Median Filtering: Review and a New F/k Analogue Design
نویسنده
چکیده
Median tilters operate by selecting the middle valve of an ascending-ordered scqucncc of numbers. These numbers are taken from a moving window on the data to be processed. The operation can be used in seismic data processing to reject glitches on data as well as enhance disconbnuiries in the dara. This paper reviews the definibons and some of the properties of median filters. The median filter is very useful in Vertical Seismic Profile (VSP) data processing and automatic editing of sulface seismic data. It is also used in seismic processing to enhance linear events. A new mrdian filter design is discussed here which uses a box of numbers (2-D arrayl and weights to achieve some of the properties of an f/k filter while retaining median tiller characreristics. Early tests indicate that this new tiller rejects spikes, smears discontinuities less than standard f/k filters. and passes a range of dipping evcots.
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