Alignment of diabetic feet images

Almar Klein, Ferdinand van der Heijden, Cornelis H. Slump, M.J. Uyl (Advisor)

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    Abstract

    This paper addresses the problem of aligning the images of feet taken at different instances in time. We propose to use SIFT keypoints to find the geometric deformation between two photo’s. We then have a set of landmarks for each image. By finding the corresponding landmarks (i.e. matching the keypoints), we know the deformation in a sparse set of points. Using these points, we calculate a B-spline deformation model, which allows us to describe the deformation in every point in the image. The algorithm that we have developed matches the keypoints, and updates the deformation model iteratively from coarse to fine. This significantly increases the performance in terms of speed and robustness. In order to obtain enough reliable keypoints, we propose a debayering algorithm to realize a relatively high resolution in the green channel. In addition we apply processing to the image to enhance its local contrast.
    Original languageUndefined
    Title of host publicationProceedings of SPS-DARTS 2007 the third annual IEEE Benelux/DSP Valley Signal Processing Symposium
    EditorsW. Philips
    Place of PublicationBelgium
    PublisherIEEE Benelux/DSP
    Pages185-193
    Number of pages8
    ISBN (Print)not assigned
    Publication statusPublished - 21 Mar 2007
    Event3rd Annual IEEE Benelux/DSP Valley Signal Processing Symposium, SPS-DARTS 2007 - Antwerp, Belgium
    Duration: 21 Mar 200722 Mar 2007
    Conference number: 3

    Publication series

    Name
    PublisherIEEE Benelux/DSP

    Conference

    Conference3rd Annual IEEE Benelux/DSP Valley Signal Processing Symposium, SPS-DARTS 2007
    Abbreviated titleSPS-DARTS
    CountryBelgium
    CityAntwerp
    Period21/03/0722/03/07

    Keywords

    • METIS-245702
    • EWI-9312
    • IR-63947

    Cite this

    Klein, A., van der Heijden, F., Slump, C. H., & Uyl, M. J. (2007). Alignment of diabetic feet images. In W. Philips (Ed.), Proceedings of SPS-DARTS 2007 the third annual IEEE Benelux/DSP Valley Signal Processing Symposium (pp. 185-193). Belgium: IEEE Benelux/DSP.