Sparsity-Based Pixel Super Resolution for Lens-Free Digital In-line Holography
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Sparsity-Based Pixel Super Resolution for Lens-Free Digital In-line Holography
| Title: | Sparsity-Based Pixel Super Resolution for Lens-Free Digital In-line Holography |
| Author: |
Song, Jun; Leon Swisher, Christine; Im, Hyungsoon; Jeong, Sangmoo; Pathania, Divya; Iwamoto, Yoshiko; Pivovarov, Misha; Weissleder, Ralph; Lee, Hakho
Note: Order does not necessarily reflect citation order of authors. |
| Citation: | Song, Jun, Christine Leon Swisher, Hyungsoon Im, Sangmoo Jeong, Divya Pathania, Yoshiko Iwamoto, Misha Pivovarov, Ralph Weissleder, and Hakho Lee. 2016. “Sparsity-Based Pixel Super Resolution for Lens-Free Digital In-line Holography.” Scientific Reports 6 (1): 24681. doi:10.1038/srep24681. http://dx.doi.org/10.1038/srep24681. |
| Full Text & Related Files: |
4838824.pdf (1.426Mb; PDF) 
|
| Abstract: | Lens-free digital in-line holography (LDIH) is a promising technology for portable, wide field-of-view imaging. Its resolution, however, is limited by the inherent pixel size of an imaging device. Here we present a new computational approach to achieve sub-pixel resolution for LDIH. The developed method is a sparsity-based reconstruction with the capability to handle the non-linear nature of LDIH. We systematically characterized the algorithm through simulation and LDIH imaging studies. The method achieved the spatial resolution down to one-third of the pixel size, while requiring only single-frame imaging without any hardware modifications. This new approach can be used as a general framework to enhance the resolution in nonlinear holographic systems. |
| Published Version: | doi:10.1038/srep24681 |
| Other Sources: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4838824/pdf/ |
| Terms of Use: | This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA |
| Citable link to this page: | http://nrs.harvard.edu/urn-3:HUL.InstRepos:26860111 |
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