Compressive coded aperture spectral imaging: An introduction


Journal Article (Review)

Maging spectroscopy involves the sensing of a large amount of spatial information across a multitude of wavelengths. Conventional approaches to hyperspectral sensing scan adjacent zones of the underlying spectral scene and merge the results to construct a spectral data cube. Push broom spectral imaging sensors, for instance, capture a spectral cube with one focal plane array (FPA) measurement per spatial line of the scene [1], [2]. Spectrometers based on optical bandpass filters sequentially scan the scene by tuning the bandpass filters in steps. The disadvantage of these techniques is that they require scanning a number of zones linearly in proportion to the desired spatial and spectral resolution. This article surveys compressive coded aperture spectral imagers, also known as coded aperture snapshot spectral imagers (CASSI) [1], [3], [4], which naturally embody the principles of compressive sensing (CS) [5], [6]. The remarkable advantage of CASSI is that the entire data cube is sensed with just a few FPA measurements and, in some cases, with as little as a single FPA shot. © 1991-2012 IEEE.

Full Text

Duke Authors

Cited Authors

  • Arce, GR; Brady, DJ; Carin, L; Arguello, H; Kittle, DS

Published Date

  • January 1, 2014

Published In

Volume / Issue

  • 31 / 1

Start / End Page

  • 105 - 115

International Standard Serial Number (ISSN)

  • 1053-5888

Digital Object Identifier (DOI)

  • 10.1109/MSP.2013.2278763

Citation Source

  • Scopus