Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004an....325..259a&link_type=abstract
Astronomische Nachrichten, Vol.325, Issue 3, p.259-262
Astronomy and Astrophysics
Astronomy
8
Techniques: Image Processing, Methods: Numerical, Methods: Data Analysis, Occultations, Stars: Imaging
Scientific paper
2-CLEAN DSA method of Determination of permissible Solutions Area created on the basis of the Radioastronomical approach to image reconstruction from few projections is presented as a component of astrotomography and also as a method of reconstruction, as it has good prospects for a wide range of remote sensing. Its basis was described and published before 1990 in the application to the reconstruction of 2D-images. Later the method received its name and was thoroughly developed, in particular for 3-D reconstruction from 2D and 1D-projections. 2-CLEAN DSA method allows to carry out 2D-recognition in a wide space frequency band 0,ωb constrained only by the upper frequency ωb when the number of 1D-projections contains only ˜ 0.1 of the number needed for the usual tomographical approach. It easily adapts to the wide range of additional constraints. Some of the important points connected with 2D-reconstruction of the images and sections of optically thin emissive objects are described.
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