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Updated: Apr 17, 2026

Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform

Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform

Published on: February 12, 2014

Partially coherent phase imaging with simultaneous source recovery.

Zhong Jingshan¹, Lei Tian², Justin Dauwels³

¹Electrical and Electronic Engineering, Nanyang Technological University, 639798, Singapore ; Department of Electrical Engineering and Computer Sciences, University of California, Berkeley USA.

Biomedical Optics Express

|February 7, 2015

Summary

This summary is machine-generated.

We developed a new phase retrieval method using partially coherent light from any source shape. This technique accurately reconstructs sample phase and amplitude while estimating illumination coherence, applicable across various imaging systems.

Keywords:

(100.5070) Phase retrieval (110.3010) Image reconstruction techniques

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Area of Science:

Coherent imaging
Phase contrast microscopy
Image reconstruction

Background:

Phase retrieval is crucial for imaging systems using partially coherent light.
Existing methods often struggle with arbitrary source shapes and unknown illumination coherence.
Köhler geometry is widely used for controlling illumination in microscopy.

Purpose of the Study:

To develop a novel phase retrieval method for partially coherent illumination from arbitrary source shapes.
To simultaneously recover sample phase/amplitude and estimate illumination spatial coherence.
To provide a robust, fast, and experimentally simple solution for phase imaging.

Main Methods:

Utilizing a stack of defocused intensity images.
Employing a Kalman filtering approach for phase retrieval and source shape estimation.
Implementing the method in Köhler geometry with arbitrary source shapes.

Main Results:

Successful simultaneous recovery of sample phase and amplitude.
Accurate estimation of the unknown source shape, characterizing illumination coherence.
Demonstrated robustness to noise and experimental flexibility.

Conclusions:

The proposed method offers a versatile and efficient solution for phase retrieval in partially coherent imaging.
Applicable to optical, electron, and X-ray microscopy, enhancing imaging capabilities.
Experimental validation in an optical microscope confirms the method's practical utility.