Device, fingerprint input device and machine-readable medium
AssigneeNEC Corporation
InventorTeruyuki HIGUCHI
Life of this patent
Estimating the term…
Abstract
A device is not able to detect the forgery of a finger with high accuracy by the comparison of a reflected light image and a transmitted light image that are obtained from the same finger. A determination device is provided with an input means for receiving the reflected light image obtained by photographing a fingerprint of a finger with light reflected from the surface of the finger and the transmitted light image obtained by photographing the fingerprint of the finger with light transmitted through the finger, and a determination means for comparing the reflected light image and the transmitted light image, and outputting a real-forgery determination result of the fingerprint of the finger.
Claims12
A device comprising:
- an optically transparent plate comprising a top surface contactable by a finger;
- a transmitted light source configured to radiate visible light to a fingertip of the finger, the visible light reaching the fingertip without passing through the optically transparent plate, the visible light passing through the fingertip and passing through a surface of the finger in contact with the optically transparent plate;
- a reflected light source configured to radiate visible light that passes through the optically transparent plate and then radiates a surface of the finger in contact with the optically transparent plate;
- at least one memory configured to store instructions;
- and
- at least one processor configured to execute the instructions to:
- acquire a reflected light image based on the visible light from the reflected light source;
- in a case where a color of the reflected light image satisfies a predetermined condition,
- acquire a transmitted light image based on the visible light from the transmitted light source;
- acquire a comparison result by comparing the transmitted light image and the reflected light image;
- and
- output a real-forgery determination result of a fingerprint of the finger using the comparison result.
A method for determining authenticity of a fingerprint using a device,
- the device comprising:
- an optically transparent plate comprising a top surface contactable by a finger;
- a transmitted light source configured to radiate visible light to a fingertip of the finger, the visible light reaching the fingertip without passing through the optically transparent plate, the visible light passing through the fingertip and passing through a surface of the finger in contact with the optically transparent plate;
- a reflected light source configured to radiate visible light that passes through the optically transparent plate and then radiates a surface of the finger in contact with the optically transparent plate;
- the method comprising:
- acquiring a reflected light image based on the visible light from the reflected light source;
- in a case where a color of the reflected light image satisfies a predetermined condition,
- acquiring a transmitted light image based on the visible light from the transmitted light source;
- acquiring a comparison result by comparing the transmitted light image and the reflected light image;
- and
- outputting a real-forgery determination result of a fingerprint of the finger using the comparison result.
Dependencies are inferred from the claim text.