Iterative approach for zero-order term elimination in off-axis multiplex digital holography
| Autor: | Zhao Dongliang, Xie Dongzhuo, Yong Yang, Hongchen Zhai |
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| Rok vydání: | 2017 |
| Předmět: |
Computer science
Holography Physics::Optics 02 engineering and technology 01 natural sciences Multiplexing law.invention 010309 optics Optics Robustness (computer science) law 0103 physical sciences Digital image processing Multiplex Electrical and Electronic Engineering Physical and Theoretical Chemistry ComputingMethodologies_COMPUTERGRAPHICS Zero order business.industry Filter (signal processing) 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Frequency domain 0210 nano-technology business Digital holography |
| Zdroj: | Optics Communications. 383:513-517 |
| ISSN: | 0030-4018 |
| DOI: | 10.1016/j.optcom.2016.09.049 |
| Popis: | An iterative approach is proposed to eliminate the zero-order term from an off-axis multiplexed hologram that contains several sub-holograms. The zero-order components of each sub-hologram are effectively eliminated one by one using the proposed iterative procedure. Because of the reduction of the zero-order components in the frequency domain, enlarged filtering windows can be used to separate each of the +1 order components and improve the signal-to-noise ratio. The proposed method does not require prior knowledge of the object images, and only needs each of the reference wave intensities, which can be acquired before acquisition of the multiplexed hologram. The feasibility of the proposed approach is confirmed through mathematical deductions and numerical simulations, and the robustness of the proposed approach is verified using a practical multiplexed hologram. |
| Databáze: | OpenAIRE |
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