Weighted D-filtering

Wen-Rong Wu*, Amlan Kundu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


A new type of filter which has the most desirable properties of an image smoothing filter is proposed. These properties are 1) robust smoothing efficiency, 2) edge preservation, and 3) thin-line detail preservation. The new filter, called the weighted D filter, computes its output as the median of weighted averages, instead of plain averages as used in the Hodges-Lehman D filter, of symmetrically placed order statistics. Experiments in which one particular weighting scheme is considered in detail are discussed. The experimental and comparison results verify the useful properties of the proposed filter.

Original languageEnglish
Pages (from-to)446-449
Number of pages4
JournalIEEE transactions on circuits and systems
Issue number4
StatePublished - 1 Apr 1991

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