| CPC G06V 40/67 (2022.01) [G06F 18/22 (2023.01); G06T 7/194 (2017.01); G06V 10/143 (2022.01); G06V 10/145 (2022.01); G06V 10/60 (2022.01); G02B 5/20 (2013.01); G06T 2207/10048 (2013.01); G06T 2207/20081 (2013.01); G06T 2207/20084 (2013.01)] | 15 Claims |
|
1. A biometric authentication device, comprising:
a processor coupled to a memory storing instructions to permit the processor to function as:
an image capturing unit that captures images of a living body through an optical filter that transmits light in a band including a first wavelength that irradiates the living body, light in a band including a second wavelength that is different from the first wavelength that irradiates the living body, and light in a band including a third wavelength that is different from the first and second wavelengths caused by an external environment, and blocks other wavelengths;
a spectroscopic processing unit that separates and acquires an image of a light intensity of the first wavelength, an image of the light intensity of the second wavelength, and an image of the light intensity of the third wavelength from an obtained image of the living body;
a background removal unit that extracts a background region from the image of the light intensity of the third wavelength and removes the background region from the images of the light intensity of the first and second wavelengths, respectively; and
an authentication processing unit that extracts various features of the living body from the images of the light intensity of the first and second wavelengths with a background area removed, matches them with the biometric features for each individual registered in advance, calculates a degree of similarity for each biometric feature, and performs biometric authentication to identify the individual based on the degree of similarity of the various biometric features.
|