Projekter pr. år
Abstract
The use of compressed sensing in atomic force microscopy (AFM) can potentially speed-up image acquisition, lower probe-specimen interaction, or enable super resolution imaging. The idea in compressed sensing for AFM is to spatially undersample the specimen, i.e. only acquire a small fraction of the full image of it, and then use advanced computational techniques to reconstruct the remaining part of the image whenever this is possible. Our initial experiments have shown that it is possible to leverage inherent structure in acquired AFM images to improve image reconstruction. Thus, we have studied structure in the discrete cosine transform coefficients of typical AFM images. Based on this study, we propose a generic support structure model that may be used to improve the quality of the reconstructed AFM images. Furthermore, we propose a modification to the established iterative thresholding reconstruction algorithms that enables the use of our proposed structure model in the reconstruction process. Through a large set of reconstructions, the general reconstruction capability improvement achievable using our structured model is shown both quantitatively and qualitatively. Specifically, our experiments show that our proposed algorithm improves over established iterative thresholding algorithms by being able to reconstruct AFM images to a comparable quality using fewer measurements or equivalently obtaining a more detailed reconstruction for a fixed number of measurements.
Bidragets oversatte titel | Struktur-assisteret compressed sensing rekonstruktion af under-samplede AFM-billeder |
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Originalsprog | Engelsk |
Tidsskrift | Ultramicroscopy |
Vol/bind | 172 |
Sider (fra-til) | 1-9 |
ISSN | 0304-3991 |
DOI | |
Status | Udgivet - jan. 2017 |
Fingeraftryk
Dyk ned i forskningsemnerne om 'Struktur-assisteret compressed sensing rekonstruktion af under-samplede AFM-billeder'. Sammen danner de et unikt fingeraftryk.Projekter
- 1 Afsluttet
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FastAFM: Enabling Fast Image Acquisition for Atomic Force Microscopy using Compressed Sensing
Larsen, T., Østergaard, J., Jensen, T., Arildsen, T., Oxvig, C. S. & Pedersen, P. S.
01/09/2013 → 31/08/2016
Projekter: Projekt › Forskning
Aktiviteter
- 1 Gæsteophold ved andre institutioner
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University of Cambridge
Thomas Arildsen (Gæsteforsker)
20 sep. 2016 → 22 sep. 2016Aktivitet: Gæsteophold ved andre institutioner
Forskningsdatasæt
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w-IST/w-IHT Figures
Oxvig, C. S. (Ophavsperson), Arildsen, T. (Ophavsperson) & Larsen, T. (Ophavsperson), VBN, 2016
DOI: 10.5278/vbn/projects/wISTwIHT, http://dx.doi.org/10.5281/zenodo.17573 Og 2 flere links, http://dx.doi.org/10.5281/zenodo.60434, http://dx.doi.org/10.5281/zenodo.60512 (vis færre)
Datasæt
Fil