Edge enhancement of potential-field data using normalized statistics

Abstract

Edge enhancement in potential-field data helps geologic interpretation.Therearemanymethodsforenhancingedges, most of which are high-passfilters based on the horizontal or vertical derivatives of the field. Normalized standard devia- tionNSTD,anewedge-detectionfilter,isbasedonratiosof the windowed standard deviation of derivatives of the field. NSTDisdemonstratedusingaeromagneticdatafromAustra- lia and gravity data from SouthAfrica. Compared with other