一种面向三维地质剖面的形体表面重构算法

发布时间：2018-06-18 00:22

本文选题：三维重构 + 地质剖面　；参考：《地理与地理信息科学》2017年01期

【摘要】：在地学建模领域,三维表面形体重构方法大多是基于二维平行轮廓线,但有时会有既不平行也不交叉的剖面出现。为此,该文基于最短对角线法的基本思路,提出了一种面向地质剖面的三维空间轮廓线表面形体重构方法。该方法从平行剖面拓展到任意排列的剖面,在实现三维空间相关运算的基础上,通过基于均匀插值的三维非凸变换方法对原算法进行了改进,既适用于平行和非平行地质剖面的三维形体重构,同时又能处理真实地质剖面可能出现的复杂情形,譬如轮廓线不对中、轮廓线上点分布不均匀、轮廓线非凸等。最后,利用矿区真实地质剖面实现了形体重构,并通过与利用三维建模软件GOCAD得到的结果进行比较,验证了该算法对复杂地质体重构的实用性和健壮性。
[Abstract]:In the field of geoscientific modeling, 3D surface shape reconstruction methods are mostly based on two-dimensional parallel contours, but sometimes there are sections that are neither parallel nor intersecting. Therefore, based on the basic idea of the shortest diagonal method, this paper presents a method of surface shape reconstruction of 3D spatial contour for geological profile. The method is extended from parallel section to arbitrarily arranged section. On the basis of realizing three-dimensional spatial correlation operation, the original algorithm is improved by using three-dimensional non-convex transformation method based on uniform interpolation. It is not only suitable for 3D reconstruction of parallel and non-parallel geological profiles, but also capable of dealing with complex situations that may occur in real geological profiles, such as misalignment of contour lines, uneven distribution of points on contour lines, non-convex contour lines, and so on. Finally, the real geological section of mining area is used to realize the shape reconstruction, and by comparing with the result obtained by using the 3D modeling software GOCAD, the practicability and robustness of the algorithm for the reconstruction of complex geological bodies are verified.
【作者单位】：中南大学地球科学与信息物理学院;有色金属成矿预测教育部重点实验室;
【基金】：国家自然科学基金项目(41472301) 湖南省自然科学基金项目(10JJ6060)
【分类号】：P628;TP391.7

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