Open AccessNumerical iterative approach for zero-order term elimination in off-axis digital holography
Author(s) -
Zhixin Ma,
Lijun Deng,
Yong Yang,
Hongchen Zhai,
Qi Ge
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.028314
Subject(s) - digital holography , holography , robustness (evolution) , computer science , optics , noise reduction , digital holographic microscopy , algorithm , digital filter , spatial filter , iterative method , filter (signal processing) , computer vision , artificial intelligence , physics , biochemistry , chemistry , gene
A novel numerical iterative approach is proposed to effectively eliminate the zero-order term and to improve the signal-to-noise ratio of the reconstructed image in off-axis digital holography. The iterations are conducted in the spatial domain, resulting in considerable reduction in the computational time and avoiding the subjectivity involved in selecting a filter window in spectral domain. These advantages promote the application of this approach in real-time detection processes. The feasibility of this approach is confirmed by mathematical deductions and numerical simulations, and the robustness of the proposed approach is tested by means of an experimentally obtained hologram.