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An identity authentication method based on ultrasonic lip recognition

An identity authentication and ultrasonic technology, applied in the field of identity authentication, to achieve the effect of low deployment cost, efficient identity authentication, and expansion of application scenarios

Active Publication Date: 2021-07-09
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an identity authentication method based on ultrasonic lip recognition, which can solve the security loopholes in the existing facial recognition technology and achieve efficient authentication.

Method used

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  • An identity authentication method based on ultrasonic lip recognition
  • An identity authentication method based on ultrasonic lip recognition
  • An identity authentication method based on ultrasonic lip recognition

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Embodiment Construction

[0025] Such as figure 1 Shown is an example of an application scenario of the present invention. First, after the mobile terminal obtains the access information sent by each user to the mobile terminal, it transfers the key information synchronously transmitted by each user to the user database. The database identifies and matches the key information of all current users, and the user with the highest matching degree If the identity verification is passed, the user is the legal user of the mobile terminal. Other users are illegal users, and the mobile terminal keeps it in a locked state.

[0026] Such as figure 2 Shown is the overall structure diagram of the mobile terminal of the present invention. The invention provides an identity authentication technology and method for lip recognition based on ultrasonic waves. According to the function, it is divided into two modules: information collection and unlocking control. The information collection module includes a signal ...

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Abstract

An identity authentication method based on ultrasonic lip recognition, comprising the following steps: (1) a signal transmitting source sends an ultrasonic signal, and a signal receiving source receives a reflected signal from the mouth; (2) lip language feature extraction is performed on the collected reflected signal , the extracted lip features include a spectrum feature corresponding to a lip event and the user's dynamic lip contour features; (3) identifying and authenticating the user according to the lip features extracted in step (2). The beneficial effects of the present invention are: on the basis of no need for additional hardware customization, the characteristic parameters of identity authentication are obtained by using the ability of ultrasonic sensing, the deployment cost is low, and the application scene of ultrasonic technology in mobile terminals is expanded; the use of users to express the same lip language The difference in behavior habits at the time of the event, combined with biological characteristics, solves the security loopholes in existing technologies such as facial recognition and fingerprint recognition, and can achieve efficient identity authentication.

Description

technical field [0001] The invention relates to the technical field of identity authentication, in particular to an identity authentication method based on ultrasonic lip recognition. Background technique [0002] In today's information society, accurate identity authentication technology is a necessary prerequisite for system security. Traditional identity authentication technologies are often based on characteristic content (text password, ID card ID) or customized identification and authentication items (ID card, student ID card). However, the former is easy to be copied and stolen by certain technical means, while the latter is often lost and damaged. Therefore, it is necessary to introduce biological feature information and the learning of user behavior habits into the identity authentication system. On the other hand, existing biological feature information, such as facial recognition, fingerprint recognition, and voiceprint recognition, can be recorded by other mali...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/32G06F21/31
CPCG06F21/31G06F21/32
Inventor 王晓亮谭佳瑶陆桑璐
Owner NANJING UNIV
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