American Journal of Signal Processing
p-ISSN: 2165-9354 e-ISSN: 2165-9362
2012; 2(2): 23-29
doi: 10.5923/j.ajsp.20120202.04
M. M. T. Abdelraheem , Hany Selim , Tarik Kamal Abdelhamid
Electrical Engineering, Assiut University, Assiut, Egypt
Correspondence to: M. M. T. Abdelraheem , Electrical Engineering, Assiut University, Assiut, Egypt.
Email: | ![]() |
Copyright © 2012 Scientific & Academic Publishing. All Rights Reserved.
In this paper a new approach in human identification is introduced, in which the use of the Vectorcardiogram (VCG) main loop as a biometric feature is investigated. The advantage of using VCG over the Electrocardiogram (ECG) is that the shape of the VCG is independent of the heart rate. A test set of 550 VCG’s recorded from 22 healthy individuals measured at different times and with a wide range of heart rate values is used to validate the system. The proposed system uses only the main loop of the VCG for identification. Two different algorithms are used. In the first one, coefficients from specially developed descriptor (the Equal Distance descriptor) are used for identification, and in the second, selected Fourier Descriptor coefficients of the main loop of the VCG are used as biometric data. In both methods Feed Forward Neural Networks are used as classifiers giving identification rates of 99.454% and 95% respectively.
Keywords: Biometrics, Electrocardiogram (ECG), Feature Extraction, Human Identification, VCG, Neural Networks
![]() | Figure 1. VCG construction from lead I and lead aVF |
![]() | Figure 2. The change of Heart Rate for each subject |
![]() | Figure 3. VCG contour before reallocating (a), and after reallocating points (b) |
![]() | Figure 4. VCG complex contour and the corresponding equal distance descriptor coefficients |
![]() | Figure 5. (a)VCG main loop contour (b) The corresponding equal distance Descriptor (c) The corresponding Fourier Descriptor |
![]() | (1) |
![]() | (2) |
![]() | Figure 6. VCG contours for each subject plotted on each other for the all 22 subjects |
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