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arXiv · 1509.02427

Approximate Message Passing in Coded Aperture Snapshot Spectral Imaging

Jin Tan·Yanting Ma·Hoover Rueda·Dror Baron·Gonzalo Arce
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Abstract

We consider a compressive hyperspectral imaging reconstruction problem, where three-dimensional spatio-spectral information about a scene is sensed by a coded aperture snapshot spectral imager (CASSI). The approximate message passing (AMP) framework is utilized to reconstruct hyperspectral images from CASSI measurements, and an adaptive Wiener filter is employed as a three-dimensional image denoiser within AMP. We call our algorithm "AMP-3D-Wiener." The simulation results show that AMP-3D-Wiener outperforms existing widely-used algorithms such as gradient projection for sparse reconstruction (GPSR) and two-step iterative shrinkage/thresholding (TwIST) given the same amount of runtime. Moreover, in contrast to GPSR and TwIST, AMP-3D-Wiener need not tune any parameters, which simplifies the reconstruction process.

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Jin Tan, Yanting Ma, Hoover Rueda, Dror Baron, Gonzalo Arce. 2015-09-08. Approximate Message Passing in Coded Aperture Snapshot Spectral Imaging. https://arxiv.org/abs/1509.02427

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