Depth-based defocus elimination for macroscopic Fourier ptychography imaging

Jiating An; Lingbao Kong

doi:10.1117/12.3009043

29 December 2023 Depth-based defocus elimination for macroscopic Fourier ptychography imaging

Jiating An, Lingbao Kong

Proceedings Volume 12976, Eighth Asia Pacific Conference on Optics Manufacture and Third International Forum of Young Scientists on Advanced Optical Manufacturing (APCOM and YSAOM 2023); 1297612 (2023) https://doi.org/10.1117/12.3009043
Event: 8th Asia Pacific Conference on Optics Manufacture & 3rd International Forum of Young Scientists on Advanced Optical Manufacturing, 2023, Shenzhen, China

Abstract

To achieve high-resolution intensity images, Fourier ptychography (FP) has been used in microscopic for decades, and is suitable for macroscopic area. Aberration is important for the quality of reconstruction during aperture scanning and phase recovery in the FP process. In the field of macroscopic imaging, due to the defocus in the 3D scene, cameras can only capture blurry images by direct photography. To overcome the limitation, we design an FP iteration method with the depth of defocus to improve the recovery for the high-resolution images. The initial scene comprises two layers of data: the intensity information and the depth map. The spectral distribution and optical transfer function are acquired via Fourier transform. This is followed by an iterative process of reconstruction: a low-resolution image is taken at each aperture, combined with depth-induced defocus aberrations, and then substituted into optical transfer function calculations to simulate intensity measurements from camera sensing. Each scan corresponds to a specific area with limited bandwidth in Fourier space, and multiple iterations are used for phase recovery to reconstruct a high-resolution image. Compared to the traditional method, the defocus elimination FP algorithm for macroscopic imaging enhances the resolution and contrast of the reconstruction, enabling a wider range of measurable scenarios.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Jiating An and Lingbao Kong "Depth-based defocus elimination for macroscopic Fourier ptychography imaging", Proc. SPIE 12976, Eighth Asia Pacific Conference on Optics Manufacture and Third International Forum of Young Scientists on Advanced Optical Manufacturing (APCOM and YSAOM 2023), 1297612 (29 December 2023); https://doi.org/10.1117/12.3009043

ACCESS THE FULL ARTICLE

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: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Image restoration

Image resolution

Imaging systems

Optical transfer functions

Cameras

Image processing

Reconstruction algorithms

Show All Keywords

Keywords/Phrases

Search In:

Publication Years