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Digital hologram reconstruction algorithm based on the fractional Fourier transform in non-telecentric digital holographic microscopy

Harshal Chaudhari, Rishikesh Kulkarni, Pradeep Kumar Sundaravadivelu, Rajkumar P. Thummer, and M. K. Bhuyan

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Abstract

A hologram reconstruction algorithm is proposed based on the fractional Fourier transform (FRFT) in non-telecentric digital holographic microscopy. The optimal fractional order representing the recorded hologram is estimated based on an evaluation metric. The FRFT-based hologram reconstruction enables noise robust amplitude and phase imaging with enhanced resolution. The effectiveness of the proposed approach is demonstrated in practical scenarios through both simulation and experimental results.

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Corrections

20 January 2024: A typographical correction was made to the article title.

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