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Segmentation of the solar radioimages

B. I. Lubyshev, A. G. Obukhov, B. B. Krissinel, V. P. Maksimov

Transactions of IAA RAS, issue 24, 330–336 (2012)

Keywords: radioastronomy, radio telescope, solar radio-image, Wiener-Tikhonov's filter

Abstract

To find out faint contrast formations in distributions of radiobrightness of the solar corona, received at wavelength 5.2 sm on the Siberian solar radio telescope (SSRT), we develop algorithm on the basis of updating the Wiener-Tikhonov's filter with operated parameters and the high-frequency contrasting filter. The revelation of faint contrast sources thus consists of two basic stages: 1) smoothing of high-frequency noise on the basis of the evolutionary filter with adjustable parameters, 2) contrastization of sources by means of the high-frequency filter. Parameters of regularization of the evolutionary filter and the sizes of a mask of the high-frequency contrasting filter get out depending on the signal/noise relation and the sizes of investigated area by preliminary results of processing. Filters are applied consistently. Digital data processing of SSRT's data is carried out in a dialogue mode. The corresponding software is developed for processing radioimages of the Sun by this method of recognition of faint contrast formations. Results of use of algorithm on examples of revelation of filaments and coronal holes are presented.

Citation

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B. I. Lubyshev,  A. G. Obukhov, B. B. Krissinel, V. P. Maksimov . Segmentation of the solar radioimages // Transactions of IAA RAS. — 2012. — Issue 24. — P. 330–336.

@article{lubyshev2012,
  abstract = {To find out faint contrast formations in distributions of radiobrightness of the solar corona, received at wavelength 5.2 sm on the Siberian solar radio telescope (SSRT), we develop algorithm on the basis of updating the Wiener-Tikhonov's filter with operated parameters and the high-frequency contrasting filter. The revelation of faint contrast sources thus consists of two basic stages: 1) smoothing of high-frequency noise on the basis of the evolutionary filter with adjustable parameters, 2) contrastization of sources by means of the high-frequency filter. Parameters of regularization of the evolutionary filter and the sizes of a mask of the high-frequency contrasting filter get out depending on the signal/noise relation and the sizes of investigated area by preliminary results of processing. Filters are applied consistently. Digital data processing of SSRT's data is carried out in a dialogue mode. The corresponding software is developed for processing radioimages of the Sun by this method of recognition of faint contrast formations. Results of use of algorithm on examples of revelation of filaments and coronal holes are presented.},
  author = {B.~I. Lubyshev and A.~G. Obukhov and B.~B. Krissinel and V.~P. Maksimov},
  issue = {24},
  journal = {Transactions of IAA RAS},
  keyword = {radioastronomy, radio telescope, solar radio-image, Wiener-Tikhonov's filter},
  pages = {330--336},
  title = {Segmentation of the solar radioimages},
  url = {http://iaaras.ru/en/library/paper/875/},
  year = {2012}
}

TY  - JOUR
TI  - Segmentation of the solar radioimages
AU  - Lubyshev, B. I.
AU  - Obukhov, A. G.
AU  - Krissinel, B. B.
AU  - Maksimov, V. P.
PY  - 2012
T2  - Transactions of IAA RAS
IS  - 24
SP  - 330
AB  -   To find out faint contrast formations in distributions of
radiobrightness of the solar corona, received at wavelength 5.2 sm on
the Siberian solar radio telescope (SSRT), we develop algorithm on
the basis of updating the Wiener-Tikhonov's filter with operated
parameters and the high-frequency contrasting filter. The revelation
of faint contrast sources thus consists of two basic stages: 1)
smoothing of high-frequency noise on the basis of the evolutionary
filter with adjustable parameters, 2) contrastization of sources by
means of the high-frequency filter. Parameters of regularization of
the evolutionary filter and the sizes of a mask of the high-frequency
contrasting filter get out depending on the signal/noise relation and
the sizes of investigated area by preliminary results of processing.
Filters are applied consistently. Digital data processing of SSRT's
data is carried out in a dialogue mode. The corresponding software is
developed for processing radioimages of the Sun by this method of
recognition of faint contrast formations. Results of use of algorithm
on examples of revelation of filaments and coronal holes are
presented.
UR  - http://iaaras.ru/en/library/paper/875/
ER  -