Multiframe image estimation for coded aperture snapshot spectral imagers.

Published

Journal Article

A coded aperture snapshot spectral imager (CASSI) estimates the three-dimensional spatiospectral data cube from a snapshot two-dimensional coded projection, assuming that the scene is spatially and spectrally sparse. For less spectrally sparse scenes, we show that the use of multiple nondegenerate snapshots can make data cube recovery less ill-posed, yielding improved spatial and spectral reconstruction fidelity. Additionally, data acquisition can be easily scaled to meet the time/resolution requirements of the scene with little modification or extension of the original CASSI hardware. A multiframe reconstruction of a 640 × 480 × 53 voxel datacube with 450-650 nm white-light illumination of a scene reveals substantial improvement in the reconstruction fidelity, with limited increase in acquisition and reconstruction time.

Full Text

Duke Authors

Cited Authors

  • Kittle, D; Choi, K; Wagadarikar, A; Brady, DJ

Published Date

  • December 2010

Published In

Volume / Issue

  • 49 / 36

Start / End Page

  • 6824 - 6833

PubMed ID

  • 21173812

Pubmed Central ID

  • 21173812

Electronic International Standard Serial Number (EISSN)

  • 1539-4522

International Standard Serial Number (ISSN)

  • 1559-128X

Digital Object Identifier (DOI)

  • 10.1364/ao.49.006824

Language

  • eng