Authors
Jiri Mekyska, Marcos Faundez-Zanuy, Zdenek Mzourek, Zoltan Galaz, Zdenek Smekal, Sara Rosenblum
Publication date
2016/8/3
Journal
IEEE Transactions on Human-Machine Systems
Volume
47
Issue
2
Pages
235-248
Publisher
IEEE
Description
Developmental dysgraphia, being observed among 10-30% of school-aged children, is a disturbance or difficulty in the production of written language that has to do with the mechanics of writing. The objective of this study is to propose a method that can be used for automated diagnosis of this disorder, as well as for estimation of difficulty level as determined by the handwriting proficiency screening questionnaire. We used a digitizing tablet to acquire handwriting and consequently employed a complex parameterization in order to quantify its kinematic aspects and hidden complexities. We also introduced a simple intrawriter normalization that increased dysgraphia discrimination and HPSQ estimation accuracies. Using a random forest classifier, we reached 96% sensitivity and specificity, while in the case of automated rating by the HPSQ total score, we reached 10% estimation error. This study proves that digital …
Total citations
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Scholar articles
J Mekyska, M Faundez-Zanuy, Z Mzourek, Z Galaz… - IEEE Transactions on Human-Machine Systems, 2016