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Extraction of digital wavefront sets using applied harmonic analysis and deep neural networks
KTH, Skolan för teknikvetenskap (SCI), Matematik (Inst.).ORCID-id: 0000-0002-1118-6483
2019 (engelsk)Inngår i: SIAM Journal on Imaging Sciences, E-ISSN 1936-4954, Vol. 12, nr 4, s. 1936-1966Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Microlocal analysis provides deep insight into singularity structures and is often crucial for solving inverse problems, predominately, in imaging sciences. Of particular importance is the analysis of wavefront sets and the correct extraction of those. In this paper, we introduce the first algorithmic approach to extract the wavefront set of images, which combines data-based and model-based methods. Based on a celebrated property of the shearlet transform to unravel information on the wavefront set, we extract the wavefront set of an image by first applying a discrete shearlet transform and then feeding local patches of this transform to a deep convolutional neural network trained on labeled data. The resulting algorithm outperforms all competing algorithms in edge-orientation and ramp-orientation detection.

sted, utgiver, år, opplag, sider
Society for Industrial & Applied Mathematics (SIAM) , 2019. Vol. 12, nr 4, s. 1936-1966
Emneord [en]
Convolutional neural networks, Deep learning, Shearlets, Wavefront set, Convolution, Data mining, Extraction, Image processing, Inverse problems, Neural networks, Wavefronts, Algorithmic approach, Competing algorithms, Convolutional neural network, Microlocal analysis, Model-based method, Orientation detections, Shearlet transforms, Deep neural networks
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Identifikatorer
URN: urn:nbn:se:kth:diva-268578DOI: 10.1137/19M1237594ISI: 000545944800013Scopus ID: 2-s2.0-85077054159OAI: oai:DiVA.org:kth-268578DiVA, id: diva2:1428689
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QC 20200506

Tilgjengelig fra: 2020-05-06 Laget: 2020-05-06 Sist oppdatert: 2024-04-25bibliografisk kontrollert

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