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. © 2012 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).
A new algorithm for digital holograms denoising based on compressed sensing / Memmolo, P.; Esnaola, I.; Finizio, A.; Paturzo, M.; Ferraro, P.; Tulino, A. M.. - 8429:(2012), p. 84291G. (Intervento presentato al convegno Optical Modelling and Design II tenutosi a Brussels, bel nel 2012) [10.1117/12.922923].
A new algorithm for digital holograms denoising based on compressed sensing
Memmolo P.;Paturzo M.;Ferraro P.;Tulino A. M.
2012
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. © 2012 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
