Identification by analysis of physiometric variation
First Claim
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1. A method of identifying a subject, comprising the steps of:
- (a) comparing a first and a second set of biometric parameters extracted from a biometric measurement selected from the group consisting of a heart rate variability measurement and a respiration pattern measurement, wherein (1) the first set of biometric parameters is associated with a first subject, and (2) the second set of biometric parameters is associated with a second subject; and
(b) identifying the first subject as the second subject if the first set and second set correlate, and identifying the first subject as different from the second subject if the first and second sets do not correlate.
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Abstract
Methods involving extraction of information from the inherent variability of physiometrics, including data on cardiovascular and pulmonary functions such as heart rate variability, characteristics of ECG traces, pulse, oxygenation of subcutaneous blood, respiration rate, temperature or CO2 content of exhaled air, heart sounds, and body resonance, can be used to identify individual subjects, particularly humans. Biometric data for use in the methods can be obtained either from contact sensors or at a distance. The methods can be performed alone or can be fused with previous identification algorithms.
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Citations
22 Claims
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1. A method of identifying a subject, comprising the steps of:
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(a) comparing a first and a second set of biometric parameters extracted from a biometric measurement selected from the group consisting of a heart rate variability measurement and a respiration pattern measurement, wherein (1) the first set of biometric parameters is associated with a first subject, and (2) the second set of biometric parameters is associated with a second subject; and
(b) identifying the first subject as the second subject if the first set and second set correlate, and identifying the first subject as different from the second subject if the first and second sets do not correlate. - View Dependent Claims (2, 3, 4)
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5. A method of compiling a database comprising sets of biometric parameters each associated with an individual subject, comprising the steps of:
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(a) acquiring a biometric measurement from a plurality of individual subjects, wherein the biometric measurement is selected from the group consisting of a heart rate variability measurement and a respiration pattern measurement;
(b) analyzing the biometric measurements to extract sets of biometric parameters, wherein each set of biometric parameters is associated with an individual subject; and
(c) compiling the sets of biometric parameters into a database, wherein individual sets of biometric parameters are each correlated with the individual subjects from which the biometric measurements were obtained.
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6. A method for identifying a subject according to a periodic physiological process of the subject, the method comprising the steps of:
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measuring the periodic physiological process for a period of time to generate biometric data, the period of time being sufficient such that the biometric data contains data corresponding to a plurality of cycles of the physiological process;
extracting a plurality of the cycles of the biometric data; and
estimating a first plurality of coefficients based on the plurality of cycles. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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13. A method for identifying a subject according to heart activity of the subject, the method comprising the steps of:
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measuring the heart activity to generate heart activity data; and
identifying the subject according to the heart activity data. - View Dependent Claims (14, 15, 16, 17)
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18. A method for identifying a subject according to respiration of the subject, the method comprising the steps of:
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measuring the respiration to generate respiration data; and
identifying the subject based on the respiration data. - View Dependent Claims (19, 20)
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21. A method for identifying a subject according to at least one of a cardiac and a respiratory physiological process of the subject, the method comprising the steps of:
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measuring the physiological process to generate biometric data;
estimating a coefficient from the biometric data; and
identifying the subject according to the coefficient.
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22. An apparatus for identifying a subject according to at least one of a cardiac and a respiratory physiological process of the subject, the apparatus comprising:
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means for measuring the physiological process to generate biometric data; and
means for identifying the subject according to the biometric data.
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Specification