Extraction of digital wavefront sets using applied harmonic analysis and deep neural networks
2019 (Engelska) Ingår i: SIAM Journal on Imaging Sciences, E-ISSN 1936-4954, Vol. 12, nr 4, s. 1936-1966Artikel i tidskrift (Refereegranskat) 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.
Ort, förlag, år, upplaga, sidor Society for Industrial & Applied Mathematics (SIAM) , 2019. Vol. 12, nr 4, s. 1936-1966
Nyckelord [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
Nationell ämneskategori
Elektroteknik och elektronik
Identifikatorer URN: urn:nbn:se:kth:diva-268578 DOI: 10.1137/19M1237594 ISI: 000545944800013 Scopus ID: 2-s2.0-85077054159 OAI: oai:DiVA.org:kth-268578 DiVA, id: diva2:1428689
Anmärkning QC 20200506
2020-05-062020-05-062024-04-25 Bibliografiskt granskad