The effect of geometric distortion on the local accuracy of the image registration algorithms using cross correlation is presented. Using a probabilistic model describing images as homogeneous random patterns, expressions for the mean and covariance of the local error vector in terms of image and noise autocorrelation functions, geometric distortion, and reference image area are derived. The geometric distortions considered are those represented by an affine transformation of image coordinates. It is shown that for a fixed geometric distortion there is an image size (integration area) that minimizes the local error. The optimum area deceases with inceasing geometric distortion.


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    Title :

    Image correlation with geometric distortion. Part 2: Effect on local accuracy


    Additional title:

    Korrelation von geometrisch verzerrten Bildern. Teil 2: Einfluss auf oertliche Genauigkeit


    Contributors:
    Mostafavi, H. (author) / Smith, F.W. (author)


    Publication date :

    1978


    Size :

    7 Seiten, 5 Bilder, 6 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English






    Image Correlation with Geometric Distortion Part 1: Acquisition Performance

    Mostafavier, Haddan / Smithber, Fred W. | IEEE | 1978


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