摘要
本文介绍用“方差准则”研究心电图数据压缩。心电图数据经沃尔什变换后转换为变换域系数,按“方差准则”对系数进行取舍,实现系数的压缩,然后通过反变换重建心电图。给出原始心电图和重建心电图的打印图以及压缩比和归一化均方误差。
ABSTRACT
In this paper, study on ECG data-compression using 'Variance criterion' is presented. Data of ECG are converted into transform domain coefficient via walsh transform. According to 'Variance criteron' we retain and discard, thus comPressing coefficients and ECG reconstructed via inverse transform. Original and reconstructed ECG, compression ratio and normalized mean square error are given.
出处
《中国生物医学工程学报》
CAS
CSCD
北大核心
1989年第3期164-169,共6页
Chinese Journal of Biomedical Engineering
