Sökning: "Graph wavelet transform"

Hittade 1 uppsats innehållade orden Graph wavelet transform.

  1. 1. Statistical Parametric Mapping of fMRI data using Spectral Graph Wavelets

    Master-uppsats, Medicinsk informatik; Tekniska högskolan

    Författare :Hamid Behjat; [2012]
    Nyckelord :Statistical parametric mapping; fMRI; Spectral graph theory; Graph wavelet transform; Wavelet thresholding;

    Sammanfattning : In typical statistical parametric mapping (SPM) of fMRI data, the functional data are pre-smoothed using a Gaussian kernel to reduce noise at the cost of losing spatial specificity. Wavelet approaches have been incorporated in such analysis by enabling an efficient representation of the underlying brain activity through spatial transformation of the original, un-smoothed data; a successful framework is the wavelet-based statistical parametric mapping (WSPM) which enables integrated wavelet processing and spatial statistical testing. LÄS MER