Anisotropy analysis of pressed point processes
Anisotropy analysis of pressed point processes
复制标题
压点过程的各向异性分析
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
K. Schladitz
中科院分区：
文献类型：
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作者：
C. Redenbach;A. Särkkä;J. Freitag;K. Schladitz
本文介绍了由规则三维点图像压缩引起的各向异性的检测方法。发展了基于方向汇总统计量和压缩系数估计器的各向同性检验。利用模拟数据，研究了这些方法的威力与强度、规整度和抗压强度的关系。最后，将我们的方法应用于从冰芯层析图像中提取的气孔中心的点模式。这样，冰盖压缩引起的各向异性的存在以及其强度随着深度的增加而增加的情况被显示出来。
This paper introduces methods for the detection of anisotropies which are caused by compression of regular 3D point patterns. Isotropy tests based on directional summary statistics and estimators for the compression factor are developed. Using simulated data, the dependence of the power of these methods on the intensity, the degree of regularity, and the compression strength is studied. Finally, our methods are applied to the point patterns of centers of air pores extracted from tomographic images of ice cores. This way the presence of anisotropies in the ice caused by the compression of the ice sheet and an increase of their strength with increasing depth are shown.