Effect of different sparsity priors on compressive photon-sieve spectral imaging

Date

2018-05-02

Author

Kar, Oguzhan Fatih
Öktem, Sevinç Figen
Kamaci, Ulas
Akyon, Fatih Cagatay

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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Compressive spectral imaging is a rapidly growing area yielding higher performance novel spectral imagers than conventional ones. Inspired by compressed sensing theory, compressive spectral imagers aim to reconstruct the spectral images from compressive measurements using sparse signal recovery algorithms. In this paper, first, the image formation model and a sparsity-based reconstruction approach are presented for compressive photon-sieve spectral imager. Then the reconstruction performance of the approach is analyzed using different sparsity priors. In the system, a coded aperture is used for modulation and a photon-sieve for dispersion. In the measurements, coded and blurred images of spectral bands are superimposed. Simulation results show promising image reconstruction performance from these compressive measurements.

Subject Keywords

Spectral imaging, Compressed sensing, Inverse problems, Computational imaging, Sparsity prior

URI

https://hdl.handle.net/11511/46593

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Department of Electrical and Electronics Engineering, Conference / Seminar