Robust computation of mutual information using spatially adaptive meshes

Hari Sundar, Dinggang Shen, George Biros, Chenyang Xu, Christos Davatzikos

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    28 Citations (Scopus)

    Abstract

    We present a new method for the fast and robust computation of information theoretic similarity measures for alignment of multi-modality medical images. The proposed method defines a non-uniform, adaptive sampling scheme for estimating the entropies of the images, which is less vulnerable to local maxima as compared to uniform and random sampling. The sampling is defined using an octree partition of the template image, and is preferable over other proposed methods of non-uniform sampling since it respects the underlying data distribution. It also extends naturally to a multi-resolution registration approach, which is commonly employed in the alignment of medical images. The effectiveness of the proposed method is demonstrated using both simulated MR images obtained from the BrainWeb database and clinical CT and SPECT images.

    Original languageEnglish
    Title of host publicationMedical Image Computing and Computer-Assisted Intervention - 10th International Conference, Proceedings
    PublisherSpringer Verlag
    Pages950-958
    Number of pages9
    EditionPART 1
    ISBN (Print)9783540757566
    DOIs
    Publication statusPublished - 2007
    Event10th International Conference on Medical Image Computing and Computer-Assisted Intervention, MICCAI 2007 - Brisbane, Australia
    Duration: 2007 Oct 292007 Nov 2

    Publication series

    NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
    NumberPART 1
    Volume4791 LNCS
    ISSN (Print)0302-9743
    ISSN (Electronic)1611-3349

    Other

    Other10th International Conference on Medical Image Computing and Computer-Assisted Intervention, MICCAI 2007
    Country/TerritoryAustralia
    CityBrisbane
    Period07/10/2907/11/2

    ASJC Scopus subject areas

    • Theoretical Computer Science
    • General Computer Science

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