Cited by 30Gaze Tracking and Assistive TechnologyHand Gesture Recognition SystemsContext-Aware Activity Recognition Systems

Evaluation of Pattern Recognition Methods for Head Gesture-Based Interface of a Virtual Reality Helmet Equipped with a Single IMU Sensor

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Hachaj, Tomasz, Piekarczyk, Marcin·2019·Sensors

Abstract

The motivation of this paper is to examine the effectiveness of state-of-the-art and newly proposed motion capture pattern recognition methods in the task of head gesture classifications. The head gestures are designed for a user interface that utilizes a virtual reality helmet equipped with an internal measurement unit (IMU) sensor that has 6-axis accelerometer and gyroscope. We will validate a classifier that uses Principal Components Analysis (PCA)-based features with various numbers of dimensions, a two-stage PCA-based method, a feedforward artificial neural network, and random forest. Moreover, we will also propose a Dynamic Time Warping (DTW) classifier trained with extension of DTW Barycenter Averaging (DBA) algorithm that utilizes quaternion averaging and a bagged variation of previous method (DTWb) that utilizes many DTW classifiers that perform voting. The evaluation has been performed on 975 head gesture recordings in seven classes acquired from 12 persons. The highest value of recognition rate in a leave-one-out test has been obtained for DTWb and it equals 0.975 (0.026 better than the best of state-of-the-art methods to which we have compared our approach). Among the most important applications of the proposed method is improving life quality for people who are disabled below the neck by supporting, for example, an assistive autonomous power chair with a head gesture interface or remote controlled interfaces in robotics.

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Authors
Hachaj, T., & Piekarczyk, M.
Affiliations
Uniwersytet Komisji Edukacji Narodowej w Krakowie (PL)
Corresponding author
Hachaj, Tomasz
Venue
Sensors
Publisher
MDPI AG
Published
2019-12-08
Volume
19
Issue
24
Pages
5408
ISSN
1424-8220 (ISSN-L)
OpenAlex
W2991765348
Cited by
30
References
60
Citations by year
2026: 1 · 2025: 5 · 2024: 3 · 2023: 7 · 2022: 2 · 2021: 7 · 2020: 5
FWCI
3.31
Type
journal article
Language
en
Open access
Locations
  • Sensors (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
Narodowe Centrum Nauki (2015/17/D/ST6/04051)
Topics
  • Physical Sciences › Computer Science › Human-Computer Interaction › Gaze Tracking and Assistive Technology
  • Physical Sciences › Computer Science › Human-Computer Interaction › Hand Gesture Recognition Systems
  • Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Context-Aware Activity Recognition Systems
Keywords
head gesture recognition, inertial measurement unit, motion capture, dynamic time warping, bagging, principal component analysis, artificial neural networks, random forest, assistive technology, wheelchair control
MeSH terms
Virtual Reality, Algorithms, Head, Humans, Motion, Pattern Recognition, Automated, Principal Component Analysis, Accelerometry

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