Lip language recognition identity verification method and device

An identity verification method, lip language technology, applied in the field of information processing, can solve problems such as inaccurate recognition, achieve the effect of improving accuracy and enriching identity verification methods
CN107437019AInactive Publication Date: 2017-12-05GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
Publication Date
2017-12-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a lip language recognition identity verification method and device. The method comprises the steps that structural light is projected to the face of a user on whom lip language recognition is performed, and a plurality of structural light images obtained after current user face modulation are photographed according to a preset collection period; phase information corresponding to the lip portion position pixel in the multiple structural light images is demodulated, and a plurality of three-dimensional lip images are obtained; corresponding lip-shaped feature information and lip shape difference information of the multiple three-dimensional lip images according to time sequence changes are extracted from the multiple three-dimensional lip images; lip shape feature information and lip shape difference information are matched by applying preset lip language model base sample feature information, and lip language information corresponding to the successfully-matched sample feature information is obtained; the lip language information and the preset verification information are compared; if the comparison result is that the lip language information and the preset verification information are the same, the user identity is verified, and the corresponding operation is legally authorized. Accordingly, the identity verification modes are enriched, and the identity verification accuracy is improved.
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Description

Technical field

[0001] The present invention relates to the technical field of information processing, in particular to an identity verification method and device for lip recognition. Background technique

[0002] With the development of Internet technology, human language recognition technology has been widely used in many fields such as industry, home appliances, communications, automotive electronics, medical care, and home service industries.

[0003] In the related art, human language recognition is performed based on the two-dimensional image of the lips of the human face, that is, the extracted two-dimensional image of the lips of the user is based on the extraction of the lip contour, and the contour of the extracted lip is matched with the contour of the user in different pronunciations. Compare to identify the user’s pronunciation.

[0004] However, in real life, the two-dimensional contour information of the user's speech for many words is the same, so the recognition acc...

Claims

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