Scientific Results

A new high compression method for digital holograms recorded in microscope configuration

Year: 2011

Authors: Memmolo P., Paturzo M., Pelagotti A., Finizio A., Ferraro P., Javidi B.

Autors Affiliation: CNR – Istituto Nazionale di Ottica, via Campi Flegrei 34, 80078 Pozzuoli (NA), Italy;
CNR – Istituto Nazionale di Ottica, Largo Fermi 6, 50125 Firenze, Italy;
DIBET, Università degli Studi di Napoli “Federico II”, via Claudio 21, 80125 Napoli, Italy;
Electrical and Computer Engineering Dept., University of Connecticut, U-2157 Storrs, CT 06269-2157, USA

Abstract: We propose a new method to compress digital holograms (DHs) using a sparse matrix representation. Using digital holography to numerically manage complex wavefields, we are able to apply an adaptive mask, based on a threshold filter, to the object wavefield. From there, we store the result of this filtering by sparse representation. We demonstrate that the proposed sparse representation gives us the possibility to obtain high compression factor with minimal loss in the quality of the reconstructed image. This technique is efficient for storage and transmission of DHs and we propose a multiplexing structure for storage the compressed data.


Volume: 8083      Pages from: 80830W  to: 80830W

KeyWords: Digital Holography; Data Compression; Microscopy; Digital Image Processing;
DOI: 10.1117/12.889520

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