Coalescence analysis for evolving foams via optical flow computation on projection image sequences

Anton Myagotin, Alexey Ershov, Lukas Helfen, Raquel Verdejo, Alexander Belyaev, Tilo Baumbach

    Research output: Contribution to journalArticle

    5 Citations (Scopus)

    Abstract

    A novel image-processing procedure is proposed for the analysis of sequences of two-dimensional projection images. Sudden events like the merging of bubbles in an evolving foam can be detected and spatio-temporally located in a given projection image sequence. The procedure is based on optical flow computations extended by a forward-backward check for each time step. Compared with prior methods, efficient suppression of noise or false events is achieved owing to uniform foam motion, and the reliability of detection is thus increased. The applicability of the proposed procedure in combination with synchrotron radiography is illustrated by a series of characteristic studies of foams of different kind. First, the detection of single-bubble collapses in aqueous foams is considered. Second, a spatial distribution of coalescence events in metals foamed in casting molds is estimated. Finally, the structural stability of polymer foams containing admixed solid nanoparticles is examined.

    Original languageEnglish
    Pages (from-to)483-491
    Number of pages9
    JournalJournal of Synchrotron Radiation
    Volume19
    Issue number4
    DOIs
    Publication statusPublished - 1 Jul 2012

    Fingerprint

    Optical flows
    Coalescence
    foams
    coalescing
    Foams
    projection
    bubbles
    Radiography
    structural stability
    Molds
    radiography
    Synchrotrons
    Merging
    Spatial distribution
    image processing
    spatial distribution
    Casting
    synchrotrons
    Image processing
    retarding

    Keywords

    • foam
    • image analysis
    • optical flow
    • radiography

    ASJC Scopus subject areas

    • Radiation
    • Nuclear and High Energy Physics
    • Instrumentation

    Cite this

    Coalescence analysis for evolving foams via optical flow computation on projection image sequences. / Myagotin, Anton; Ershov, Alexey; Helfen, Lukas; Verdejo, Raquel; Belyaev, Alexander; Baumbach, Tilo.

    In: Journal of Synchrotron Radiation, Vol. 19, No. 4, 01.07.2012, p. 483-491.

    Research output: Contribution to journalArticle

    Myagotin, Anton ; Ershov, Alexey ; Helfen, Lukas ; Verdejo, Raquel ; Belyaev, Alexander ; Baumbach, Tilo. / Coalescence analysis for evolving foams via optical flow computation on projection image sequences. In: Journal of Synchrotron Radiation. 2012 ; Vol. 19, No. 4. pp. 483-491.
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