Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Snapshot fiber spectral imaging using speckle correlations and
  compressive sensing   Snapshot spectral imaging is rapidly gaining interest for remote sensing
applications. Acquiring spatial and spectral data within one image promotes
fast measurement times, and reduces the need for stabilized scanning imaging
systems. Many current snapshot technologies, which rely on gratings or prisms
to characterize wavelength information, are difficult to reduce in size for
portable hyperspectral imaging. Here, we show that a multicore multimode fiber
can be used as a compact spectral imager with sub-nanometer resolution, by
encoding spectral information within a monochrome CMOS camera. We characterize
wavelength-dependent speckle patterns for up to 3000 fiber cores over a broad
wavelength range. A clustering algorithm is employed in combination with
l$_{1}$-minimization to limit data collection at the acquisition stage for the
reconstruction of spectral images that are sparse in the wavelength domain. We
also show that in the non-compressive regime these techniques are able to
accurately reconstruct broadband information.

37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
6
The categories of this paper are: astro-ph
21
The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
11
The categories of this paper are: hep-lat
34
The categories of this paper are: chem-ph
1
The categories of this paper are: cs
12
The categories of this paper are: nucl-th