Please use this identifier to cite or link to this item: http://hdl.handle.net/2080/4073
Title: Gait Event Prediction of People with Cerebral Palsy using Feature Uncertainty: A Low-Cost Approach
Authors: Chakraborty, Saikat
Thomas, Noble
Nandy, Anup
Keywords: Cerebral Palsy
Dempster-Shafer theory
gait event
gait phase
Kinect v2
Issue Date: Oct-2023
Citation: 25th ACM International Conference on Multimodal Interaction, Paris, France, 9-13 October 2023
Abstract: Incorporation of feature uncertainty during model construction explores the real generalization ability of that model. But this factor has been avoided often during automatic gait event detection for Cerebral Palsy patients. Again, the prevailing vision-based gait event detection systems are expensive due to incorporation of high-end motion tracking cameras. This study proposes a low-cost gait event detection system for heel strike and toe-of events. A state-space model was constructed where the temporal evolution of gait signal was devised by quantifying feature uncertainty. The model was trained using Cardif classifer. Ankle velocity was taken as the input feature. The frame associated with state transition was marked as a gait event. The model was tested on 15 Cerebral Palsy patients and 15 normal subjects. Data acquisition was performed using low-cost Kinect cameras. The model identifed gait events on an average of 2 frame error. All events were predicted before the actual occurrence. Error for toe-of was ≈ 21% less than the heel strike. Incorporation of the uncertainty factor in the detection of gait events exhibited a competing performance with respect to state-of-the-art.
Description: Copyright belongs to proceeding publisher
URI: http://hdl.handle.net/2080/4073
Appears in Collections:Conference Papers

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