Time-coded aperture for x-ray imaging
(2019) In Optics Letters 44(11). p.2803-2806- Abstract
We describe a computational imaging system for x-ray tomography, where image capture and post-processing are co-designed to improve final image quality when relative motion of an experiment’s components during a single exposure causes motion blur. The idea is based on temporally encoding the motion during each exposure by fluttering the detector shutter open and closed with a known sequence for guaranteeing an invertible motion blur kernel. While generally applicable, we demonstrate our approach by simulating blurry data acquisition for transmission x-ray tomography and deblurring the reconstructed images. The results suggest that optimized pseudo-random binary time-coded apertures can yield successful reconstructions independent of the... (More)
We describe a computational imaging system for x-ray tomography, where image capture and post-processing are co-designed to improve final image quality when relative motion of an experiment’s components during a single exposure causes motion blur. The idea is based on temporally encoding the motion during each exposure by fluttering the detector shutter open and closed with a known sequence for guaranteeing an invertible motion blur kernel. While generally applicable, we demonstrate our approach by simulating blurry data acquisition for transmission x-ray tomography and deblurring the reconstructed images. The results suggest that optimized pseudo-random binary time-coded apertures can yield successful reconstructions independent of the size of the blur kernel. This Letter is especially relevant to high-speed x-ray tomography applications where time-resolution is limited by the detector or available photon flux.
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- author
- Ching, Daniel ; Aslan, Selin ; Nikitin, Viktor LU and Gürsoy, Dog A.
- organization
- publishing date
- 2019
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Optics Letters
- volume
- 44
- issue
- 11
- pages
- 4 pages
- publisher
- Optical Society of America
- external identifiers
-
- scopus:85066439315
- ISSN
- 0146-9592
- DOI
- 10.1364/OL.44.002803
- language
- English
- LU publication?
- yes
- id
- 0b913e1d-92be-4d32-b6e0-4964c088ae64
- date added to LUP
- 2019-07-04 10:34:34
- date last changed
- 2022-04-10 19:43:50
@article{0b913e1d-92be-4d32-b6e0-4964c088ae64,
abstract = {{<p>We describe a computational imaging system for x-ray tomography, where image capture and post-processing are co-designed to improve final image quality when relative motion of an experiment’s components during a single exposure causes motion blur. The idea is based on temporally encoding the motion during each exposure by fluttering the detector shutter open and closed with a known sequence for guaranteeing an invertible motion blur kernel. While generally applicable, we demonstrate our approach by simulating blurry data acquisition for transmission x-ray tomography and deblurring the reconstructed images. The results suggest that optimized pseudo-random binary time-coded apertures can yield successful reconstructions independent of the size of the blur kernel. This Letter is especially relevant to high-speed x-ray tomography applications where time-resolution is limited by the detector or available photon flux.</p>}},
author = {{Ching, Daniel and Aslan, Selin and Nikitin, Viktor and Gürsoy, Dog A.}},
issn = {{0146-9592}},
language = {{eng}},
number = {{11}},
pages = {{2803--2806}},
publisher = {{Optical Society of America}},
series = {{Optics Letters}},
title = {{Time-coded aperture for x-ray imaging}},
url = {{http://dx.doi.org/10.1364/OL.44.002803}},
doi = {{10.1364/OL.44.002803}},
volume = {{44}},
year = {{2019}},
}