Segmentation Of Photospheric And Chromospheric Solar Features

Details Segmentation Of Photospheric And Chromospheric Solar Features Segmentation Of Photospheric And Chromospheric Solar Features

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005soph..228...81b&link_type=abstract

Solar Physics, Volume 228, Issue 1-2, pp. 81-95

Physics

8

Scientific paper

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.

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