Yao Li, Xin Wang, Wentao He, Baodai Shi. Hand Gesture Recognition Using Ultra-Wideband Radar with Random Forest[J]. Laser & Optoelectronics Progress, 2021, 58(22): 2207002
- Laser & Optoelectronics Progress
- Vol. 58, Issue 22, 2207002 (2021)
Fig. 1. Flow chart of echo signal processing
Fig. 2. Comparison of time domain and frequency domain among different gestures. (a) Gesture 1; (b) gesture 2; (c) gesture 3; (d) gesture 4
Fig. 3. Flowchart of system working
Fig. 4. Feature map clustering analysis
Fig. 5. Clustering results for different K values. (a) Original image; (b) K=2; (c) K =4; (d) K =8
Fig. 6. Visualization of clustering results
Fig. 7. Random forest visualization
Fig. 8. Contribution rate of some features
Fig. 9. SNR of maps with different channel numbers
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Table 1. Comparison of recognition accuracy for different number of accumulated echo pulses
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Table 2. Comparison of accuracy for different feature maps
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Table 3. Results of classification for different parameter settings of random forest
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Table 4. Setting of parameters in gesture recognition algorithm
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Table 5. Comparison of proposed algorithm with other algorithms
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