Optimised edge detection filters in the interpretation of potential field data

Lili Li; Danian Huang; Liguo Han; Guoqing Ma

doi:10.1071/EG13059

ISSN: 0812-3985
E-ISSN: 1834-7533

Optimised edge detection filters in the interpretation of potential field data
Authors Lili Li^a,b, Danian Huang^a, Liguo Han^a and Guoqing Ma^a
View Affiliations Hide Affiliations

^a College of Geoexploration Science and Technology, Jilin University, Changchun 130061, China. ^b Corresponding author. Email: [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: Exploration Geophysics, Volume 45, Issue 3, Sep 2014, p. 171 - 176
DOI: https://doi.org/10.1071/EG13059
- Received: 21 Jul 2013
- Accepted: 20 Jan 2014
- Published online: 01 Sep 2014

Abstract

[

Many of the existing balanced edge detection filters of potential field data only use the feature that the vertical derivative is zero above the source edges to recognise the source edges. This will produce spurious edges in the interpretation of potential field data. In order to solve this disadvantage, a new format of the edge detection filter is presented, which produces maximum values only when the horizontal derivative is a maximum and the vertical derivative is zero, so the new filters will not produce spurious edges, and will provide more accurate results. The proposed filters are tested on synthetic potential field data. The recognised edges are shown to be consistent with the true edges, and do not produce additional edges. Moreover, the proposed filter suppresses the effect of noise, and displays the edges more clearly compared to previous edge detection filters. It is also applied to real magnetic data to obtain the horizontal locations of iron ore.

A new format of edge detection filter, called the optimised edge detection filter, is presented, which produces maximum values only when the horizontal derivative is a maximum and the vertical derivative is zero. These new filters will not produce spurious edges like those in other methods.

]

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Optimised edge detection filters in the interpretation of potential field data

Exploration Geophysics 45, 171 (2014); https://doi.org/10.1071/EG13059

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Article Type: Research Article

Keyword(s): edge detection, optimised, potential field.

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Optimised edge detection filters in the interpretation of potential field data

Abstract

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