Personal authentication apparatus and personal authentication method

Abstract

A personal authentication apparatus including a facial region extraction which extracts an image of a facial region of a person obtained from image sensing input unit, a guide unit which guides motion of the person of interest, a feature amount extraction unit which extracts the feature amount of a face from the image of the facial region extracted by the facial region extraction unit while the motion is guided by the guide unit, a dictionary registration unit which registers the feature amount extracted by the feature amount extraction unit as a feature amount of the person of interest, and an authentication unit which authenticates the person of interest in accordance with the similarity between the feature amount extracted by the feature amount extraction unit, and a feature amount which is registered by the dictionary registration unit.

1 . A personal authentication apparatus comprising:
 an image sensing input unit configured to sense a person and input a first image at registration and a second image at aunthentication;   a facial region extraction unit configured to extract first and second facial images from the first and second images input by the image sensing input unit;   a guide unit configured to display a guidance of an image sensing condition of the person at registration;   a feature amount extraction unit configured to extract first and second feature amounts of the first and second facial images;   a dictionary registration unit configured to register the first feature amount; and   an authenticating unit configured to perform authentication by determining a similarity between the first feature amount registered by the dictionary registration unit and the second feature amount.   
   
   
       2 . The apparatus according to  claim 1 , further comprising:
 an image sensing condition extraction unit configured to extract an image sensing condition of the person at registration on the basis of a size or luminance of the first facial image, and   wherein the guide unit displays the guidance so that the image sensing condition extracted by the image sensing condition extraction unit falls within a predetermined value range.   
   
   
       3 . The apparatus according to  claim 1 , wherein the guide unit displays a character which relaxes the person and guides a movement of the person. 
   
   
       4 . The apparatus according to  claim 1 , wherein the guide unit displays the first facial image and a guide mark to which the person is to be moved. 
   
   
       5 . A personal authentication method comprising:
 sensing a person and inputting a first image at registration and a second image at authentication;   extracting first and second facial images from the first and second images input by the inputting;   displaying a guidance of an image sensing condition of the person at registration;   extracting first and second feature amounts of the first and second facial images;   registering the first feature amount; and   performing authentication by determining a similarity between the first feature amount registered by the registering and the second feature amount.   
   
   
       6 . The method according to  claim 5 , further comprising:
 extracting an image sensing condition of the person at registration on the basis of a size or luminance of the first facial image, and   displaying the guidance so that the image sensing condition extracted by the extracting falls within a predetermined value range.   
   
   
       7 . The method according to  claim 5 , further comprising:
 displaying a character which relaxes the person and guides a movement of the person.   
   
   
       8 . The method according to  claim 5 , further comprising:
 displaying the first facial image and a guide mark to which the person is to be moved.