Bertinelli M, Catelli A, Combi C, Pinciroli F
Med Biol Eng Comput. 1989 Jan;27(1):33-40. doi: 10.1007/BF02442167.
We have tested some techniques of ECG compression on the BIH/MIT Arrhythmias database. We have applied the following methods: (1) method of differences; (2) compression by prediction; (3) sample skipping methods; with the following kinds of errors: amplitude error, amplitude and delay error, area error. In the first and second method the average code length found after application of the Huffmann encoding has been found to be about 4 bits sample-1. For the third method the final compression ratio varies according to the allowed error; with a limited error threshold, however, we have reached an average compression a little lower than 1:5.
我们已经在BIH/MIT心律失常数据库上测试了一些心电图压缩技术。我们应用了以下方法：(1) 差分法；(2) 预测压缩法；(3) 样本跳跃法；产生了以下几种误差：幅度误差、幅度和延迟误差、面积误差。在第一种和第二种方法中，应用霍夫曼编码后发现的平均码长约为每样本4比特。对于第三种方法，最终压缩率根据允许的误差而变化；然而，在有限的误差阈值下，我们达到了略低于1:5的平均压缩率。
