USER AUTHENTICATION METHOD AND APPARATUS BASED ON ELECTROCARDIOGRAM (ECG) SIGNAL
First Claim
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1. A user authentication apparatus comprising:
- an electrocardiogram (ECG) waveform acquirer configured to acquire an authentication ECG waveform of a user to be authenticated;
a filter configured to filter the authentication ECG waveform using a Kalman filter by applying a reference model parameter extracted from a reference ECG waveform to the Kalman filter; and
an authenticator configured to compare the filtered authentication ECG waveform and the reference ECG waveform, and determine whether the filtered authentication ECG waveform corresponds to the reference ECG waveform based on a result of the comparing.
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Abstract
A user authentication apparatus includes an electrocardiogram (ECG) waveform acquirer configured to acquire an authentication ECG waveform of a user to authenticate the user; a filter configured to filter the authentication ECG waveform using a Kalman filter by applying a reference model parameter extracted from a reference ECG waveform to the Kalman filter; and an authenticator configured to compare the filtered ECG waveform and the reference ECG waveform, and determine whether the filtered authentication ECG waveform corresponds to the reference ECG waveform based on a result of the comparing.
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Citations
28 Claims
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1. A user authentication apparatus comprising:
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an electrocardiogram (ECG) waveform acquirer configured to acquire an authentication ECG waveform of a user to be authenticated; a filter configured to filter the authentication ECG waveform using a Kalman filter by applying a reference model parameter extracted from a reference ECG waveform to the Kalman filter; and an authenticator configured to compare the filtered authentication ECG waveform and the reference ECG waveform, and determine whether the filtered authentication ECG waveform corresponds to the reference ECG waveform based on a result of the comparing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A user registration apparatus comprising:
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an electrocardiogram (ECG) waveform acquirer configured to acquire a registration ECG waveform of a user to register the user; an ECG waveform extractor configured to extract a representative ECG waveform from the registration ECG waveform based on an R peak; a model parameter extractor configured to extract a first model parameter by modeling the representative ECG waveform; a filter configured to filter the registration ECG waveform using a Kalman filter by applying the first model parameter to the Kalman filter; and a feature point extractor configured to extract a plurality of feature points from the filtered registration ECG waveform. - View Dependent Claims (18, 19, 20, 21)
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22. A user authentication apparatus comprising:
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a register configured to extract a first model parameter by modeling a representative electrocardiogram (ECG) waveform extracted from a registration ECG waveform, filter the registration ECG waveform using a Kalman filter by applying the first model parameter to the Kalman filter, and extract a plurality of feature points from the filtered registration ECG waveform; and an authenticator configured to filter an authentication ECG waveform using the Kalman filter by applying a second model parameter included in the feature points to the Kalman filter, compare the filtered authentication ECG waveform and the filtered registration ECG waveform, and determine whether the filtered authentication ECG waveform corresponds to the registration ECG waveform based on a result of the comparing.
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23. A user authentication method comprising:
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acquiring an authentication electrocardiogram (ECG) waveform of a user to be authenticated; filtering the authentication ECG waveform using a Kalman filter by applying a reference model parameter extracted from a reference ECG waveform to the Kalman filter; comparing the filtered authentication ECG waveform and the reference ECG waveform; and determining whether the filtered authentication ECG waveform corresponds to the reference ECG waveform based on a result of the comparing.
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24. A user registration method comprising:
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acquiring a registration electrocardiogram (ECG) waveform of a user to be authenticated; extracting a representative ECG waveform from the registration ECG waveform based on an R peak; extracting a model parameter by modeling the representative ECG waveform; filtering the registration ECG waveform using a Kalman filter by applying the model parameter to the Kalman filter; and extracting a plurality of feature points from the filtered registration ECG waveform.
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25. A user authentication method comprising:
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extracting a first model parameter by modeling a representative electrocardiogram (ECG) waveform extracted from a registration ECG waveform; filtering the registration ECG waveform using a Kalman filter by applying the first model parameter to the Kalman filter; extracting a plurality of feature points from the filtered registration ECG waveform; filtering an authentication ECG waveform using the Kalman filter by applying a second model parameter included in the feature points to the Kalman filter; comparing the filtered authentication ECG waveform and the filtered registration ECG waveform; and determining whether the filtered authentication ECG waveform corresponds to the filtered registration ECG waveform based on a result of the comparing.
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26. A user authentication method comprising:
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acquiring an authentication electrocardiogram (ECG) waveform of a user to be authenticated; filtering the authentication ECG waveform using a predictive filter adjusted based on a characteristic extracted from a reference ECG waveform of a pre-registered user; comparing the filtered authentication ECG waveform and the reference ECG waveform; and determining whether the user is the pre-registered user based on a result of the comparing. - View Dependent Claims (27, 28)
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Specification