A new algorithm for digital holograms denoising based on compressed sensing

P. Memmolo; I. Esnaola; A. Finizio; M. Paturzo; P. Ferraro; A. M. Tulino

doi:10.1117/12.922923

4 May 2012 A new algorithm for digital holograms denoising based on compressed sensing

P. Memmolo, I. Esnaola, A. Finizio, M. Paturzo, P. Ferraro, A. M. Tulino

Proceedings Volume 8429, Optical Modelling and Design II; 84291G (2012) https://doi.org/10.1117/12.922923
Event: SPIE Photonics Europe, 2012, Brussels, Belgium

Abstract

We propose a new denoising algorithm in off-axis Digital Holography (DH) based on l1 norm minimization. The aim of our work is to assess a general denoising scheme of digital holograms, i.e. we do not explore prior knowledge of the statistics of the digital holograms. For this purpose, we consider different experimental conditions such as a digital holograms recorded in microscope configuration and lensless configuration. We use the inherent sparsity of the numerical reconstruction of digital holograms in order to optimize the in-focus digital reconstructions. For this reason, we call the proposed algorithm SPADEDH (SPArsity DEnoising of Digital Holograms). We perform also a display test, by using a Spatial Light Modulator (SLM) as a projection system, for the digital holograms recorded in lensless configuration. In both numerical reconstruction and display test, the improvements of the SPADEDH algorithm are computed.

Citation Download Citation

P. Memmolo, I. Esnaola, A. Finizio, M. Paturzo, P. Ferraro, and A. M. Tulino "A new algorithm for digital holograms denoising based on compressed sensing", Proc. SPIE 8429, Optical Modelling and Design II, 84291G (4 May 2012); https://doi.org/10.1117/12.922923

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