Reversible Data Hiding Scheme for ECG Signal

Naghma Tabassum, M. Izharuddin
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引用次数: 3

Abstract

In telemedicine system, remote electrocardiography (ECG) monitoring systems are widely used to examine the cardiac health of a patient. So, huge amount of ECG data is collected in real time and send over the network along with the patient's identity to his/her doctor who is geographically far away. In that scenario, it is very important to protect patient's confidential information. The Health Insurance Portability and Accountability Act (HIPAA) of 1996 in US mandates that confidential and private information related to patients be protected. To serve this purpose a novel reversible watermarking algorithm with high embedding capacity based on wavelet transform has been developed. The proposed reversible data hiding scheme allows ECG signals to hide its corresponding patient's confidential data and being reversible the original signal can be completely restored at the same time. Performance has been evaluated in terms of ECG signal distortion and embedding capacity. Experimental results show that the original ECG signal is recovered exactly after the extraction of watermarked data.
心电信号的可逆数据隐藏方案
在远程医疗系统中,远程心电图监测系统被广泛用于检查患者的心脏健康状况。因此,大量的心电图数据被实时收集,并通过网络与患者的身份一起发送给地理位置较远的医生。在这种情况下,保护患者的机密信息是非常重要的。美国1996年的《健康保险流通与责任法案》(HIPAA)要求保护与患者有关的机密和私人信息。为此,提出了一种基于小波变换的高嵌入容量可逆水印算法。所提出的可逆数据隐藏方案可以使心电信号隐藏相应患者的机密数据,同时由于其是可逆的,可以完全恢复原始信号。从心电信号失真和嵌入容量两方面对其性能进行了评价。实验结果表明,水印提取后的心电信号能够准确地恢复原始信号。
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