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| Título: | A Comparison Framework for Walking Performances using aSpaces |
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| Autor/a: | Villanueva Pipaón, Juan José; Gonzàlez, Jordi; Varona, Javier; Roca i Marvà, Francesc Xavier; Gonzàlez, Jordi |
| Abstract: | In this paper, we address the analysis of human actions by comparing different performances of the same action executed by different actors. Specifically, we present a comparison procedure applied to the walking action, but the scheme can be applied to other different actions, such as bending, running, etc. To achieve fair comparison results, we define a novel human body model based on joint angles, which maximizes the differences between human postures and, moreover, reflects the anatomical structure of human beings. Subsequently, a human action space, called aSpace, is built in order to represent each performance (i.e., each predefined sequence of postures) as a parametric manifold. The final human action representation is called p-action, which is based on the most characteristic human body postures found during several walking performances. These postures are found automatically by means of a predefined distance function, and they are called key-frames. By using key-frames, we synchronize any performance with respect to the p- action. Furthermore, by considering an arc length parameterization, independence from the speed at which performances are played is attained. As a result, the style of human walking can be successfully analysed by establishing the differences of the joints between a male and a female walkers. |
| Materia(s): | -Model de moviment humà -Model de cos humà -Sincronització -Fotograma clau -Modelo de movimiento humano -Modelo de cuerpo humano -Sincronización -Fotograma clave -Human Motion Modeling -Human Body Modeling -Synchronization -Key-frames |
| Derechos: | open access
Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades. https://creativecommons.org/licenses/by-nc-nd/3.0/ |
| Tipo de documento: | Article |
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| Uri: | https://ddd.uab.cat/record/24552 |
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