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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 36 — Dec. 20, 2010
  • pp: 6824–6833

Multiframe image estimation for coded aperture snapshot spectral imagers

David Kittle, Kerkil Choi, Ashwin Wagadarikar, and David J. Brady  »View Author Affiliations


Applied Optics, Vol. 49, Issue 36, pp. 6824-6833 (2010)
http://dx.doi.org/10.1364/AO.49.006824


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Abstract

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.

© 2010 Optical Society of America

OCIS Codes
(110.4190) Imaging systems : Multiple imaging
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(110.4155) Imaging systems : Multiframe image processing
(110.4234) Imaging systems : Multispectral and hyperspectral imaging

ToC Category:
Imaging Systems

History
Original Manuscript: August 3, 2010
Revised Manuscript: October 22, 2010
Manuscript Accepted: October 30, 2010
Published: December 13, 2010

Citation
David Kittle, Kerkil Choi, Ashwin Wagadarikar, and David J. Brady, "Multiframe image estimation for coded aperture snapshot spectral imagers," Appl. Opt. 49, 6824-6833 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-36-6824

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