Segmentation of photospheric and chromospheric solar features

被引：21

作者：

Berrilli, F ^{[1
]}

Del Moro, D ^{[1
]}

Florio, A ^{[1
]}

Santillo, L ^{[1
]}

机构：

[1] Univ Roma Tor Vergata, Dipartimento Fis, I-00133 Rome, Italy

来源：

SOLAR PHYSICS | 2005年 / 228卷 / 1-2期

关键词：

D O I：

10.1007/s11207-005-5000-z

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We describe the application of a multi-scale Laplacian-of-Gaussian (LoG) operator and of an iterative version of Medial Axis Transform (i-MAT) as tools for the segmentation of both photospheric and chromospheric solar features. We introduce the multi-scale LoG operator in order to extract compact structures in photospheric intensity or Doppler images. The second method, based on a i-MAT algorithm applied to gray level images, is introduced to recognize reticulated structures like chromospheric network or intergranular lanes. The developed numerical procedures allow a non-subjective segmentation of solar images in order to investigate morphological and topological properties of identified features. We discuss the output of the segmentation procedures when applied to real images.

引用

页码：81 / 95

页数：15

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