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Pulse Active Transform (PAT): A non-invertible transformation with application to ECG biometric authentication

Bin Safie, Sairul Izwan and Nurfazira, H and Azavitra, Z and Soraghan, John and Petropoulakis, Lykourgos (2014) Pulse Active Transform (PAT): A non-invertible transformation with application to ECG biometric authentication. In: Region 10 Symposium, Kuala Lumpur, Malaysia. IEEE, 667 - 671. ISBN 978-1-4799-2028-0

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This paper presents a new transformation technique called the Pulse Active transform (PAT). The PAT uses a series of harmonically related periodic triangular waveforms to decompose a signal into a finite set of pulse active features. These features incorporate the signal's information in the pulse active domain, and which are subsequently processed for some desired application. PAT is non-invertible thus ensuring complete security of the original signal source. In this paper PAT is demonstrated on an ECG signal and used for biometric authentication. The new transformation technique is tested on 112 PTB subjects. It is shown in this paper that the new transformation has a superior performance compared to the conventional characteristic based feature extraction methods with additional security to avoid recovery of the original ECG.