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Morphing of Triangular Meshes in Shape Space

Abstract

We present a novel approach to morph between two isometric poses of the same non-rigid object given as triangular meshes. We model the morphs as linear interpolations in a suitable shape space S. For triangulated 3D polygons, we prove that interpolating linearly in this shape space corresponds to the most isometric morph in R3. We then extend this shape space to arbitrary triangulations in 3D using a heuristic approach and show the practical use of the approach using experiments. Furthermore, we discuss a modified shape space that is useful for isometric skeleton morphing. All of the newly presented approaches solve the morphing problem without the need to solve a minimization problem.Nous pr\ue9sentons une technique novatrice permettant de transformer deux poses isom\ue9triques du m\ueame objet non rigide fourni sous forme de mailles triangulaires. Nous mod\ue9lisons les morphes comme interpolations lin\ue9aires dans un espace de formes appropri\ue9. Dans le cas des polygones 3D triangul\ue9s, nous prouvons que l'interpolation lin\ue9aire dans cet espace de forme correspond au morphe le plus isom\ue9trique en R3. Nous \ue9tendons ensuite cet espace de forme \ue0 des triangulations arbitraire en 3D en appliquant une approche heuristique et nous montrons l'utilisation concr\ue8te de cette technique au moyen d'exp\ue9riences. En outre, nous discutons d'un espace de forme modifi\ue9 qui est utile pour le morphage isom\ue9trique de squelettes. Toutes les nouvelles techniques r\ue9solvent le probl\ue8me du morphage sans qu'il soit n\ue9cessaire de r\ue9soudre un probl\ue8me de minimisation.NRC publication: Ye

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Last time updated on 08/06/2016

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