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The Signal Multi-Vector

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Abstract

This work covers a fundamental problem of local phase based image analysis: the isotropic generalization of the classical 1D analytic signal to two dimensions. The analytic signal enables the analysis of local phase and amplitude information of 1D signals. Local phase, amplitude and additional orientation information can be extracted by the 2D monogenic signal with the restriction to intrinsically 1D signals. In case of 2D image signals the monogenic signal enables the rotationally invariant analysis of lines and edges. In this work we present the 2D analytic signal as a novel generalization of both the analytic signal and the 2D monogenic signal. In case of 2D image signals the 2D analytic signal enables the isotropic analysis of lines, edges, corners and junctions in one unified framework. Furthermore, we show that 2D signals are defined on a 3D projective subspace of the homogeneous conformal space which delivers a descriptive geometric interpretation of signals providing new insights on the relation of geometry and 2D image signals. Finally, we will introduce a novel algebraic signal representation, which can be regarded as an alternative and fully isomorphic representation to classical matrices and tensors. We will show the solution of isotropic intrinsically 2D image analysis without the need of steering techniques.

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Authors and Affiliations

  1. Raytrix GmbH, Schauenburgerstrasse 116, 24118, Kiel, Germany

    Lennart Wietzke

  2. Cognitive Systems Group, Department of Computer Science, Kiel University, Christian-Albrechts-Platz 4, 24118, Kiel, Germany

    Gerald Sommer

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  1. Lennart Wietzke
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  2. Gerald Sommer
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Correspondence to Lennart Wietzke.

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Wietzke, L., Sommer, G. The Signal Multi-Vector. J Math Imaging Vis 37, 132–150 (2010). https://doi.org/10.1007/s10851-010-0197-3

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