Digital Image Processing of Airborne Radiometric and Magnetic Data From Central Qaidam Basin
Zhang Yujun, 1989. "Digital Image Processing of Airborne Radiometric and Magnetic Data From Central Qaidam Basin", An Overview of Exploration Geophysics in China — 1988, Zhao Jingxiang, Wang Yanjun, Fu Xuexin, Stanley H. Ward
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A description is given of the methods and results of displaying, enhancing, and interpreting airborne radiometric and magnetic data using digital image processing techniques. The processed data, taken over Central Qaidam Basin of Qinghai Province, were chiefly for investigating the evaporite-type of potash deposits.
The developed image restoration method for airborne radiometric data gave good results in reduction of striped noise formed by the unstable atmospheric background.
Using ternary, binary, and ratio images; scattergrams; level-slices; first and second gradients; shaded-relief; rose diagrams; and other images I studied and extracted geologic information on five problems: direct detection of potassium, lithological mapping, study of sedimentation of potash deposits, extraction of structural traces, and detection of gas anomalies.
The work shows that the digital image processing techniques for representing and interpreting airborne-geophysical data have better clarity, higher rapidity, and easier integration of multiparameters.
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“This is the first collection of technical papers providing a general picture of exploration geophysics in China. Many case histories are included, plus some theory and technical developments.”