Embedding Patient Database in ECG Signal using Slantlet Transform for Holter Monitoring Data Transmission

In the application of telemedicine, ECG signal without any patient details is sent to the Doctor end. Consequently, confusion is arisen between signal and patient’s identity. To avoid this confusion, it is necessary to combine ECG signals with patient confidential information when sent. In this paper, the Slantlet Transform based technique has been introduced to protect patient confidential data. The proposed method allows ECG signal to hide patient confidential data and other physiological information. For embedding patient confidential data in ECG signal, last higher coefficients are replaced with patient confidential information. To evaluate the effectiveness of the proposed technique on the ECG signal and diagnosability measurement of watermarked ECG, some metrics have been used such as Peak Signal to Noise Ratio, Percentage Residual Difference and Bit Error Rate.