are attributed to the structural constraints. Design examples for 1-D signal processing and image processing are provided
Keywords :
circuit optimisation; filtering theory; image processing; median filters; signal processing; 1-D signal processing; image processing; maximum filters; median filter; minimum filters; noise minimisation; nonlinear filters; optimal stack filter design; structural approach; structural constraints; window width; Attenuation; Digital filters; Filtering; Image processing; Noise shaping; Nonlinear filters; Shape; Signal design; Signal processing; Statistics;
Journal_Title :
Signal Processing, IEEE Transactions on
