Device to extract biometric feature vector, method to extract biometric feature vector, and computer-readable, non-transitory medium
AssigneeFujitsu Limited
InventorTomoaki Matsunami
Life of this patent
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Abstract
A device to extract a biometric feature vector includes a memory and a circuitry. The circuitry is configured to obtain a biometric image, to generate a plurality of small region images from the biometric image so that variability of biometric information amounts among the plurality of small region images is equal to or less than a predetermined value, to extract biometric local feature amounts from the small region images and to generate a biometric feature vector by combining the biometric local feature amounts in accordance with a predetermined rule, the biometric feature vector indicating a feature for identifying the biometric image.
Claims12
A device to extract a biometric feature vector comprising:
- a memory device configured to store an enrolled biometric feature vector in advance;
- and
- a circuitry,
- wherein the circuitry is configured:
- to obtain a biometric image;
- to generate a plurality of small region images from the biometric image so that variability of biometric information amounts among the plurality of small region images is equal to or less than a predetermined value;
- to extract biometric local feature amounts from the small region images;
- to generate a biometric feature vector by combining the biometric local feature amounts in accordance with a predetermined rule, the biometric feature vector indicating a feature for identifying the biometric image, the biometric local feature amounts being arranged in a predetermined order in the biometric feature vector;
- and
- to perform comparing of the biometric feature vector with the enrolled biometric feature vector by a distance calculation and determine whether a user is genuine.
A method to extract a biometric feature vector, the method comprising:
- storing an enrolled biometric feature vector in advance;
- obtaining a biometric image;
- generating a plurality of small region images from the biometric image so that variability of biometric information amounts among the plurality of small region images is equal to or less than a predetermined value;
- extracting biometric local feature amounts from the small region images;
- generating a biometric feature vector by combining the biometric local feature amounts in accordance with a predetermined rule, the biometric feature vector indicating a feature for identifying the biometric image, the biometric local feature amounts being arranged in a predetermined order in the biometric feature vector;
- and
- comparing the biometric feature vector with the enrolled biometric feature vector by a distance calculation and determine whether a user is genuine.
A computer readable, non-transitory medium storing a program that causes a computer to execute a process, the process comprising:
- storing an enrolled biometric feature vector in advance;
- obtaining a biometric image;
- generating a plurality of small region images from the biometric image so that variability of biometric information amounts among the plurality of small region images is equal to or less than a predetermined value;
- extracting biometric local feature amounts from the small region images;
- generating a biometric feature vector by combining the biometric local feature amounts in accordance with a predetermined rule, the biometric feature vector indicating a feature for identifying the biometric image, the biometric local feature amounts being arranged in a predetermined order in the biometric feature vector;
- and
- comparing the biometric feature vector with the enrolled biometric feature vector by a distance calculation and determine whether a user is genuine.
Dependencies are inferred from the claim text.