Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: PAINTER: a spatio-spectral image reconstruction algorithm for optical
  interferometry   Astronomical optical interferometers sample the Fourier transform of the
intensity distribution of a source at the observation wavelength. Because of
rapid perturbations caused by atmospheric turbulence, the phases of the complex
Fourier samples (visibilities) cannot be directly exploited. Consequently,
specific image reconstruction methods have been devised in the last few
decades. Modern polychromatic optical interferometric instruments are now
paving the way to multiwavelength imaging. This paper is devoted to the
derivation of a spatio-spectral (3D) image reconstruction algorithm, coined
PAINTER (Polychromatic opticAl INTErferometric Reconstruction software). The
algorithm relies on an iterative process, which alternates estimation of
polychromatic images and of complex visibilities. The complex visibilities are
not only estimated from squared moduli and closure phases, but also
differential phases, which helps to better constrain the polychromatic
reconstruction. Simulations on synthetic data illustrate the efficiency of the
algorithm and in particular the relevance of injecting a differential phases
model in the reconstruction.

10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
2
The categories of this paper are: math
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
3
The categories of this paper are: physics
16
The categories of this paper are: stat
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
4
The categories of this paper are: cond-mat
27
The categories of this paper are: comp-gas
37
The categories of this paper are: supr-con
35
The categories of this paper are: mtrl-th
18
The categories of this paper are: econ