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Method for authenticating human-face identity based on three-dimensional model reconstruction

A three-dimensional model, identity authentication technology, applied in the field of face identity authentication based on three-dimensional model reconstruction, can solve the problems of unsuitable promotion and application, long acquisition time, etc.

Inactive Publication Date: 2011-11-23
NANJING UNIV
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Problems solved by technology

These methods all need to obtain 3D faces first, but because the acquisition of 3D faces requires relatively expensive equipment such as laser scanners and structured light, and the acquisition time is relatively long, it is not suitable for promotion and application.

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  • Method for authenticating human-face identity based on three-dimensional model reconstruction
  • Method for authenticating human-face identity based on three-dimensional model reconstruction
  • Method for authenticating human-face identity based on three-dimensional model reconstruction

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Embodiment Construction

[0049] Such as figure 1 As shown, the present invention discloses a face identity authentication method based on three-dimensional model reconstruction, which specifically includes the following steps:

[0050] Step 1, the nonlinear optimization algorithm based on the three-dimensional deformation base reconstructs the three-dimensional face from the ID card photo, including the following steps:

[0051] Step 11, using the active shape model (ASM) method to locate the face feature points from the ID card photo: locate the face area from the ID card photo, and locate the ID card face area based on the location such as figure 2 (the ORL face database created by the AT&T laboratory of the University of Cambridge contains a total of s1 to s40 groups of face images, and the face image of the person comes from the face feature points shown in the first picture of the s1 group);

[0052] Step 12, using non-rigid body shape and motion estimation method to construct three-dimensional...

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Abstract

The invention discloses a method for authenticating human-face identity based on three-dimensional model reconstruction. In the method for authenticating human-face identity, three-dimensional human-face models are reconstructed according to a photo on an identity card and a real-time video respectively, and a three-dimensional geometrical characteristic matching strategy is used for authenticating human-face identity. The method for authenticating human-face identity comprises the steps of: (1) reconstructing a three-dimensional human-face model according to the photo on the identity card byadopting a non-linear optimization algorithm based on a three-dimensional deformation base; (2) reconstructing a three-dimensional human-face model according to a real-time video by adopting a methodfor recovering a non-rigid body three-dimensional shape from the movement; and (3) authenticating through three-dimensional human-face matching according to the geometrical characteristics. The method for authenticating human-face identity can be used for supporting a user to authenticate by a second-generation identity card and a video of the human-face, greatly improves the contrast accuracy and efficiency, and enables the method for portrait contrast by using a computer to become a feasible technology.

Description

technical field [0001] The invention relates to a processing method for establishing a face model and feature matching in the technical field of computer graphics and imaging, in particular to a face identity authentication method based on three-dimensional model reconstruction. Background technique [0002] With the rapid development of computer technology and biomedical engineering technology, biometric technology, which uses human biological characteristics to identify personal identities, has become the preferred method of verification. Using face to authenticate identity is the most commonly used means of identity confirmation in people's daily life, and it is also one of the most popular pattern recognition research topics at present. Although the accuracy of face recognition is lower than that of iris recognition and fingerprint recognition, because it is non-contact and non-invasive, people do not have any rejection of this technology, so using face for identity auth...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06T17/00A61B5/117A61B5/1171
Inventor 孙正兴杨克微李毅李骞
Owner NANJING UNIV
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