Improving the signal-to-noise ratio of single-pixel imaging using digital microscanning

Sun, M., Edgar, M. P., Phillips, D. B., Gibson, G. M. and Padgett, M. J. (2016) Improving the signal-to-noise ratio of single-pixel imaging using digital microscanning. Optics Express, 24(10), 10476. (doi: 10.1364/OE.24.010476)

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Single-pixel cameras provide a means to perform imaging at wavelengths where pixelated detector arrays are expensive or limited. The image is reconstructed from measurements of the correlation between the scene and a series of masks. Although there has been much research in the field in recent years, the fact that the signal-to-noise ratio (SNR) scales poorly with increasing resolution has been one of the main limitations prohibiting the uptake of such systems. Microscanning is a technique that provides a final higher resolution image by combining multiple images of a lower resolution. Each of these low resolution images is subject to a sub-pixel sized lateral displacement. In this work we apply a digital microscanning approach to an infrared single-pixel camera. Our approach requires no additional hardware, but is achieved simply by using a modified set of masks. Compared to the conventional Hadamard based single-pixel imaging scheme, our proposed framework improves the SNR of reconstructed images by ∼ 50 % for the same acquisition time. In addition, this strategy also provides access to a stream of low-resolution ‘preview’ images throughout each high-resolution acquisition.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Gibson, Dr Graham and Edgar, Dr Matthew and Phillips, Dr David and Sun, Dr Mingjie and Padgett, Professor Miles
Authors: Sun, M., Edgar, M. P., Phillips, D. B., Gibson, G. M., and Padgett, M. J.
College/School:College of Science and Engineering > School of Engineering > Biomedical Engineering
College of Science and Engineering > School of Physics and Astronomy
Journal Name:Optics Express
Publisher:OSA Publishing
ISSN (Online):1094-4087
Published Online:04 May 2016
Copyright Holders:Copyright © 2016 OSA
First Published:First published in Optics Express 24(10):10476:
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher
Data DOI:10.5525/gla.researchdata.308

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
6672319UK Quantum Technology Hub in Enhanced Quantum ImagingMiles PadgettEngineering & Physical Sciences Research Council (EPSRC)EP/M01326X/1S&E P&A - PHYSICS & ASTRONOMY