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Proceedings Paper

Development of a DMD-based compressive sampling hyperspectral imaging (CS-HSI) system
Author(s): Yuehao Wu; Iftekhar O. Mirza; Peng Ye; Gonzalo R. Arce; Dennis W. Prather
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Paper Abstract

We report the development of a Digital-Micromirror-Device (DMD)-based Compressive Sampling Hyperspectral Imaging (CS-HSI) system. A DMD is used to implement CS measurement patterns, which modulate the intensity of optical images. The 3-dimensional (3-D) spatial/spectral data-cube of the original optical image is reconstructed from the CS measurements by solving a minimization problem. Two different solvers for the minimization problem were examined, including the GPSR (Gradient Projection for Sparse Reconstruction) and the TwIST (Two-step Iterative Shrinkage/Thresholding) methods. The performances of these two methods were tested and compared in terms of the image-reconstruction quality and the computer run-time. The image-formation process of the DMD-based spectral imaging system was analyzed using a Zemax model, based on which, an experimental prototype was built. We also present experimental results obtained from the prototype system.

Paper Details

Date Published: 11 February 2011
PDF: 12 pages
Proc. SPIE 7932, Emerging Digital Micromirror Device Based Systems and Applications III, 79320I (11 February 2011); doi: 10.1117/12.874069
Show Author Affiliations
Yuehao Wu, Univ. of Delaware (United States)
Iftekhar O. Mirza, Univ. of Delaware (United States)
Peng Ye, Univ. of Maryland, College Park (United States)
Gonzalo R. Arce, Univ. of Delaware (United States)
Dennis W. Prather, Univ. of Delaware (United States)

Published in SPIE Proceedings Vol. 7932:
Emerging Digital Micromirror Device Based Systems and Applications III
Michael R. Douglass; Patrick I. Oden, Editor(s)

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