Mr. Ningyi Leng Profile

Ningyi Leng

at NUDT

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 7 October 2020 Paper

On the ambiguities of phase retrieval problem in Fourier ptychographic microscopy

Ningyi Leng, Ziyang Yuan, Haoxing Yang, Hongxia Wang, Longkun Du

Proceedings Volume 11571, 115710W (2020) https://doi.org/10.1117/12.2580431

KEYWORDS: Phase retrieval, Microscopy, Image processing, Fourier transforms, Signal processing

Read Abstract +

Fourier Ptychographic Microscopy (FPM) has achieved large field of view and high-resolution microscopy, which has attracted widespread attention. However, whether FPM can be restored accurately has not been able to provide a theoretical guarantee. The corresponding measurement system of FPM is the phase retrieval problem of the 2-dimensional inverse short-time Fourier transform (2-D ISTFT). In this paper, aiming at the defect that there are multiple global optimal solutions (ambiguities) for the phase retrieval problem, it is proved that FPM has almost the unique global optimal solution in the sense of removing the global phase solution. Based on different overlap ratios (the ratio of the area of the overlapped part to the window area), the upper bound estimation of the number of the ambiguities is given, and it is proved that FPM can eliminate the conjugate flip solution. In the simulations, the sequential Gerchberg-Saxton method is used to update under different overlap ratio conditions. It is verified that under the condition of low overlap ratio, FPM has poor convergence; under the condition of high overlap ratio, FPM reaches the global optimal solution rapidly.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years