基于Canny理论的磁场源边界检测

英文篇名：Boundary Detection of Magnetic Field Source Based on Canny Theory
中文刊名：工程地球物理学报
英文刊名：Chinese Journal of Engineering Geophysics
作者：朱黎明 ; 王水强 ; 雷文敏
英文作者：Zhu Liming1 ; Wang Shuiqiang1 ; Lei Wenmin2(1.Shanghai Geotechnical Investigation & Design Institute Co. ; Ltd. ; Shanghai 200438 ; China ; 2.Faculty of Geophysics ; Tongji University ; Shanghai 200092 ; China)
中文关键词：边缘识别 ; Canny算子 ; 磁源
英文关键词：edge recognition ; Canny operator ; magnetic source
出版日期：2012-01-30
机构：上海岩土工程勘察设计研究院有限公司;同济大学海洋与地球科学学院;
年：2012
期：01
出版单位：工程地球物理学报

摘要

将图像处理中边缘检测与磁场资料处理中导数滤波结合起来,提出了一种基于Canny理论的磁场源边界检测方法。利用归一化水平导数的垂向导数方法作为边界增强方法对Canny算子进行改造,在保持了Canny算子原有的定位准确,信噪比高等优点的基础上,提高了Canny算子在提取磁场源边界的适应性和准确度。通过模型试验和实际资料处理,验证了该方法的正确性。
We combine boundary detection in image processing with derivative filter in magnetic data processing,and propose boundary detection of the magnetic field source based on canny theory.We use the normalized horizontal derivative as a boundary enhancement method to improve the canny operator.Canny operator has the original advantage of accurate positioning and high signal-to-noise ratio.This method maintains the advantage and improves the flexibility and accuracy in boundary detection of magnetic field source.Feasibility is proved through model test and field data processing.

引文

[1]Cordell L.Gravimetric expression of greben faultingin Santa Fe Country and Espanola Basin[A].NewMexico,in R.V.Ingersoll,ed.,Guidebook to SantaFe County:30th Field Conference,New Mexico Geo-logical Society,1979.59～64.
    [2]钟清.区域重力资料在地质填图中的边界定位问题研究[D].北京:中国地质大学,2006.
    [3]Wang W Y,Pan Y,Qiu Z Y.A new edge recognitiontechnology based on the normalized vertical derivativeof the total horizontal derivative for potential field da-ta[J].Applied Geophysics,2009,6(3):226～233.
    [4]Zhang Lili,Hao Tianyao,Wu Jiansheng,Wang Jialin.Application of image enhancement techniques to po-tential field data[J].Applied Geophysics,2005,2(3):145～152.
    [5]李红星,刘财,陶春辉.图像边缘检测方法在地震剖面同相轴自动检测中的应用研究[J].地球物理学进展,2007,22(5):1607～1610.
    [6]肖锋.重力数据处理方法的研究及其在钾盐矿勘探中的应用[D].长春:吉林大学,2009.
    [7]http://www.geosoft.com/resoueces/new/2010/100413.asp,