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Improved 3D localisation of multiple small objects in close-proximity in digital holography

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Hall, Matthew, McCall, Philip J., Towers, Catherine E. and Towers, David P. (2021) Improved 3D localisation of multiple small objects in close-proximity in digital holography. Applied Optics, 60 (4). A285-A295. doi:10.1364/AO.404432 ISSN 0003-6935.

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Official URL: https://doi.org/10.1364/AO.404432

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Abstract

Using intensity gradient based or sparsity based focusmetrics, the ability to accurately localise the 3D position of a small object in a digital holographic reconstruction of a large field of view is hindered in the presence of multiple nearby objects. A more accurate alternative method for 3D localisation, based on evaluation of the complex reconstructed volume, is proposed.Simulations and experimental data demonstrate a reduction in depth positional error for single objects anda notably improved axial resolution of multiple objectsin close proximity.

Item Type: Journal Article
Subjects: Q Science > QC Physics
T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Science, Engineering and Medicine > Engineering > Engineering
Library of Congress Subject Headings (LCSH): Holography -- Data processing, Image processing -- Digital techniques, Three-dimensional imaging
Journal or Publication Title: Applied Optics
Publisher: Optical Society of America
ISSN: 0003-6935
Official Date: 1 February 2021
Dates:
DateEvent
1 February 2021Published
20 October 2020Available
17 October 2020Accepted
Volume: 60
Number: 4
Page Range: A285-A295
DOI: 10.1364/AO.404432
Status: Peer Reviewed
Publication Status: Published
Reuse Statement (publisher, data, author rights): © 2020 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.
Access rights to Published version: Open Access (Creative Commons)
Date of first compliant deposit: 27 October 2020
Date of first compliant Open Access: 8 July 2021
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
EP/N509796/1[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266
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