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Paketbeschreibung


Paketnameyorick-mira
Beschreibungoptical intreferometry image reconstruction within Yorick
Archiv/RepositoryOffizielles Debian Archiv squeeze (main)
Version0.9.9+dfsg1-2
Sektionscience
Prioritätextra
Installierte Größe388 Byte
Hängt ab vonyorick-yeti (>= 6.2.0), yorick-yeti-fftw (>= 6.2.0), yorick-yutils, yorick-optimpack (>= 1.3), yoric
Empfohlene Pakete
PaketbetreuerThibaut Paumard
Quelle
Paketgröße92786 Byte
Prüfsumme MD50be7e96a31b141b67b39be7256b7034c
Prüfsumme SHA1f691a8cacb386287c2262c6fb0656e9029202504
Prüfsumme SHA256dea387a9dee4a9660f800661d286b52d4223110849bee10a0c308f45731541c7
Link zum Herunterladenyorick-mira_0.9.9+dfsg1-2_all.deb
Ausführliche BeschreibungMiRA is an algorithm for image reconstruction from data provided by optical interferometers. It is written in the Yorick language and operated through the Yorick interpreter. . MiRA won the 2008' Interferometric Imaging Beauty Contest organized by International Astronomical Union (IAU) to compare the image synthesis algorithms designed for optical interferometry. In a nutshell, MiRA proceeds by direct minimization of a penalized likelihood. This penalty is the sum of two terms: a likelihood term (typically a χ2) which enforces agreement of the model with the data, plus a regularization term to account for priors. The priors are required to lever the many degeneracies due to the sparseness of the spatial frequency sampling. MiRA implements many different regularizations (quadratic or edge-preserving smoothness, total variation, maximum entropy, etc.) and let the user defines his own priors. The likelihood penalty is modular and designed to account for available data of any kind (complex visibilities, powerspectra and/or closure phase). One of the strength of MiRA is that it is purely based on an inverse problem approach and can therefore cope with incomplete data set; for instance, MiRA can build an image without any Fourier phase information. Input data must be in OI-FITS format.


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