Geodesic
Correction of solar dopplergrams' large-scale flatfield
Numerical methods and programming, Tome 6 (2005) no. 1, pp. 253-256

Voir la notice de l'article provenant de la source Math-Net.Ru

The authors have proposed and compared three different methods of large-scale flatfield correction (time averaging, Fourier filtering, and wavelet-based filtering). As an example, the real dopplergram of the velocity field in a solar active region obtained at the Huairou Solar Observing Station of National Astronomical Observatories of China has been processed. It is shown that any of the applied methods can improve the visual quality of the image. A quantitative comparison of the proposed methods was performed by evaluating the heterogeneity of the images.
Keywords: wavelet-based methods; filtering; data analysis. 
@article{VMP_2005_6_1_a23,
     author = {I. A. Patrikeev and G. P. Mashnich and A. I. Khlystova and H. Zhang},
     title = {Correction of solar dopplergrams' large-scale flatfield},
     journal = {Numerical methods and programming},
     pages = {253--256},
     publisher = {mathdoc},
     volume = {6},
     number = {1},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMP_2005_6_1_a23/}
}
TY  - JOUR
AU  - I. A. Patrikeev
AU  - G. P. Mashnich
AU  - A. I. Khlystova
AU  - H. Zhang
TI  - Correction of solar dopplergrams' large-scale flatfield
JO  - Numerical methods and programming
PY  - 2005
SP  - 253
EP  - 256
VL  - 6
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/VMP_2005_6_1_a23/
LA  - ru
ID  - VMP_2005_6_1_a23
ER  - 
%0 Journal Article
%A I. A. Patrikeev
%A G. P. Mashnich
%A A. I. Khlystova
%A H. Zhang
%T Correction of solar dopplergrams' large-scale flatfield
%J Numerical methods and programming
%D 2005
%P 253-256
%V 6
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/VMP_2005_6_1_a23/
%G ru
%F VMP_2005_6_1_a23
I. A. Patrikeev; G. P. Mashnich; A. I. Khlystova; H. Zhang. Correction of solar dopplergrams' large-scale flatfield. Numerical methods and programming, Tome 6 (2005) no. 1, pp. 253-256. http://geodesic.mathdoc.fr/item/VMP_2005_6_1_a23/