Khalid Aznag
Computer Science Department, Cadi Ayyad University, Marrakesh, Morocco

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Affine Shape Comparison using Different Distances Khalid Aznag; Toufik Datsi; Ahmed El Oirrak; Essaid El Bachari
JOIV : International Journal on Informatics Visualization Vol 4, No 3 (2020)
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/joiv.4.3.388

Abstract

In this work, we propose to compare affine shape using Hausdorff distance (HD), Dynamic Time Warping (DTW), Frechet (DF), and Earth Mover distance (EMD). Where there is only a change in resolution shape distance are computed between shape coordinates because the distance is not invariant under rotation or affinity. In case of transformation, distances are calculated not between shape coordinates but between Arc length or Affine Arc length. Arc length is invariant under rotation while Affine Arc length is invariant under affinity. The main advantage is invariance under change of resolution, rotation, and affinity.