ECG记录图纸数字化过程中的幅值定标方法及其后处理

讨论ECG记录图纸数字化过程中基于自相关的定标方法,并对定标后的心电数据进行数据平滑,50Hz滤波以及基线漂移后处理的.结果表明,自相关定标算法效果非常好,而数据的后处理对于提高ECG记录图纸数字化的精度是至关重要的.

Amplitude Scaling and Post-Processing Methods for Digitalization of Paper-Recorded ECG Curves

This thesis discusses the method of amplitude scaling by means of self-correlation algorithm based on background grid during the course of digitalization of paper-recorded ECG curves. And post-processing methods of ECG data after scaling are also discussed, such as data smoothing, 50Hz filter and baseline drift elimination. The result shows that the effect of self-correlation algorithm is very good and post-processing methods of ECG data are very important to improve the precision of digitalization of paper-recorded ECG curves.