A Probabilistic Model of Human Activity Recognition with Loose Clothing †
Abstract
:1. Introduction
2. Related Work
3. Probabilistic Modeling Framework
3.1. Problem Definition
3.2. Probabilistic Model of Fabric Motion
3.3. Example: Oscillatory Motion
4. Activity Recogntion Via Statistical Methods
4.1. Case Study 1: Simple Harmonic Motion
4.1.1. Materials and Methods
4.1.2. Results
4.2. Case Study 2: Scotch Yoke
4.2.1. Materials and Methods
4.2.2. Results
4.3. Case Study 3: Human Activity Recognition
4.3.1. Hypothesis
4.3.2. Experimental Procedure
4.3.3. Participants
4.3.4. Results
5. Discussion
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
Appendix A
Appendix A.1. Simulation of Scotch Yoke
Appendix A.1.1. The PDF of Fabric Position
Appendix A.1.2. The CDF of Fabric Position
Appendix A.2. The Error of Yoke Movement Estimation
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Reference | Sensor Type | Sensor Placement | Type of Clothes or Fabric | Activities | Method | Strength/Finding | Limitation |
---|---|---|---|---|---|---|---|
Jayasinghe et al. [10] | accelerometers | waist, thigh, ankle and clothes in similar position | slacks, skirt and frock | four daily activities | correlation coefficients decision tree | clothing and body worn sensor data are correlated | sensors are heavy |
Jayasinghe et al. [11] | IMU | waist, thigh, lower shank and clothes in similar position | daily clothes | gait cycle | correlation coefficients | clothing worn sensor data have key points in the gait cycle | classification accuracy of the sensors has not been investigated |
Jayasinghe et al. [17] | IMU | waist, thigh, ankle and clothes in similar position | daily clothes | 4 static and 2 dynamic activities | KNN | clothing worn sensor has good posture classification | the number of participants is limited |
Michael et al. [9] | accelerometers | rigid pendulum and a piece of fabric attached | denim, jersey and roma | low and high swing speed | SVM, DRM | fabric sensors has higher accuracy of AR | lack theoretical model |
Bello et al. [13] | capacitive | four antennas to cover the chest, shoulders, back and arms | loose blazer | 20 posture/gestures | conv2D | sensor is not affected from muscular strength | affected from conductors |
Cha et al. [14] | piezoelectric | clothing near knee, hip | loose trousers | gait | rule-based algorithm | feasibility of gait detection | gender of participants is not balanced |
Skach et al. [15] | pressure | clothing near thigh | loose trousers | 19 postures | random forest | sensor can detect human postures | the upper body has not been tested |
Lin et al. [16] | strain | clothing near shoulder, elbow, waist and abdomen | loose jacket | daily activities, postures and slouch | CNN-LSTM | sensor can detect human postures | gender of participants is not balanced |
Tang et al. [18] | strain | several positions on the body | juncus effusus fiber | several daily activities | gauge factor | sensitive stretchable | the maximum sensing range is limited |
Lu et al. [19] | strain | human joints | conductive PSKF@rGO | exercise monitoring | gauge factor | useful under extreme conditions | the strain range is limited |
Xu et al. [20] | strain | various human body parts | composite fiber | language recognition pulse diagnosis | gauge factor | sensitivity, stability and durability | the number of participants is limited |
Our approach | magnetic | scotch yoke with a piece of fabric attached wrist and sleeve | woven cotton | various rotating frequencies | SVM |
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Shen, T.; Di Giulio, I.; Howard, M. A Probabilistic Model of Human Activity Recognition with Loose Clothing. Sensors 2023, 23, 4669. https://doi.org/10.3390/s23104669
Shen T, Di Giulio I, Howard M. A Probabilistic Model of Human Activity Recognition with Loose Clothing. Sensors. 2023; 23(10):4669. https://doi.org/10.3390/s23104669
Chicago/Turabian StyleShen, Tianchen, Irene Di Giulio, and Matthew Howard. 2023. "A Probabilistic Model of Human Activity Recognition with Loose Clothing" Sensors 23, no. 10: 4669. https://doi.org/10.3390/s23104669