Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Resolution and signal-to-noise ratio enhancement for synthetic coded aperture imaging via varying pinhole array

Not Accessible

Your library or personal account may give you access

Abstract

In traditional coded aperture imaging (CAI), the main problem with the deconvolution method is that the noise may dominate the decoding process. Focusing on this problem, a synthetic CAI (s-CAI) method is proposed with a potential to improve the signal-to-noise ratio (SNR) and spatial resolution of CAI. A series of raw coded images are recorded while the pinhole array is varied to different structures, and an iterative decoding algorithm is developed to reconstruct the object image by synthetically using all of these pinhole array structures and corresponding decoded images. Because the proposed iterative decoding algorithm has prominent advantage in noise immunization, and more spatial light components are acquired in comparison with common single-exposure CAI, both the image resolution and SNR are remarkably enhanced.

© 2019 Optical Society of America

Full Article  |  PDF Article
More Like This
Programmable liquid crystal display based noise reduced dynamic synthetic coded aperture imaging camera (NoRDS-CAIC)

Zhilong Jiang, Shuwei Yang, Huachuan Huang, Xiaoliang He, Yan Kong, Aihua Gao, Cheng Liu, Keding Yan, and Shouyu Wang
Opt. Express 28(4) 5221-5238 (2020)

Light intensity and SNR improvement for high-resolution optical imaging via time multiplexed pinhole arrays

Ariel Schwarz, Amir Shemer, and Zeev Zalevsky
Appl. Opt. 53(20) 4483-4492 (2014)

Coded aperture imaging with uniformly redundant arrays

E. E. Fenimore and T. M. Cannon
Appl. Opt. 17(3) 337-347 (1978)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (10)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (12)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved