Sökning: "Grayson Webb"

Hittade 2 uppsatser innehållade orden Grayson Webb.

  1. 1. A Gaussian Mixture Model based Level Set Method for Volume Segmentation in Medical Images

    Master-uppsats, Linköpings universitet/Beräkningsmatematik; Linköpings universitet/Tekniska fakulteten

    Författare :Grayson Webb; [2018]
    Nyckelord :Probablistic level set methods; Gaussian mixture models; image segmentation; volume segmentation; medical images;

    Sammanfattning : This thesis proposes a probabilistic level set method to be used in segmentation of tumors with heterogeneous intensities. It models the intensities of the tumor and surrounding tissue using Gaussian mixture models. LÄS MER

  3. 2. Biorthogonal Polynomials

    Kandidat-uppsats, Linköpings universitet/Matematik och tillämpad matematik; Linköpings universitet/Tekniska fakulteten

    Författare :Grayson Webb; [2017]
    Nyckelord :Orthogonal polynomials; Biorthogonal polynomials; Totally positive kernel; Chebyshev system; Interlacement properties; Recurrence relations;

    Sammanfattning : In this thesis we present some fundamental results regarding orthogonal polynomials and biorthogonal polynomials, the latter defined as in the article "Cauchy Biorthogonal Polynomials", authored by Bertola, Gekhtman, and Szmigielski. We show that total positivity of the kernel can be weakened and how this implies that interlacement for biorthogonal polynomials holds in general. LÄS MER