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High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques

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Single-frame far-field diffractive imaging with randomized illumination.

Abraham L Levitan, Kahraman Keskinbora, Umut T Sanli

|December 31, 2020

Summary

This summary is machine-generated.

Randomized probe imaging (RPI) is a new single-frame method for quantitative imaging. It reconstructs amplitude and phase images from diffraction patterns, offering reliable results for X-ray phase imaging applications.

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Area of Science:

Diffractive imaging
Quantitative phase imaging
X-ray microscopy

Background:

Traditional imaging techniques face limitations in quantitative amplitude and phase retrieval.
There is a need for reliable and straightforward imaging methods, especially for extended samples.

Purpose of the Study:

To introduce and validate a novel single-frame diffractive imaging technique, randomized probe imaging (RPI).
To demonstrate the applicability of RPI for quantitative X-ray phase imaging.

Main Methods:

Illuminating a sample with a structured probe field containing sub-feature-sized speckles.
Reconstructing quantitative amplitude and phase images from the far-field diffraction pattern.
Utilizing a complimentary algorithm for robust data analysis and reconstruction.

Main Results:

RPI enables straightforward implementation without near-field optics, suitable for extended samples.
Reconstructions are reliable and robust to missing data when analyzed with the developed algorithm.
Proof-of-concept experiments successfully demonstrated RPI using visible light and soft X-rays.

Conclusions:

Randomized probe imaging (RPI) is an attractive modality for quantitative X-ray phase imaging.
RPI is particularly suitable when temporal resolution and reliability are critical, and nanometer spatial resolution is sufficient.