Individual verification apparatus, individual verification method and computer-readable recording medium
First Claim
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1. An individual verification apparatus, comprising:
- a camera configured to take a face image in an image region in which an individual is irradiated from a light source and observed from a fixed line-of-sight direction, a direction of the light source varying with time;
a database configured to associate the face image by the camera with unique information of the individual, the face image having a first brightness value thereof and a first light reception direction thereof in the image region; and
a processing unit coupled to a memory and the database, the processing unit facilitating execution of instructions to perform operations comprising;
correcting at least one of a second brightness value and a second light reception direction of image data to match the first brightness value and the first light reception direction, the image data stored in the memory for verification, the second brightness value and the second light reception direction being obtained at a timing different from another timing at which the first brightness value and the first light reception direction are obtained, respectively, andverifying the individual using a face part in the image data for verification and the face image stored in the database.
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Abstract
Certain embodiments provide an individual verification apparatus, comprising: a database configured to associate a face image having the brightness and the light reception direction of an image region with the personal information of an individual; a correction section configured to carry out a correction operation using a correction amount pre-stored for image data for verification having another brightness and another light reception direction; and a verification section configured to verify the individual using the face part in the image data for verification which is corrected in at least one of brightness and light reception direction and the face image in the database.
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Citations
10 Claims
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1. An individual verification apparatus, comprising:
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a camera configured to take a face image in an image region in which an individual is irradiated from a light source and observed from a fixed line-of-sight direction, a direction of the light source varying with time; a database configured to associate the face image by the camera with unique information of the individual, the face image having a first brightness value thereof and a first light reception direction thereof in the image region; and a processing unit coupled to a memory and the database, the processing unit facilitating execution of instructions to perform operations comprising; correcting at least one of a second brightness value and a second light reception direction of image data to match the first brightness value and the first light reception direction, the image data stored in the memory for verification, the second brightness value and the second light reception direction being obtained at a timing different from another timing at which the first brightness value and the first light reception direction are obtained, respectively, and verifying the individual using a face part in the image data for verification and the face image stored in the database. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An individual verification method, comprising:
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generating, during a first timing, a reference brightness value and a reference light reception direction of a background image in an image region in which an individual is irradiated from a light source and observed from a fixed line-of-sight direction, a direction of the light source varying with time; correcting, within a second timing, a face image in the image region for registration using the reference brightness value and the reference light reception direction, and registering thus corrected face image for registration having the reference brightness value and the reference light reception direction in a database, the face image being associated with unique information of the individual; correcting, during a third timing different from the second timing at which the corrected face image for registration is registered in the database, image data for verification, of which the image data has a second brightness value thereof and a second light reception direction thereof, to generate thus corrected image data for verification having the reference brightness value and the reference light reception direction; and verifying the individual using a face part in the image data for verification and the face image in the database.
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10. A non-transitory computer readable recording medium, the medium storing a program causing a processor to execute the following processing:
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generating a reference brightness value and a reference light reception direction of a background image in an image region in which an individual is irradiated from a light source observed from a fixed line-of-sight direction, a direction of the light source varying with time; correcting a face image in the image region for registration using the reference brightness value and the reference light reception direction, and accessing an address of a database to register thus corrected face image for registration having the reference brightness value and the reference light reception direction in the database, the face image being associated with unique information of the individual; correcting image data for verification, of which the image data has a second brightness value thereof and a second light reception direction thereof which are obtained at a timing different from another timing at which the reference brightness value and the reference light reception direction are obtained, respectively, to generate thus corrected image data for verification having the reference brightness value and the reference light reception direction; and verifying the individual using a face part in the image data for verification and the face image in the database.
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Specification