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Face authentication system

An authentication system and facial technology, applied in computer components, image data processing, instruments, etc., can solve the problem of reducing unconsciousness of posture or facial expression in personal authentication

Active Publication Date: 2016-10-12
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult to perform unconscious personal authentication that captures facial images when the user is not paying attention and reduces changes in posture or expression

Method used

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  • Face authentication system
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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0032]

[0033] The face registration device and the face authentication device according to this embodiment, for each of the face image for registration and the face image for authentication, arrange the arrangement of face parts, the size of each face part, the shape of each face part, the size of the outline, and the shape of the outline. deform in a non-linear manner. The face registration device and the face authentication device use a common standard template face image made in advance as a reference face image when deforming.

[0034] By nonlinearly deforming the registration face image and the authentication face image with reference to the template image, it is possible to generate a face image suitable for authentication even from images with different face orientations and positions, thereby improving authentication accuracy. This reduces the influence of changes in the user's face orientation and expression during the capture of the user's face image, and enables...

Embodiment approach 2

[0105]

[0106] The face authentication device 2 of the present embodiment extracts image features from the face image of the authentication target, calculates the distance from the image feature value of the login image, and specifies the login target face image of the login user candidate corresponding to the authentication target. Non-linear deformation is performed on the facial image of the authentication target with reference to the obtained facial image of the registration target. Using the obtained deformed facial image of the authentication object, the image feature value is extracted again, the distance between it and the image feature value of the logged-in user is calculated, and the face authentication result is output.

[0107]

[0108] Figure 9 It is a block diagram showing the logical configuration of the facial image collating unit 19 according to the second embodiment. The facial image collation unit 19 of the present embodiment includes a similarity ca...

Embodiment approach 3

[0128]

[0129] The system according to Embodiment 3 of the present invention uses the face authentication system 100 according to Embodiment 1 or Embodiment 2 to perform entry and exit management, service provision, and the like for users who use houses or facilities. The user enters the venue by performing ID authentication before entering the venue. When entering the venue, the facial registration device obtains the user's facial image and records it in the registered user database. Use the face authentication device to perform entry and exit management after user entry, service provision in the facility, and the like.

[0130]

[0131] Figure 13 It is a block diagram showing the logical structure of this embodiment. This embodiment includes: face authentication system 100, ID authentication device 102, door control device 103, management server 104, door control device 1005, information presentation control device 106, camera 107, camera 108, camera 109, door 110, d...

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Abstract

A face authentication system according to one embodiment of the present invention has: a first face area detection unit for detecting a first face image from a first photographed image photographed by a camera; a first deformation unit for non-linearly deforming the first face image by using a template face image; a face image recording unit for recording the deformed first face image as a registered face image; a second face area detection unit for detecting a second face image from a second photographed image photographed by a camera; a second deformation unit for non-linearly deforming the second face image by using the template face image; and a face image comparison unit for comparing the deformed second face image and the registered face image.

Description

technical field [0001] The present invention relates to a technique for capturing and registering a face image and using it to authenticate a user. Background technique [0002] Anti-terrorism countermeasures and crime countermeasures in public facilities have become important issues year by year. Therefore, attention has been paid to biometric authentication using biometric information (fingerprint, vein, face, etc.), among which expectations for face authentication are rising. In facial authentication technology, since facial images can be captured from a remote place, there are advantages that other biometric authentication technologies do not have, such as the advantage that the subject does not need to authenticate. Therefore, a wide range of applications centering on border management and surveillance and security applications is expected. [0003] In the personal authentication system using facial images, the facial images of individual users are input in advance an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00
CPCG06V40/172G07C9/37G06V40/161
Inventor 黎子盛栗原恒弥清水春美影广达彦
Owner HITACHI LTD
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