An efficient DCT-IV-based ECG compression algorithm and its hardware accelerator design

Author

Shin-Chi Lai ; Wei-Che Chien ; Chien-Sheng Lan ; Meng-Kun Lee ; Ching-Hisng Luo ; Sheau-Fang Lei

Author_Institution

Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan

fYear

2013

fDate

19-23 May 2013

Firstpage

1296

Lastpage

1299

Abstract

This paper presents a new efficient DCT-IV-based ECG compression algorithm with a higher Quality Score (QS) and a better Compressing Ratio (CR). The ECG signals sourced from MIT-BIT arrhythmia database with a sampling rate of 360 Hz are employed to be the test patterns for the evaluating the proposed compression algorithm. The simulation results show that the averages of CR, Percent RMS Difference (PRD), and QS are, respectively, 5.267, 0.187, and 28.223 for all 48 lead-V1 patterns of MIT-BIH database. Compared with Lee et al.´s algorithm, the QS value of the proposed method has a great improvement by 25.1%. Additionally, we use DCT-IV to be a unified transform kernel for ECG signal encoding and decoding because the formula of forward DCT-IV is same to its inverse. Also, we realize it to be a compact hardware accelerator with a fewer hardware resources. Therefore, it would be a better choice for realizing the ECG compressor in the future.

Keywords

data compression; decoding; discrete cosine transforms; electrocardiography; encoding; medical signal processing; ECG signal encoding-decoding; MIT-BIH database; MIT-BIT arrhythmia database; PRD; QS value; compressing ratio; efficient DCT-IV-based ECG compression algorithm; hardware accelerator design; hardware resource; percent RMS difference; quality score; unified transform kernel; Algorithm design and analysis; Compression algorithms; Databases; Electrocardiography; Encoding; Hardware; Transforms; The type-IV of Discrete Cosine Transform (DCT-IV); compression algorithm; electrocardiogram (ECG);

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (ISCAS), 2013 IEEE International Symposium on

Conference_Location

Beijing

ISSN

0271-4302

Print_ISBN

978-1-4673-5760-9

Type

conf

DOI

10.1109/ISCAS.2013.6572091

Filename

6572091