Abstract
The article concerns the problem of finding the spatial curve which is the line of the abrupt or jump change in the 3d-shape, namely: the edge curve. There are many real applications where such a problems play a significant role. For instance, in computer vision in detection of edges in monochromatic pictures used in e.g. medicine diagnostics, biology and physics; in geology in analysis of satellite photographs of the earth surface for maps and/or determination of borders of forest areas, water resources, rivers, rock cliffs etc. In architecture the curves arising as a result of intersecting surfaces often are also objects of interest. The main focus of this paper is detection of abrupt changes in patterns defined by multidimensional functions. Our approach is based on the nonparametric Parzen kernel estimation of functions and their derivatives. An appropriate use of nonparametric methodology allows to establish the shape of an interesting edge curve.
Part of this research was carried out by the second author during his visit of the Westpomeranian University of Technology while on sabbatical leave from Concordia University.
Research of the first author financed under the program of the Polish Minister of Science and Higher Education under the name “Regional Initiative of Excellence” in the years 2019–2022 project number 020/RID/2018/19, the amount of financing 12,000,000.00 PLN. Research of the second author supported by the Natural Sciences and Engineering Research Council of Canada under Grant RGPIN-2015-06412.
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Gałkowski, T., Krzyżak, A. (2020). Edge Curve Estimation by the Nonparametric Parzen Kernel Method. In: Yang, H., Pasupa, K., Leung, A.CS., Kwok, J.T., Chan, J.H., King, I. (eds) Neural Information Processing. ICONIP 2020. Communications in Computer and Information Science, vol 1332. Springer, Cham. https://doi.org/10.1007/978-3-030-63820-7_43
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