Rule based trajectory segmentation applied to an HMM-based isolated hand gesture recognizer

Jounghoon Beh, David Han, Hanseok Ko

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

In this paper, we propose a simple but effective method of modeling hand drawn gestures based on their angles and curvature of the trajectories. Each gesture trajectory is composed of a unique series of straight and curved segments. In our Hidden Markov Model (HMM) implementation, these gestures are modeled as connected series of states analogous to series of phonemes in speech recognition. The novelty of the work presented here is the automated process we developed in segmenting gesture trajectories based on a simple set of threshold values in curvature and accumulated curvature angle. In order to represent its angular distribution of each separated states, the von Mises distribution is used. Likelihood based state segmentation was implemented in addition to the threshold based method to ensure that gesture sets are segmented consistently. The proposed method can separate each angular state of training data at the initialization step, thus providing a solution to mitigate ambiguity on initializing HMM. For comparative studies, the proposed automated state segmentation based HMM initialization was considered over the conventional method. Effectiveness of the proposed method is shown as it achieved higher recognition rates in experiments over conventional methods.

Original languageEnglish
Title of host publicationHCI International 2011 - Posters' Extended Abstracts - International Conference, HCI International 2011, Proceedings
Pages146-150
Number of pages5
EditionPART 2
DOIs
Publication statusPublished - 2011
Event14th International Conference on Human-Computer Interaction, HCI International 2011 - Orlando, FL, United States
Duration: 2011 Jul 92011 Jul 14

Publication series

NameCommunications in Computer and Information Science
NumberPART 2
Volume174 CCIS
ISSN (Print)1865-0929

Other

Other14th International Conference on Human-Computer Interaction, HCI International 2011
CountryUnited States
CityOrlando, FL
Period11/7/911/7/14

Keywords

  • HMM initialization
  • Trajectory segmentation
  • hand gesture recognition
  • hidden Markov model

ASJC Scopus subject areas

  • Computer Science(all)
  • Mathematics(all)

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  • Cite this

    Beh, J., Han, D., & Ko, H. (2011). Rule based trajectory segmentation applied to an HMM-based isolated hand gesture recognizer. In HCI International 2011 - Posters' Extended Abstracts - International Conference, HCI International 2011, Proceedings (PART 2 ed., pp. 146-150). (Communications in Computer and Information Science; Vol. 174 CCIS, No. PART 2). https://doi.org/10.1007/978-3-642-22095-1_30