Point-based medialness for movement computing

Leymarie, Frederic Fol; Aparajeya, Prashant and MacGillivray, Carol. 2014. Point-based medialness for movement computing. In: , ed. MOCO '14 Proceedings of the 2014 International Workshop on Movement and Computing. Paris: Association for Computing Machinery, pp. 31-36. ISBN 978-1-4503-2814-2 [Book Section]

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Abstract or Description

We introduce the idea of using a perception-based medial point description of a biological form (such as a 2D profile of a moving animal) as a basis for movement computing which delivers computational schemes to automatically annotate movement and be capable of producing meaningful qualitative descriptions. We distinguish interior from exterior shape representation. Interior medialness is used to characterise deformations from straightness, corners and necks, while exterior medialness identifies the main concavities and inlands which are useful to verify parts extent and reason about articulation and movement. We define an interior dominant point as a well localised peak value in medialness representation, while an exterior dominant point is evaluated by identifying a region of concavity sub-tended by a minimum angular support. Furthermore, significant convex points are extracted from the object's form to further characterise the elongation of parts. We propose that our evaluated feature points are sufficiently representative, as a basis for shape characterisation, to address many of the goals of movement computing.

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Book Section

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Additional Information:

This work was partially funded by the European Union (FP7 –
ICT – FET; Grant Agreement #258749; CEEDs project).


Computer applications; Computer programming, Codons; Computational schemes; Dominant points; Line of action; Medialness; Perception-based; Shape representation; Visualising movement, Arts computing

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Date Deposited:

30 Jul 2014 12:10

Last Modified:

29 Apr 2020 16:26



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