Improved leg tracking with data association considering gait phase during turning motion in walk tests

Ayanori Yorozu, Toshiki Moriguchi, Masaki Takahashi

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

Abstract

Falling is a common problem in the growing elderly population and fall-risk assessment systems are needed for community-based fall prevention programs. In particular, the timed up & go test (TUG) is the clinical test most often used to evaluate elderly individual ambulatory ability in many clinical institutions or local communities. This paper presents an improved leg tracking method using a laser range sensor (LRS) for a gait measurement system to evaluate the motor function in walk tests such as TUG. The system tracks both legs and measures the trajectory of both legs. However, both legs might be close to each other and one leg might be hidden from the sensor. This is especially the case during the turning motion in the TUG, where the time that a leg is hidden from the LRS is longer than that during straight walking and the moving direction rapidly changes. These situations are likely to lead to false tracking and deteriorate the measurement accuracy of the leg positions. To solve these problems, a novel data association method considering the gait phase is proposed. From the experimental results with young people, we confirm that the proposed methods can reduce the chances of false tracking. In addition, we verify the measurement accuracy of the leg trajectory compared with a three-dimensional motion analysis system (VICON).

Original languageEnglish
Title of host publicationIEEE/ASME International Conference on Advanced Intelligent Mechatronics, AIM
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages903-908
Number of pages6
Volume2015-August
ISBN (Print)9781467391078
DOIs
Publication statusPublished - 2015 Aug 25
EventIEEE/ASME International Conference on Advanced Intelligent Mechatronics, AIM 2015 - Busan, Korea, Republic of
Duration: 2015 Jul 72015 Jul 11

Other

OtherIEEE/ASME International Conference on Advanced Intelligent Mechatronics, AIM 2015
CountryKorea, Republic of
CityBusan
Period15/7/715/7/11

Fingerprint

Sensors
Trajectories
Lasers
Risk assessment
Motion analysis

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Control and Systems Engineering
  • Computer Science Applications
  • Software

Cite this

Yorozu, A., Moriguchi, T., & Takahashi, M. (2015). Improved leg tracking with data association considering gait phase during turning motion in walk tests. In IEEE/ASME International Conference on Advanced Intelligent Mechatronics, AIM (Vol. 2015-August, pp. 903-908). [7222653] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/AIM.2015.7222653

Improved leg tracking with data association considering gait phase during turning motion in walk tests. / Yorozu, Ayanori; Moriguchi, Toshiki; Takahashi, Masaki.

IEEE/ASME International Conference on Advanced Intelligent Mechatronics, AIM. Vol. 2015-August Institute of Electrical and Electronics Engineers Inc., 2015. p. 903-908 7222653.

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

Yorozu, A, Moriguchi, T & Takahashi, M 2015, Improved leg tracking with data association considering gait phase during turning motion in walk tests. in IEEE/ASME International Conference on Advanced Intelligent Mechatronics, AIM. vol. 2015-August, 7222653, Institute of Electrical and Electronics Engineers Inc., pp. 903-908, IEEE/ASME International Conference on Advanced Intelligent Mechatronics, AIM 2015, Busan, Korea, Republic of, 15/7/7. https://doi.org/10.1109/AIM.2015.7222653
Yorozu A, Moriguchi T, Takahashi M. Improved leg tracking with data association considering gait phase during turning motion in walk tests. In IEEE/ASME International Conference on Advanced Intelligent Mechatronics, AIM. Vol. 2015-August. Institute of Electrical and Electronics Engineers Inc. 2015. p. 903-908. 7222653 https://doi.org/10.1109/AIM.2015.7222653
Yorozu, Ayanori ; Moriguchi, Toshiki ; Takahashi, Masaki. / Improved leg tracking with data association considering gait phase during turning motion in walk tests. IEEE/ASME International Conference on Advanced Intelligent Mechatronics, AIM. Vol. 2015-August Institute of Electrical and Electronics Engineers Inc., 2015. pp. 903-908
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