Identity identification method based on lid speech characteristic

A technology of identity authentication and lip language, applied in the field of information security, can solve the problems of lack of identity authentication mechanism, lack of expression of lip language features with identity discrimination, insufficient accuracy of lip language feature extraction, etc.

Inactive Publication Date: 2007-10-03
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages are: 1) the extraction accuracy of lip language features is insufficient; 2) the expression of lip language featu

Method used

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  • Identity identification method based on lid speech characteristic
  • Identity identification method based on lid speech characteristic
  • Identity identification method based on lid speech characteristic

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Embodiment Construction

[0029] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.

[0030]As shown in Figure 1, the present embodiment at first carries out the automatic extraction of lip language feature, mainly comprises: 1) the geometric feature of lips, promptly describes the length and width information of lip area; 2) the outline feature of lips, promptly describes the contour shape of lips 3) Internal features of the lip area, which describe information such as teeth and tongue that may be contained inside the lips; 4) Spectral features of the lips, which describe the characteristics of lip movement in the frequency domain. Then, through the m...

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Abstract

The present invention relates to a speechmaker identity authentication method based on lip movement in the field of biological characteristics and mode identification technology. Said method includes the following steps: inputting lip image sequence, dividing lip region based on improved fuzzy aggregation algorithm, modeling lip region based on point drive and extracting various lip characteristics based on lip region model.

Description

technical field [0001] The invention relates to a method in the technical field of information security, in particular to an identity authentication method based on lip language features. Background technique [0002] With the advent of the information society, the importance of system security is becoming more and more obvious. Accurate identity authentication technology is a necessary prerequisite for most system security. Traditional identity authentication methods are often based on specific items (such as keys, ID cards, smart cards, etc.) or specific knowledge (such as passwords, ID numbers, etc.). The former has the problem of being easily lost or damaged, while the latter has the problem of being easily forgotten or cracked. More importantly, since the authentication information of these identities can often be copied and shared, the system cannot use this information to determine the real identity of the user. Therefore, when these traditional identification meth...

Claims

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Application Information

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IPC IPC(8): G10L15/24G06K9/78G06K9/46
Inventor 王士林刘功申林祥李翔李生红
Owner SHANGHAI JIAO TONG UNIV
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