On exploiting wavelet bases in statistical region-based segmentation

Mikkel Bille Stegmann, Søren Forchhammer, Søren I. Olsen (Editor)

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

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    Abstract

    Statistical region-based segmentation methods such as the Active Appearance Models establish dense correspondences by modelling variation of shape and pixel intensities in low-resolution 2D images. Unfortunately, for high-resolution 2D and 3D images, this approach is rendered infeasible due to excessive storage and computational requirements. This paper addresses the problem by modelling the appearance of wavelet coefficient subsets contrary to the pixel intensities. We call this Wavelet Enhanced Appearance Modelling (WHAM). Experiments using the orthogonal Haar wavelet and the bi-orthogonal CDF 9-7 wavelet on cardiac MRIs and human faces show that the segmentation accuracy is minimally degraded at compression ratios of 1:10 and 1:20, respectively.
    Original languageEnglish
    Title of host publicationProc. 11th Danish Conference on Pattern Recognition and Image Analysis
    PublisherDepartment of Computer Science, University of Copenhagen (DIKU)
    Publication date2002
    Pages75-82
    Publication statusPublished - 2002

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