National Research Council of Canada. NRC Institute for Aerospace Research
Algorithms; Color image processing; Gain control; Geological surveys; Mapping; Rock mechanics; Histogram equalization; Logarithmic transformation; Magnetic prospecting
An alternative logarithmic transformation procedure is proposed for emphasizing the structural information present in magnetic data. The procedure enhances subtle geologic information present at low-amplitude values and yet preserves the relative amplitude information. The application of the procedure is demonstrated by considering a portion of a 1983 helicopter-based aeromagnetic survey of the Hemlo gold camp on the north shore of Lake Superior.