A hybrid ECG signal compression algorithm using the wavelet transform

摘要

This paper presents a hybrid efficient ECG data compression algorithm using the DWT. The algorithm employs two cascaded encoding techniques, runlength followed by Huffman. The second encoding scheme considerably enhances the compression performance, as it reduces the data redundancies in the output stream of the first encoder. The performance of the compression algorithm is measured; a compression ratio of 49.6:1 was achieved for MIT-BIH record 117 at a PRD of 1.61.