基于截面轮廓线人机交互三维地质体建模
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摘要
利用截面信息重构三维体是地质三维解释方法的重要发展方向,这里在研究最小表面积和最大体积法的基础上,吸取"最短对角线法"的优点,提出了最优路径(OP)算法,将二维截面的属性块自动连接成三维体,并与计算机图形交互技术结合,形成人机交互建模技术。该方法具有原理简单,易于实现和三角形连接效果较好等特点,对提高地质、物探数据解释工作的效率和准确性有着重要意义。
Using cross-sections information to reconstruct 3D model is the important development direction of 3D geological interpretation.In this paper,on the basis of the minimum surface area and the maximum volume method,assimilating the merit of 'the shortest diagonal',the optimal path(OP) algorithm is proposed,and property part of 2D cross-sections are automatically linked into 3D body,and technology of human-computer interaction modeling combining with the technology of computer graphics is formed.This method is simple in principle and easy to implement,also it is better in triangle-connection,which is very meaningful to improve the efficiency and accuracy of the geophysical data interpretation.
Using cross-sections information to reconstruct 3D model is the important development direction of 3D geological interpretation.In this paper,on the basis of the minimum surface area and the maximum volume method,assimilating the merit of 'the shortest diagonal',the optimal path(OP) algorithm is proposed,and property part of 2D cross-sections are automatically linked into 3D body,and technology of human-computer interaction modeling combining with the technology of computer graphics is formed.This method is simple in principle and easy to implement,also it is better in triangle-connection,which is very meaningful to improve the efficiency and accuracy of the geophysical data interpretation.
引文
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[2]张亚敏,张书法.二维地震叠加偏移剖面“二步法偏移”地质解释方法[J].西安石油大学学报(自然科学版),2009,24(1):34.
[3]FUCHS H,KEDEM Z M,USELTON S P.Optimal Sur-face Reconstruction from Planar Contours[J].Communi-cation of the ACM,1977,20(10):693.
[4]KEPPEL E.Approximating Complex Surface by Triangu-lation of Contour Lines[J].IBM Journal Res Develop1975,1:2.
[5]HOULDING S W.3D Geosciences Modeling-ComputerTechniques for Geological Characterization[M].BerlinHeidelberg:Springer?Verlag,1994.
[6]VICTOR JD TSAI.Delaunay Triangulations in TINCrea-tion:An overview and a linear-time algorithm[J].In-ternational Journal of Geographical Information Systems,1993,7(6):501.
[7]屈红刚,潘懋,王勇,等.基于含拓扑剖面的三维地质建模[J].北京大学学报(自然科学版),2006,42(6):717.
[8]吴文鹂,管志宁,高艳芳,等.重磁异常数据三维人机联作模拟[J].物探化探计算技术,2005,27(3):227.
[9]李光亮,肖海红,徐遵义,等.平行轮廓线构建复杂断层地质模型研究[J].煤田地质与勘探,2007,35(2):22.
[10]陈华根,吴健生,王家林,等.剖面叠置思想在地球物理反演建模中的应用[J].同济大学学报,2003,31(11):1309.
[11]唐泽圣.三维数据场可视化[M].北京:清华大学出版社,2000.
[12]CHRISTIANSENHN,SEDERBERG TW.Conversion ofComplex Contour Line Definitions into Polygonal Ele-ment Mosaics[J].Computer Graphics,1978,12(2):187.
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