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Moon, Sunghwan
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Compressed sensing and sparsity in photoacoustic tomography

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dc.contributor.author Haltmeier, M ko
dc.contributor.author Berer, Thomas ko
dc.contributor.author Moon, Sunghwan ko
dc.contributor.author Burgholzer, P ko
dc.date.available 2016-11-11T09:11:37Z -
dc.date.created 2016-11-11 ko
dc.date.issued 2016-11 ko
dc.identifier.citation JOURNAL OF OPTICS, v.18, no.11, pp.114004 ko
dc.identifier.issn 2040-8978 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/20697 -
dc.description.abstract Increasing the imaging speed is a central aim in photoacoustic tomography. This issue is especially important in the case of sequential scanning approaches as applied for most existing optical detection schemes. In this work we address this issue using techniques of compressed sensing. We demonstrate, that the number of measurements can significantly be reduced by allowing general linear measurements instead of point-wise pressure values. A main requirement in compressed sensing is the sparsity of the unknowns to be recovered. For that purpose, we develop the concept of sparsifying temporal transforms for three-dimensional photoacoustic tomography. We establish a two-stage algorithm that recovers the complete pressure signals in a first step and then apply a standard reconstruction algorithm such as back-projection. This yields a novel reconstruction method with much lower complexity than existing compressed sensing approaches for photoacoustic tomography. Reconstruction results for simulated and for experimental data verify that the proposed compressed sensing scheme allows for reducing the number of spatial measurements without reducing the spatial resolution. ko
dc.description.statementofresponsibility open -
dc.language 영어 ko
dc.publisher IOP PUBLISHING LTD ko
dc.title Compressed sensing and sparsity in photoacoustic tomography ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-84992730335 ko
dc.identifier.wosid 000386898600001 ko
dc.type.rims ART ko
dc.identifier.doi 10.1088/2040-8978/18/11/114004 ko
dc.identifier.url http://iopscience.iop.org/article/10.1088/2040-8978/18/11/114004/meta ko
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