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Stable ptychographic phase retrieval via lost subspace completion.
In: (28th European Signal Processing Conference (EUSIPCO), 24-28 August 2020). IEEE, 2020. 975-979 ( ; 2021-January)
In this paper, we consider a special case of the phase retrieval problem called ptychography. Its is a popular technique of imaging, based on local illuminations of a specimen and further reconstruction from the far field diffraction patterns. The stability and success of the recovery process is heavily based on the choice of the illumination function commonly called a window. It describes the distribution of the light along the measured region. While for some windows the conditioning can be controlled, many important classes of windows, such as Gaussian windows, were not covered. We present a subspace completion method, which allows for a well-conditioned reconstruction for a much wider choice of windows, including Gaussian windows.
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Publikationstyp
Artikel: Konferenzbeitrag
Schlagwörter
Phase Retrieval ; Ptychography ; Regularization
ISSN (print) / ISBN
2219-5491
Konferenztitel
28th European Signal Processing Conference (EUSIPCO)
Konferzenzdatum
24-28 August 2020
Quellenangaben
Band: 2021-January,
Seiten: 975-979
Verlag
IEEE
Nichtpatentliteratur
Publikationen
Institut(e)
Institute of Computational Biology (ICB)