Individuality-Preserving Gait Pattern Prediction Based on Gait Feature Transitions

Tsuyoshi HIGASHIGUCHI  Norimichi UKITA  Masayuki KANBARA  Norihiro HAGITA  

Publication
IEICE TRANSACTIONS on Information and Systems   Vol.E101-D   No.10   pp.2501-2508
Publication Date: 2018/10/01
Online ISSN: 1745-1361
DOI: 10.1587/transinf.2018EDP7082
Type of Manuscript: PAPER
Category: Pattern Recognition
Keyword: 
gait,  human skeleton,  individuality-preserving prediction,  

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Summary: 
This paper proposes a method for predicting individuality-preserving gait patterns. Physical rehabilitation can be performed using visual and/or physical instructions by physiotherapists or exoskeletal robots. However, a template-based rehabilitation may produce discomfort and pain in a patient because of deviations from the natural gait of each patient. Our work addresses this problem by predicting an individuality-preserving gait pattern for each patient. In this prediction, the transition of the gait patterns is modeled by associating the sequence of a 3D skeleton in gait with its continuous-value gait features (e.g., walking speed or step width). In the space of the prediction model, the arrangement of the gait patterns are optimized so that (1) similar gait patterns are close to each other and (2) the gait feature changes smoothly between neighboring gait patterns. This model allows to predict individuality-preserving gait patterns of each patient even if his/her various gait patterns are not available for prediction. The effectiveness of the proposed method is demonstrated quantitatively. with two datasets.