Study on pre-filtering requirements of Hilbert transform method for optical phase retrieval

Bagath Chandraprasad T.; Pramitha Vayalamkuzhi; Shanti Bhattacharya

doi:10.1117/12.2649905

16 March 2023 Study on pre-filtering requirements of Hilbert transform method for optical phase retrieval

Bagath Chandraprasad T., Pramitha Vayalamkuzhi, Shanti Bhattacharya

Proceedings Volume 12389, Quantitative Phase Imaging IX; 123890J (2023) https://doi.org/10.1117/12.2649905
Event: SPIE BiOS, 2023, San Francisco, California, United States

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Abstract

The Hilbert transform (HT) method is a technique to perform optical phase retrieval from a single off-axis interference pattern. However, one of the significant issues with the HT method is the error generated due to noise in the recorded interference pattern, which can be avoided using a proper pre-filtering step. The importance of pre-filtering of the interference patterns is studied in this study. The observations are verified experimentally by performing quantitative phase imaging of a white blood cell (WBC) using a Mach-Zehnder interferometer configuration.

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Bagath Chandraprasad T., Pramitha Vayalamkuzhi, and Shanti Bhattacharya "Study on pre-filtering requirements of Hilbert transform method for optical phase retrieval", Proc. SPIE 12389, Quantitative Phase Imaging IX, 123890J (16 March 2023); https://doi.org/10.1117/12.2649905

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