SPADEDH: a sparsity-based denoising method of digital holograms without knowing the noise statistics
Anno: 2012
Autori: Memmolo P., Esnaola I., Finizio A., Paturzo M., Ferraro P., Tulino A.M.
Affiliazione autori: CNR – Istituto Nazionale di Ottica, via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy;
DIBET, Università degli Studi di Napoli ”Federico II”, via Claudio 21, Napoli, Italy;
Wireless Communication Theory Research, Bell Laboratories, 791 Holmdel-Keyport Road, Holmdel, New Jersey 07733, USA
Abstract: In this paper we propose a robust method to suppress the noise components in digital holography (DH), called SPADEDH (SPArsity DEnoising of Digital Holograms), that does not consider any prior knowledge or estimation about the statistics of the noise. In the full digital holographic process we must mainly deal with two kinds of noise. The first one is an additive uncorrelated noise that corrupts the observed irradiance, the other one is the multiplicative phase noise called speckle noise. We consider both lensless and microscope configurations and we prove that the proposed algorithm works efficiently in all considered cases suppressing the aforementioned noise components. In addition, for digital holograms recorded in lensless configuration, we show the improvement in a display test by using a Spatial Light Modulator (SLM). (C) 2012 Optical Society of America
Giornale/Rivista: OPTICS EXPRESS
Volume: 20 (15) Da Pagina: 17250 A: 17257
Parole chiavi: Digital holography; Image reconstruction techniques; Fourier optics and signal processingDOI: 10.1364/OE.20.017250Citazioni: 48dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-04-21Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui