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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Abstract
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 |
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Status: | Published |
Refereed: | Yes |
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: | 1094-4087 |
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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