WAVELET- BASED DENOISING ALGORITHM FOR ROBUST EMG PATTERN RECOGNITION

被引：21

作者：

Phinyomark, Angkoon ^{[1
]}

Phukpattaranont, Pornchai ^{[1
]}

Limsakul, Chusak ^{[1
]}

机构：

[1] Prince Songkla Univ, Fac Engn, Dept Elect Engn, Hat Yai 90112, Songkhla, Thailand

来源：

FLUCTUATION AND NOISE LETTERS | 2011年 / 10卷 / 02期

关键词：

Electromyography (EMG) signal; white Gaussian noise; wavelet transform; wavelet denoising; robust recognition; SIGNAL ANALYSIS; CLASSIFICATION; ELECTROMYOGRAPHY; EXTRACTION; TRANSFORM;

D O I：

10.1142/S0219477511000466

中图分类号：

O1 [数学];

学科分类号：

0701 ; 070101 ;

摘要：

A successful pre-processing stage based on wavelet denoising algorithm for electromyography (EMG) signal recognition is proposed. From the limitation of traditional universal wavelet denoising, the optimal weighted parameter is assigned for universal thresholding method. The optimal weight for increasing EMG recognition accuracy is 50-60% of traditional universal threshold with hard transformation. Experimental results show that it improved approximately from 2 to 50% of recognition accuracy for EMG with signal-to-noise ratio (SNR) in the range of 20 to 0 dB compared to a baseline system (without pre-processing stage) and traditional universal wavelet denoising. The results are evaluated through a large EMG dataset with seven kinds of hand movements and eight types of muscle positions.

引用

页码：157 / 167

页数：11