An optical flow-based state-space model of the vocal folds

Alba Granados, Jonas Brunskog

    Research output: Contribution to journalJournal articleResearchpeer-review


    High-speed movies of the vocal fold vibration are valuable data to reveal vocal fold features for voice pathology diagnosis. This work presents a suitable Bayesian model and a purely theoretical discussion for further development of a framework for continuum biomechanical features estimation. A linear and Gaussian nonstationary state-space model is proposed and thoroughly discussed. The evolution model is based on a self-sustained three-dimensional finite element model of the vocal folds, and the observation model involves a dense optical flow algorithm. The results show that the method is able to capture different deformation patterns between the computed optical flow and the finite element deformation, controlled by the choice of the model tissue parameters.
    Original languageEnglish
    JournalJournal of the Acoustical Society of America
    Issue number6
    Pages (from-to)EL543-8
    Publication statusPublished - 2017


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