Methods and apparatuses for adaptively updating enrollment database for user authentication
AssigneeSamsung Electronics Co., Ltd.
InventorsJungbae Kim, Seon Min Rhee, Jaejoon Han
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Abstract
A method of adaptively updating an enrollment database is disclosed. The method may include extracting a first feature vector from an input image, the input image including a face of a user, determining whether to enroll the input image in the enrollment database based on the first feature vector, second feature vectors of enrollment images and a representative vector, the second feature vectors of the enrollment images being enrolled in the enrollment database, and the representative vector representing the second feature vectors, and enrolling the input image in the enrollment database based on a result of the determining.
Claims15
A method of adaptively updating an enrollment database, the method comprising:
- authenticating an input image;
- determining whether the input image is an outlier;
- determining whether a feature range of the enrollment database is increased when a feature vector extracted from the input image is enrolled in the enrollment database;
- and
- replacing one of enrollment images in the enrollment database with the input image based on a result of the determining whether the input image is the outlier and the determining whether the feature range of the enrollment database is increased.
A non-transitory computer-readable medium comprising program code that, when executed by a processor, causes the processor to perform
- authenticating an input image;
- determining whether the input image is an outlier;
- determining whether a feature range of an enrollment database is increased when a feature vector extracted from the input image is enrolled in the enrollment database;
- and
- replacing one of enrollment images in the enrollment database with the input image based on the determining whether the input image is the outlier and the determining whether the feature range of the enrollment database is increased.
An adaptive updating apparatus of an enrollment database, the adaptive updating apparatus comprising:
- a memory storing computer-readable instructions;
- and
- one or more processors configured to execute the computer-readable instructions such that the one or more processors is configured to cause the adaptive updating apparatus to,
- authenticate an input image based on the enrollment database,
- determine whether the input image is an outlier,
- determine, in response to determining the input image is not the outlier, whether a feature range of the enrollment database is increased when a feature vector extracted from the input image is enrolled in the enrollment database, and
- replace one of enrollment images in the enrollment database with the input image based on a result of the determining whether the feature range of the enrollment database is increased.
Dependencies are inferred from the claim text.