Automatic Assessment of the Type and Intensity of Agitated Hand Movements

Fiona Marshall, Shuai Zhang, Bryan Scotney

Research output: Contribution to journalArticlepeer-review

28 Downloads (Pure)

Abstract

With increasing numbers of people living with dementia, there is growing interest in the automatic monitoring of agitation. Current assessments rely on carer observations within a framework of behavioural scales. Automatic monitoring of agitation can supplement existing assessments, providing carers and clinicians with a greater understanding of the causes and extent of agitation. Despite agitation frequently manifesting in repetitive hand movements, the automatic assessment of repetitive hand movements remains a sparsely researched field. Monitoring hand movements is problematic due to the subtle differences between different types of hand movements and variations in how they can be carried out; the lack of training data creates additional challenges. This paper proposes a novel approach to assess the type and intensity of repetitive hand movements using skeletal model data derived from video. We introduce a video-based dataset of five repetitive hand movements symptomatic of agitation. Using skeletal keypoint locations extracted from video, we demonstrate a system to recognise repetitive hand movements using discriminative poses. By first learning characteristics of the movement, our system can accurately identify changes in the intensity of repetitive movements. Wide inter-subject variation in agitated behaviours suggests the benefit of personalising the recognition model with some end-user information. Our results suggest that data captured using a single conventional RGB video camera can be used to automatically monitor agitated hand movements of sedentary patients.
Original languageEnglish
Pages (from-to)401-422
Number of pages22
JournalJournal of Healthcare Informatics Research
Volume6
Issue number4
Early online date23 Sept 2022
DOIs
Publication statusPublished online - 23 Sept 2022

Bibliographical note

Funding Information:
The primary author was supported by a postgraduate studentship from the Northern Ireland Department for the Economy.

Publisher Copyright:
© 2022, The Author(s).

Keywords

  • Pervasive computing
  • Agitation
  • Pattern recognition
  • Skeletal keypoint models
  • Behaviour observation

Fingerprint

Dive into the research topics of 'Automatic Assessment of the Type and Intensity of Agitated Hand Movements'. Together they form a unique fingerprint.

Cite this