Step-Edge Detection Filters for the Interpretation of Potential Field Data

Step-Edge Detection Filters for the Interpretation of Potential Field Data
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用于解释位场数据的阶跃边缘检测滤波器

DOI:
10.1007/s00024-015-1053-6
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发表时间:
2016-11
影响因子:
2
通讯作者:
Liu Cai
Liu Cai
中科院分区:
地球科学3区
文献类型:
--
作者:
Ma Guoqing;Huang Danian;Liu Cai

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边缘检测是位场数据解释中的一种有效工具,现有的边缘检测滤波器几乎都是一阶水平和垂直导数的函数。为了提高边缘检测结果的分辨率,我们提出了阶跃边缘检测滤波器,它使用不同阶导数的函数来完成边缘检测任务。我们在合成位场数据上验证了所提出的滤波器,结果表明,新方法可以更准确、更清晰地识别源的边缘。讨论了不同阶跃边缘检测滤波器的应用效果。最后,将所提出的滤波器应用于真实的位场数据,识别出的地层标志边缘更加精确、清晰。
Edge detection is a useful tool in the interpretation of potential field data, and the existing edge detection filters are almost functions of first-order horizontal and vertical derivatives. We propose step-edge detection filters to improve the resolution of edge detection results, which use the functions of different-order derivatives to accomplish the edge detection task. We demonstrate the proposed filters on synthetic potential field data, and the results show that the new methods can recognize the edges of the sources more precisely and clearly. We also discuss the application effect of different step-edge detection filters. Lastly, we apply the proposed filters to real potential field data, and the recognized edges of the stratigraphic markers are more precise and clear.
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