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AN EFFICIENT METHOD OF EEG SIGNAL COMPRESSION AND TRANSMISSION BASED TELEMEDICINE

机译:一种基于脑电信号压缩和传输的高效远程医学方法

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In this article, an efficient algorithm for EEG signals compressing and transmission based on RLE and DWT was introduced. The compression ratio (CR) provided by this algorithm is relatively high with low percent root-mean-square difference (PRDN) values. 50 records of EEG patients were monitored from the life database. Each record of EEG signals is commonly reported at the sampling rates in clinical and research settings between 250 and 2000 Hz. On the other hand, the new EEG data collection systems are able to record at sampling rates more than 20,000 Hz. The signals can be analyzed in both the time domain (TD) and frequency domain (FD) under using DWT where it preserves the necessary and main features of the EEG signals. Next step to implement this proposed algorithm is using the thresholding and the quantization over EEG signals coefficients and then encoded the signals by using RLE that enhancement significantly the compression ratio (CR). This article presents a robust method of EEG signal compression and transmission consists of DWT (discrete wavelet transform) and RLE (run length encoding) in order to improve and enhanced the compression. The suggested model presents an average values of CR (compression ratio), PRD (percentage root mean square difference), PRDN (normalized percentage root mean square difference), QS (quality score ), and SNR (signal to noise ratio) of 44.0, 0.36, 5.87, 143, 3.53 and 59.52 alternately over 50 records of EEG data.
机译:本文介绍了一种基于RLE和DWT的高效EEG信号压缩与传输算法。此算法提供的压缩率(CR)相对较高,而均方根差(PRDN)百分比较低。从生命数据库中监测了50例EEG患者的记录。脑电信号的每条记录通常以临床和研究机构在250至2000 Hz之间的采样率报告。另一方面,新的EEG数据收集系统能够以超过20,000 Hz的采样率进行记录。可以使用DWT在时域(TD)和频域(FD)中对信号进行分析,其中DWT保留了EEG信号的必要和主要特征。实施此建议算法的下一步是对EEG信号系数使用阈值化和量化,然后使用RLE对信号进行编码,从而显着提高压缩率(CR)。本文提出了一种健壮的EEG信号压缩方法,该方法由DWT(离散小波变换)和RLE(行程编码)组成,以改善和增强压缩效果。建议的模型显示的CR(压缩比),PRD(均方根百分比均方差),PRDN(归一化均方根均方差),QS(质量得分)和SNR(信噪比)的平均值为44.0,在50个EEG数据记录上交替显示0.36、5.87、143、3.53和59.52。

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