Single-beam digital holographic reconstruction: a phase-support enhanced complex wavefront on phase-only function for...

Area of Science:

• Optics and Photonics
• Microscopy Techniques
• Digital Imaging

Background:

• In-line digital holographic microscopy (DHM) faces challenges with twin-image artifacts, hindering accurate object reconstruction.
• Eliminating these artifacts is crucial for reliable DHM applications.

Purpose of the Study:

• To introduce a novel digital holographic reconstruction algorithm, phase-support constraint on phase-only function (PCOF).
• To facilitate single-hologram reconstruction, reduce inaccuracies, and avoid iterative processing in DHM.

Main Methods:

• Developed and applied the PCOF algorithm for in-line DHM reconstruction.
• Utilized sliding-window approach in simulations and experiments to compute phase value statistics.
• Employed variance thresholding for a support constraint mask to mitigate twin-image artifacts.

Main Results:

• PCOF effectively suppressed twin-image artifacts.
• Quantitative evaluations demonstrated superior performance over conventional methods (e.g., angular spectrum, iterative phase retrieval).
• Achieved high-fidelity object reconstructions with improved metrics like MSE, PSNR, and SSIM.

Conclusions:

• PCOF presents a robust and promising approach for in-line DHM.
• The algorithm offers an effective solution for mitigating twin-image artifacts.
• PCOF enhances the fidelity of reconstructed objects in DHM.