Off-axis digital holographic phase compensation recovery method based on Gaussian filtering

Wenbo Dong; Lei Yu; Jiafa Nie

doi:10.1117/12.3039112

13 September 2024 Off-axis digital holographic phase compensation recovery method based on Gaussian filtering

Wenbo Dong, Lei Yu, Jiafa Nie

Author Affiliations +

Proceedings Volume 13254, Fourth International Conference on Optics and Image Processing (ICOIP 2024); 1325415 (2024) https://doi.org/10.1117/12.3039112
Event: Fourth International Conference on Optics and Image Processing (ICOIP 2024), 2024, Chongqing, China

Abstract

A novel approach utilizing a Gaussian filtering is presented to eliminate aberrations in the phase recovery for off-axis digital holography. After applying the Fourier-transform-based method to the off-axis hologram, a complex amplitude map containing object phase and phase aberrations can be obtained. A Gaussian filter is then employed to extract the phase aberrations map from the complex amplitude map. In this case, the object phase can be reconstructed through a division between the complex amplitude map and the phase aberration map. The proposed method does not require the sample-free hologram containing aberration information and avoids complex procedures such as surface fitting or spectral filtering. Experimental result shows that the proposed method can realize accurate and fast off-axis digital holographic phase compensation recovery.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Wenbo Dong, Lei Yu, and Jiafa Nie "Off-axis digital holographic phase compensation recovery method based on Gaussian filtering", Proc. SPIE 13254, Fourth International Conference on Optics and Image Processing (ICOIP 2024), 1325415 (13 September 2024); https://doi.org/10.1117/12.3039112

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KEYWORDS

Tunable filters

Digital holography

Gaussian filters

Holograms

Optical filters

Phase compensation

Linear filtering

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