Restoration of Ultrasound Images Using Spatially-Variant Kernel Deconvolution

Mihai I. Florea, Adrian Basarab, Denis Kouame, Sergiy A. Vorobyov

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussaConference contributionScientificvertaisarvioitu

1 Sitaatiot (Scopus)

Abstrakti

Most of the existing ultrasound image restoration methods consider a spatially-invariant point-spread function (PSF) model and circulant boundary conditions. While computationally efficient, this model is not realistic and severely limits the quality of reconstructed images. In this work, we address ultrasound image restoration under the hypothesis of piece-wise linear vertical variation of the PSF based on a small number of prototypes. No assumption is made on the structure of the prototype PSFs. To regularize the solution, we use the classical elastic net constraint. Existing methodologies are rendered impractical either due to their reliance on matrix inversion or due to their inability to exploit the strong convexity of the objective. Therefore, we propose an optimization algorithm based on the Accelerated Composite Gradient Method, adapted and optimized for this task. Our method is guaranteed to converge at a linear rate and is able to adaptively estimate unknown problem parameters. We support our theoretical results with simulation examples.

AlkuperäiskieliEnglanti
Otsikko2018 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2018 - Proceedings
JulkaisupaikkaUnited States
KustantajaIEEE
Sivut796-800
Sivumäärä5
Vuosikerta2018-April
ISBN (elektroninen)978-1-5386-4658-8
ISBN (painettu)978-1-5386-4659-5
DOI - pysyväislinkit
TilaJulkaistu - 10 syyskuuta 2018
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisuussa
TapahtumaIEEE International Conference on Acoustics, Speech, and Signal Processing - Calgary, Kanada
Kesto: 15 huhtikuuta 201820 huhtikuuta 2018
https://2018.ieeeicassp.org/

Julkaisusarja

NimiProceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing
ISSN (elektroninen)2379-190X

Conference

ConferenceIEEE International Conference on Acoustics, Speech, and Signal Processing
LyhennettäICASSP
MaaKanada
KaupunkiCalgary
Ajanjakso15/04/201820/04/2018
www-osoite

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    Siteeraa tätä

    Florea, M. I., Basarab, A., Kouame, D., & Vorobyov, S. A. (2018). Restoration of Ultrasound Images Using Spatially-Variant Kernel Deconvolution. teoksessa 2018 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2018 - Proceedings (Vuosikerta 2018-April, Sivut 796-800). [8461339] (Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing). IEEE. https://doi.org/10.1109/ICASSP.2018.8461339