Principles of image reconstruction in optical interferometry: tutorial

Éric Thiébaut (1) , John Young (2)

1 CRAL - Centre de Recherche Astrophysique de Lyon
2 Cavendish Laboratory

This paper provides a general introduction to the problem of image reconstruction from interferometric data. A simple model of the interferometric observables is given, and the issues arising from sparse Fourier data are discussed. The effects of various regularizations are described. In the proposed general framework, most existing algorithms can be understood. For an astronomer, such an understanding is crucial not only for selecting and using an algorithm but also to ensure correct interpretation of the resulting image.

Mots clés: Interferometric imaging; Inverse problems; Image reconstruction-restoration

Domaines: Traitement du signal et de l'image [eess.SP]; Instrumentation et méthodes pour l'astrophysique [astro-ph.IM]

Éric Thiébaut, John Young. Principles of image reconstruction in optical interferometry: tutorial. Journal of the Optical Society of America. A Optics, Image Science, and Vision, 2017, 34 (6), pp.904-923. ⟨10.1364/JOSAA.34.000904⟩. ⟨hal-01577899⟩