Step-Edge Detection Filters for the Interpretation of Potential Field Data
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- 作者：Guoqing Ma ; Danian Huang ; Cai Liu
- 刊名：Pure and Applied Geophysics
- 出版年：2016
- 出版时间：March 2016
- 年：2016
- 卷：173
- 期：3
- 页码：795-803
- 全文大小：3,190 KB
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Danian Huang (1)
Cai Liu (1)
1. College of Geoexploration Science and Technology, Jilin University, Changchun, China - 刊物类别：Earth and Environmental Science
- 刊物主题：Earth sciences
Geophysics and Geodesy - 出版者：Birkh盲user Basel
- ISSN：1420-9136
文摘
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.