摘要:
A basic idea of the present invention is to selectively employ one of at least two different feature extraction processes when generating a biometric template of an individual. An individual offers a physiological property, such as a fingerprint, an iris, an ear, a face, etc., from which biometric data can be derived, to a sensor of an enrollment authority. In the following, the property to be discussed will be fingerprints, even though any suitable biometric property may be used. From the fingerprint, a positional reference point of the biometric data is derived. The derivation of the positional reference point may be accomplished using any appropriate method out of a number of known methods. Such a reference point could be the location of a core, a delta, a weighted average of minutiae coordinates, or alike. Typically, the reference point includes a core of a fingerprint expressed as a three-dimensional coordinate denoted by means of xr, yr, and angle αr. A contribution indicator is calculated for the derived positional reference point, and it is determined whether the derived positional reference point can be considered reliable. Depending on the reliability of the derived reference point, one of the two different feature extraction processes is selected; either the first feature set is extracted using a method which is invariant of the derived reference point, or a method is used taking into account the derived reference point. The better the estimation of the reference point is, the more reliable the reference point-dependent extraction method is. Finally, the biometric template is generated using the extracted first feature set.
摘要:
The invention relates to a method for generating a representation of a finger print minutiae information. The invention also relates to a method for generating a representation of a finger print for biometric template protection purposes Biometric template protection techniques provide technological means to protect the privacy of biometric reference information stored in biometric. systems These methods stand in sharp contrast to approaches where biometric information is protected only by legislation and procedures around storage facilities. These systems are not reliable as they are susceptible to human and procedural errors. Template protection guarantees the protection of biometric information without the assumption that individuals are trusted or procedures are properly implemented.
摘要:
A basic idea of the present invention is to selectively employ one of at least two different feature extraction processes when generating a biometric template of an individual. An individual offers a physiological property, such as a fingerprint, an iris, an ear, a face, etc., from which biometric data can be derived, to a sensor of an enrolment authority. In the following, the property to be discussed will be fingerprints, even though any suitable biometric property may be used. From the fingerprint, a positional reference point of the biometric data is derived. The derivation of the positional reference point may be accomplished using any appropriate method out of a number of known methods. Such a reference point could be the location of a core, a delta, a weighted average of minutiae coordinates, or alike. Typically, the reference point includes a core of a fingerprint expressed as a three-dimensional coordinate denoted by means of xr, yr, and angle αr. A contribution indicator is calculated for the derived positional reference point, and it is determined whether the derived positional reference point can be considered reliable. Depending on the reliability of the derived reference point, one of the two different feature extraction processes is selected; either the first feature set is extracted using a method which is invariant of the derived reference point, or a method is used taking into account the derived reference point. The better the estimation of the reference point is, the more reliable the reference point-dependent extraction method is. Finally, the biometric template is generated using the extracted first feature set.
摘要:
The invention relates to a method for verifying the identity of an individual by employing biometric data features associated with the individual, which method provides privacy of said biometric data features, comprising at least the steps of: a) for enrollment purposes deriving a first biometric template from at least a first set of first biometric data features associated with said individual, and b) for identity verifying purposes deriving a further biometric template from at least a further set of said first biometric data features associated with said individual, and c) comparing said further biometric template with said first biometric template. The invention also relates to a system for verifying the identity of an individual by employing biometric data features associated with the individual, which system at least comprises: an enrollment means and a verifying means, wherein said enrollment means are arranged in deriving a first biometric template data, said first biometric template data being secret and associated with a first set of first biometric data features of said individual, and in receiving a further set of first biometric data features of said individual, and in deriving a further biometric template data associated with said further set of first biometric data, and wherein said verifying means are arranged in comparing the first biometric template data with the further biometric template data to check for correspondence, wherein the identity of the individual is verified if correspondence exists.
摘要:
The invention relates to a system for verifying the identity of an individual by employing biometric data features associated with the individual, which system comprises at least one or more hardware components, an enrollment means, and a verifying means, wherein said enrollment means are arranged in deriving a first biometric template data, said first biometric template data being secret and associated with a first set of first biometric data features of said individual, and in receiving a further set of first biometric data features of said individual, and in deriving a further biometric template data associated with said further set of first biometric data, and wherein said verifying means are arranged in comparing the first biometric template data with the further biometric template data to check for correspondence, wherein the identity of the individual is verified if correspondence exists. The invention aims to provide a solution to the above identified drawbacks and thereto at least one of said hardware components is provided with at least one component specific data feature associated therewith and wherein said enrollment means are arranged in associating at least one of said component specific data features with said biometric template data.
摘要:
The invention relates to a method for generating a representation of a finger print minutiae information. The invention also relates to a method for generating a representation of a finger print for biometric template protection purposes Biometric template protection techniques provide technological means to protect the privacy of biometric reference information stored in biometric. systems These methods stand in sharp contrast to approaches where biometric information is protected only by legislation and procedures around storage facilities. These systems are not reliable as they are susceptible to human and procedural errors. Template protection guarantees the protection of biometric information without the assumption that individuals are trusted or procedures are properly implemented.
摘要:
The invention relates to a method for verifying the identity of an individual by employing biometric data features associated with the individual, which method provides privacy of said biometric data features, comprising at least the steps of: a) for enrolment purposes deriving a first biometric template from at least a first set of first biometric data features associated with said individual, and b) for identity verifying purposes deriving a further biometric template from at least a further set of said first biometric data features associated with said individual, and c) comparing said further biometric template with said first biometric template. The invention also relates to a system for verifying the identity of an individual by employing biometric data features associated with the individual, which system at least comprises: an enrolment means and a verifying means, wherein said enrolment means are arranged in deriving a first biometric template data, said first biometric template data being secret and associated with a first set of first biometric data features of said individual, and in receiving a further set of first biometric data features of said individual, and in deriving a further biometric template data associated with said further set of first biometric data, and wherein said verifying means are arranged in comparing the first biometric template data with the further biometric template data to check for correspondence, wherein the identity of the individual is verified if correspondence exists.
摘要:
The invention relates to a system for verifying the identity of an individual by employing biometric data features associated with the individual, which system comprises at least one or more hardware components, an enrolment means, and a verifying means, wherein said enrolment means are arranged in deriving a first biometric template data, said first biometric template data being secret and associated with a first set of first biometric data features of said individual, and in receiving a further set of first biometric data features of said individual, and in deriving a further biometric template data associated with said further set of first biometric data, and wherein said verifying means are arranged in comparing the first biometric template data with the further biometric template data to check for correspondence, wherein the identity of the individual is verified if correspondence exists. The invention aims to provide a solution to the above identified drawbacks and thereto at least one of said hardware components is provided with at least one component specific data feature associated therewith and wherein said enrolment means are arranged in associating at least one of said component specific data features with said biometric template data.
摘要:
A lighting system and a method for a operating a lighting system, enabling to obtain an identification tag (7) comprised in lighting design data (5) directly from an output beam (3), i.e. from the emitted light of the at least one lighting unit (2). It is thus possible to trace any unauthorized distribution of a lighting design by monitoring the emitted light without the need to directly access the controller or any other part of the lighting system.
摘要:
A method of generating a watermark signal, embedding the watermark signal within a multimedia signal, and subsequently detecting the watermark signal is described. The watermark signal is the sum of two sequences of values, the second sequence of values being a circularly shifted version of the first sequence.