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Remote referencing strategy for high-resolution coded ptychographic imaging.

Tianbo Wang, Pengming Song, Shaowei Jiang

|January 13, 2023

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This summary is machine-generated.

Coded ptychography (CP) enhances optical imaging resolution and speed. A new remote referencing method enables accurate motion tracking for blind image acquisition, improving throughput for applications like bio-specimen imaging.

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Area of Science:

Optics and Photonics
Microscopy and Imaging
Computational Imaging

Background:

Conventional ptychography faces limitations in resolution and throughput for visible light imaging.
Coded ptychography (CP) offers a lensless solution for high numerical aperture, large-area optical imaging.
Accurate sensor positional tracking is critical for high-quality CP reconstruction, but the coded layer hinders traditional methods.

Purpose of the Study:

To develop and analyze a motion tracking model for coded ptychography.
To introduce a novel remote referencing scheme for blind image acquisition in CP.
To enable computationally efficient and robust positional refinement for high-throughput ptychography.

Main Methods:

Derivation and analysis of the coded ptychography motion tracking model.
Development of a remote referencing scheme and refinement pipeline for blind image acquisition.
Suppression of correlation peaks from the coded surface to achieve deep sub-pixel accuracy in positional recovery.

Main Results:

A novel, computationally efficient method for tracking sensor positional shifts in CP was developed.
The method allows for blind image acquisition, independent of iterative phase retrieval and motion feedback.
Deep sub-pixel accuracy in positional recovery was achieved, overcoming limitations of the coded sensor layer.

Conclusions:

The developed remote referencing scheme provides a robust solution for high-throughput ptychography.
This approach significantly enhances the reliability and efficiency of coded ptychography systems.
Validated by high-resolution whole slide imaging of bio-specimens, demonstrating practical applicability.