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Link to original content: https://doi.org/10.1007/s11590-016-1031-7
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A DC optimization-based clustering technique for edge detection

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Abstract

We introduce a method for edge detection which is based on clustering the pixels representing any given digital image into two sets (the edge pixels and the non-edge ones). The process is based on associating to each pixel an appropriate vector representing the differences in brightness w.r.t. the surrounding pixels. Clustering is driven by the norms of such vectors, thus it takes place in \(\mathbb {R}\), which allows us to use a (simple) DC (Difference of Convex) optimization algorithm to get the clusters. A novel thinning technique, based on calculation of the edge phase angles, refines the classification obtained by the clustering algorithm. The results of some numerical experiments are also provided.

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Author information

Authors and Affiliations

  1. Computer and Software Engineering Department, College of Engineering, AlMystansiriya University, Baghdad, Iraq

    W. Khalaf

  2. Istituto di Calcolo e Reti ad Alte Prestazioni - C.N.R., 87036, Rende (CS), Italy

    A. Astorino

  3. ICT Sud, 87036, Rende (CS), Italy

    P. D’Alessandro

  4. D.I.M.E.S., Università della Calabria, 87036, Rende (CS), Italy

    M. Gaudioso

Authors
  1. W. Khalaf
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  2. A. Astorino
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  3. P. D’Alessandro
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  4. M. Gaudioso
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Corresponding author

Correspondence to M. Gaudioso.

Additional information

The work has been partially supported by Project PON 01_01180 “Neurostar”.

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Khalaf, W., Astorino, A., D’Alessandro, P. et al. A DC optimization-based clustering technique for edge detection. Optim Lett 11, 627–640 (2017). https://doi.org/10.1007/s11590-016-1031-7

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