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Speckle suppression method for infrared digital holograms based on sparse object representation and noise diversity
Author(s): V. Bianco; P. Memmolo; A. Finizio; M. Paturzo; P. Ferraro
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Paper Abstract

Digital holograms can be severely degraded by a mixture of speckle and incoherent additive noise. The problem is more severe in the case of IRDH, due to the large speckle grain. In order to suppress the speckles, here we present the MLDH-BM3D, a method specifically suited to filter DH images that combines Multiple DH captures, named Looks, to the BM3D, a numerical filter conceived in order to take advantage from a very sparse representation of the object features. We show that the joint action of ML and BM3D overcomes their respective limitations and achieves quasi noise free DH reconstructions.

Paper Details

Date Published: 7 September 2018
PDF: 6 pages
Proc. SPIE 10834, Speckle 2018: VII International Conference on Speckle Metrology, 1083410 (7 September 2018); doi: 10.1117/12.2319308
Show Author Affiliations
V. Bianco, ISASI-CNR (Italy)
P. Memmolo, ISASI-CNR (Italy)
A. Finizio, ISASI-CNR (Italy)
M. Paturzo, ISASI-CNR (Italy)
P. Ferraro, ISASI-CNR (Italy)


Published in SPIE Proceedings Vol. 10834:
Speckle 2018: VII International Conference on Speckle Metrology
Malgorzata Kujawińska; Leszek R. Jaroszewicz, Editor(s)

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