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Wavefront reconstruction in digital off-axis holography via sparse coding of amplitude and absolute phase

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Details

Original languageEnglish
Pages (from-to)2417-2420
Number of pages4
JournalOptics Letters
Volume40
Issue number10
DOIs
Publication statusPublished - 15 May 2015
Publication typeA1 Journal article-refereed

Abstract

This work presents the new method for wavefront reconstruction from a digital hologram recorded in off-axis configuration. The main feature of the proposed algorithm is a good ability for noise filtration due to the original formulation of the problem taking into account the presence of noise in the recorded intensity distribution and the sparse phase and amplitude reconstruction approach with the data-adaptive block-matching 3D technique. Basically, the sparsity assumes that low dimensional models can be used for phase and amplitude approximations. This low dimensionality enables strong suppression of noisy components and accurate revealing of the main features of the signals of interest. The principal point is that dictionaries of these sparse models are not known in advance and reconstructed from given noisy observations in a multiobjective optimization procedure. We show experimental results demonstrating the effectiveness of our approach. (C) 2015 Optical Society of America

Keywords

  • COMPRESSIVE HOLOGRAPHY, RETRIEVAL, ACCURACY, SPADEDH, MAPS

Publication forum classification

Field of science, Statistics Finland