The proposed QLV ECG processing algorithm achieved a compression ratio of 16.9:1 and reduced processing cost by 45.3%, with R-peak detection accuracy of 100% without noise.
A novel quad level vector algorithm for ECG Holter systems reduces processing costs by 45.3% while maintaining high compression ratios and R-peak detection accuracy.
Absolute Event Rate: 0% vs 0%
An ECG signal processing method with quad level vector (QLV) is proposed for the ECG holter system. The ECG processing consists of the compression flow and the classification flow, and the QLV is proposed for both flows to achieve better performance with low-computation complexity. The compression algorithm is performed by using ECG skeleton and the Huffman coding. Unit block size optimization, adaptive threshold adjustment, and 4-bit-wise Huffman coding methods are applied to reduce the processing cost while maintaining the signal quality. The heartbeat segmentation and the R-peak detection methods are employed for the classification algorithm. The performance is evaluated by using the Massachusetts Institute of Technology-Boston's Beth Israel Hospital Arrhythmia Database, and the noise robust test is also performed for the reliability of the algorithm. Its average compression ratio is 16.9:1 with 0.641% percentage root mean square difference value and the encoding rate is 6.4 kbps. The accuracy performance of the R-peak detection is 100% without noise and 95.63% at the worst case with -10-dB SNR noise. The overall processing cost is reduced by 45.3% with the proposed compression techniques.
Kim et al. (Thu,) reported a other. The proposed QLV ECG processing algorithm achieved a compression ratio of 16.9:1 and reduced processing cost by 45.3%, with R-peak detection accuracy of 100% without noise.