Median-rational hybrid filters for image restoration

L. Khriji*, M. Gabbouj

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


A new class of nonlinear filters is introduced, called median-rational hybrid filters (MRHFs), based on rational functions (RFs). The output is the result of rational operation taking into account three sub-functions. It is shown that every sub-function will preserve details within its sub-windows. The proposed MRHF filters have the inherent property that on smooth areas they provide good noise attenuation whereas on changing areas the noise attenuation is traded for good response to change. It is shown that a consistent reduction in the objectively measured mean absolute error and mean square error is obtained.

Original languageEnglish
Pages (from-to)977-979
Number of pages3
JournalElectronics Letters
Issue number10
Publication statusPublished - May 14 1998
Externally publishedYes

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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