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Parametric analysis of weighted order statistics filters

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3 Author(s)
Ruikang Yang ; Audio-Visual Process. Lab., Nokia Res. Center, Tampere, Finland ; Gabbouj, M. ; Pao-Ta Yu

The authors study the convergence properties of weighted order statistics filters. Based on a set of parameters, weighted order statistics filters are divided into five categories making their convergence properties easily understood. They show that any symmetric weighted order statistics filters will make the input sequence converge to a root or oscillate in a cycle of period 2. This result is significant since a restriction imposed by an earlier research is eliminated making the result applicable for the whole class of symmetric weighted order statistics filters. A condition to guarantee convergence of symmetric weighted order statistics filters is also derived.<>

Published in:

Signal Processing Letters, IEEE  (Volume:1 ,  Issue: 6 )