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Number of zero velocity points: a critical parameter for handwriting model estimation towards dysgraphia diagnosis assistance

Abstract : A new avenue for handwriting analysis to help diagnose dysgraphia in children, using dynamic oscillatory models, has been investigated. The Parsimonious Oscillatory Model of Handwriting (POMH) is shown to be able to reconstruct the handwriting trace provided that it is sufficiently smooth. For children suffering from dysgraphia, POMH leads to greater deviation when trying to reconstruct the signal. This difference in POMH performance is thought to serve as a discriminant for automatically detecting children with dysgraphia. A critical parameter for POMH is the number of zero velocity points when writing a symbol. The relationships between age, number of zero velocity points and performance of POMH are investigated as premilinary work to establish a classification algorithm for dysgraphia diagnosis assistance.
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https://hal-cea.archives-ouvertes.fr/cea-03776053
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Submitted on : Tuesday, September 13, 2022 - 12:23:33 PM
Last modification on : Friday, September 16, 2022 - 3:04:54 AM

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  • HAL Id : cea-03776053, version 1

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Yunjiao Lu, Jérôme Boutet, Vincent Brault, Caroline Jolly, Etienne Labyt, et al.. Number of zero velocity points: a critical parameter for handwriting model estimation towards dysgraphia diagnosis assistance. 53èmes Journées de Statistique, Jun 2022, Lyon, France. ⟨cea-03776053⟩

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