数据采集与处理2000，Vol.15Issue(4)：426-430,5.
帧间差值的DCT压缩ECG数据的方法
A Compression Method for ECG Based on DCT of Difference between Two Adjacent Frames
王培康 1费小英1
作者信息
- 1. 中国科学技术大学电子工程与信息科学系合肥，230027
- 折叠
摘要
Abstract
Since most of the DCT coefficients of an initial ECG signal are spread in low frequency,so is the energy of the signal, we can get a higher compression ratio (CR) by distributing DCT coefficients in a smaller region of low frequency and by degrading the amplitude of main DCT coefficients. ECG is a quasi-periodic signal with strong correlation between adjacent frames, so the difference sequence between them is more smooth and has lower amplitudes. Based on this property, a method of ECG data compression via DCT is presented in this paper, and it replaces the DCT coefficients of the original signal with the DCT coefficients of difference between two adjacent frames of the original signal and the DCT coefficients are encoded into two kinds of codes with different lengths. The quality of the reconstructed signal got by this way is high.关键词
数据压缩/ECG数据/离散余弦变换Key words
data compression/ECG data/discrete cosine transform分类
医药卫生引用本文复制引用
王培康,费小英..帧间差值的DCT压缩ECG数据的方法[J].数据采集与处理,2000,15(4):426-430,5.
