Person recognition method and apparatus
First Claim
1. A person recognition method for comparing a photographic image showing a face of a person to be recognized with face images of a plurality of registrants registered in a database, the person recognition method comprising the steps of:
- determining a date of taking a photograph of a person to be recognized;
subtracting a date of taking a registrant'"'"'s face image from the date of taking the photographic image of the person to be recognized, and calculating a number of elapsed years from the date of taking the registrant'"'"'s face image;
selecting one of a plurality of image comparison methods for comparing the photographic image with the registrant'"'"'s face image in accordance with the number of elapsed years;
comparing the photographic image with the registrant'"'"'s face image by the selected image comparison method, and calculating a degree of resemblance between the photographic image and the registrant'"'"'s face image using the selected image comparison method; and
displaying personal data of the one or more registrants, the personal data with the higher degree of resemblance being given a high priority to be displayed.
1 Assignment
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Accused Products
Abstract
Subtracting the date of taking a registrant'"'"'s face image from the date of taking a photographic image of a person to be recognized, the number of elapsed years Y of the registrant'"'"'s face image is calculated. If Y<5, an unsophisticated image comparator is selected. If 5≦Y<10, a first face parts comparator is selected to calculate the degree of resemblance between the photographic image and the registrant'"'"'s face image more precisely than the unsophisticated image comparator. If 10≦Y, a second face parts comparator is selected. If the face image is a child'"'"'s, the second face parts comparator compares the photographic image not only with the child'"'"'s face image but also with his/her cognate'"'"'s face image. After the photographic image is compared with every registrant'"'"'s face image, the personal data of the top four registrants having the highest degree of resemblance is displayed on an LCD.
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Citations
13 Claims
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1. A person recognition method for comparing a photographic image showing a face of a person to be recognized with face images of a plurality of registrants registered in a database, the person recognition method comprising the steps of:
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determining a date of taking a photograph of a person to be recognized; subtracting a date of taking a registrant'"'"'s face image from the date of taking the photographic image of the person to be recognized, and calculating a number of elapsed years from the date of taking the registrant'"'"'s face image; selecting one of a plurality of image comparison methods for comparing the photographic image with the registrant'"'"'s face image in accordance with the number of elapsed years; comparing the photographic image with the registrant'"'"'s face image by the selected image comparison method, and calculating a degree of resemblance between the photographic image and the registrant'"'"'s face image using the selected image comparison method; and displaying personal data of the one or more registrants, the personal data with the higher degree of resemblance being given a high priority to be displayed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A person recognition apparatus for comparing a photographic image showing a face of a person to be recognized with face images of a plurality of registrants registered in a database, and displaying personal data of the registrant having the face image resembling the photographic image, the person recognition apparatus comprising:
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a unit to input a date of taking of a photograph of a person to be recognized; an elapsed year calculator for subtracting a date of taking a registrant'"'"'s face image from a date of taking the photographic image of the person to be recognized, and calculating a number of elapsed years from the date of taking the registrant'"'"'s face image; a comparison method selector for selecting one of a plurality of image comparison methods for comparing the photographic image with the registrant'"'"'s face image in accordance with the number of elapsed years; an image comparator for comparing the photographic image with the registrant'"'"'s face image by the selected image comparison method, and calculating a degree of resemblance between the photographic image and the registrant'"'"'s face image using the selected comparison method; and a display for displaying the personal data of the one or more registrants in descending order of the degree of resemblance. - View Dependent Claims (13)
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Specification