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A MATRIX-FREE RECONSTRUCTION METHOD FOR COMPRESSIVE FOCAL PLANE ARRAY IMAGING

Citation Author(s):
Alper Güngör, Oğuzhan Fatih Kar, Emre Güven
Submitted by:
Alper Gungor
Last updated:
5 October 2018 - 7:09am
Document Type:
Poster
Document Year:
2018
Event:
Presenters:
Alper Gungor
Paper Code:
MQ.P4.4 (1992)
Categories:
Keywords:
 

In this study, we propose a novel algorithm for compressive imaging using digital micromirror device (DMD) modulated focal plane array (FPA) data. In this setting, DMD modulates the scene in the image domain by blocking some of the pixels at a higher resolution level. For reconstruction, a regularized optimization problem is solved, whereas reconstruction time is crucial for a practical compressive sensing application. Here, we propose an augmented Lagrangian based method that employs sparsity in both Fourier and gradient spaces, where we apply a separate proximal mapping for each snapshot. We demonstrate the performance of the algorithm via comparison to the state-of-the-art. The proposed method yields higher pSNR at shorter convergence times, especially at higher compression ratios.

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