Zhuorong Li, Kaixuan Wang, Xinlong He, Zhongliang Mi, Yunqi Tang. Heel-Strike Event Detection Algorithm Based on Convolutional Neural Networks[J]. Laser & Optoelectronics Progress, 2019, 56(21): 211503
- Laser & Optoelectronics Progress
- Vol. 56, Issue 21, 211503 (2019)
Fig. 1. Gait events within a gait cycle
Fig. 2. Sample of 2-CSD-map
Fig. 3. Algorithm for generating CSD-maps
Fig. 4. Algorithm for normalization of CSD-maps
Fig. 5. Frame work of process
Fig. 6. Line chart of detection accuracy of n -CSD-maps
Fig. 7. Line chart of detection accuracy of n -CSD-maps obtained by PCA+SVM algorithm
Fig. 8. Histogram comparison of detection accuracy of CNN and SVM algorithms
Fig. 9. ROC curves of different angles. (a) 54°; (b) 72°; (c) 90°; (d) 108°; (e) 126°
Fig. 10. ROC curves from all angles
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Table 1. Confusion matrix when 6-CSD is used to obtain detection accuracy of cross angle
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