Cross-subject and cross-modal transfer for generalized abnormal gait pattern recognition
File(s)TNNLS_19_Final (1).pdf (12.33 MB) TNNLS_19_Supplementary.pdf (2.83 MB)
Accepted version
Supporting information
Author(s)
Gu, Xiao
Guo, Yao
Deligianni, Fani
Lo, Benny
Yang, Guang-Zhong
Type
Journal Article
Abstract
For abnormal gait recognition, pattern-specific features indicating abnormalities are interleaved with the subject-specific differences representing biometric traits. Deep representations are, therefore, prone to overfitting, and the models derived cannot generalize well to new subjects. Furthermore, there is limited availability of abnormal gait data obtained from precise Motion Capture (Mocap) systems because of regulatory issues and slow adaptation of new technologies in health care. On the other hand, data captured from markerless vision sensors or wearable sensors can be obtained in home environments, but noises from such devices may prevent the effective extraction of relevant features. To address these challenges, we propose a cascade of deep architectures that can encode cross-modal and cross-subject transfer for abnormal gait recognition. Cross-modal transfer maps noisy data obtained from RGBD and wearable sensors to accurate 4-D representations of the lower limb and joints obtained from the Mocap system. Subsequently, cross-subject transfer allows disentangling subject-specific from abnormal pattern-specific gait features based on a multiencoder autoencoder architecture. To validate the proposed methodology, we obtained multimodal gait data based on a multicamera motion capture system along with synchronized recordings of electromyography (EMG) data and 4-D skeleton data extracted from a single RGBD camera. Classification accuracy was improved significantly in both Mocap and noisy modalities.
Date Issued
2021-02-01
Date Acceptance
2020-07-09
Citation
IEEE Transactions on Neural Networks and Learning Systems, 2021, 32 (2), pp.546-560
ISSN
1045-9227
Publisher
Institute of Electrical and Electronics Engineers
Start Page
546
End Page
560
Journal / Book Title
IEEE Transactions on Neural Networks and Learning Systems
Volume
32
Issue
2
Copyright Statement
© 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Sponsor
Engineering & Physical Science Research Council (E
British Council (UK)
Grant Number
EP/K503733/1
330760239
Subjects
Science & Technology
Technology
Computer Science, Artificial Intelligence
Computer Science, Hardware & Architecture
Computer Science, Theory & Methods
Engineering, Electrical & Electronic
Computer Science
Engineering
Feature extraction
Electromyography
Skeleton
Kinematics
Data mining
Gait recognition
Noise measurement
Body sensor network
gait analysis
model generalization
multimodal representation
Artificial Intelligence & Image Processing
Publication Status
Published
Date Publish Online
2020-07-29