4.6 Review

A survey of visual and procedural handwriting analysis for neuropsychological assessment

Journal

NEURAL COMPUTING & APPLICATIONS
Volume 34, Issue 12, Pages 9561-9578

Publisher

SPRINGER LONDON LTD
DOI: 10.1007/s00521-022-07185-6

Keywords

Neuropsychology; Artificial intelligence; Computer aided diagnosis; Visual and procedural handwriting analysis; Classification

Funding

  1. Higher Education Commission (HEC), Pakistan [8910/Federal/NRPU/RD/HEC/2017]
  2. Spanish government [PID2019-109099RB-C41]
  3. European Union FEDER program

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This paper discusses the current applications and research progress of artificial intelligence systems in handwriting and drawing analysis, providing a survey of related work to guide and inspire novice researchers. The paper analyzes visual analysis techniques and procedural analysis techniques for handwriting samples, and discusses the strengths and weaknesses of commonly used handwriting representation and estimation methods. It also highlights the limitations of existing processes and the challenges faced when designing such systems. Finally, the paper proposes directions and suggestions for further research.
To date, Artificial Intelligence systems for handwriting and drawing analysis have primarily targeted domains such as writer identification and sketch recognition. Conversely, the automatic characterization of graphomotor patterns as biomarkers of brain health is a relatively less explored research area. Despite its importance, the work done in this direction is limited and sporadic. This paper aims to provide a survey of related work to provide guidance to novice researchers and highlight relevant study contributions. The literature has been grouped into visual analysis techniques and procedural analysis techniques. Visual analysis techniques evaluate offline samples of a graphomotor response after completion. On the other hand, procedural analysis techniques focus on the dynamic processes involved in producing a graphomotor reaction. Since the primary goal of both families of strategies is to represent domain knowledge effectively, the paper also outlines the commonly employed handwriting representation and estimation methods presented in the literature and discusses their strengths and weaknesses. It also highlights the limitations of existing processes and the challenges commonly faced when designing such systems. High-level directions for further research conclude the paper.

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