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Mouth movement detection method and device and living body recognition method and system

A technology of mouth movement and detection method, which is applied in the field of face recognition, can solve the problems that the security of the face recognition system cannot be guaranteed, and achieve the effect of simple equipment hardware requirements and simple and efficient calculation

Inactive Publication Date: 2017-11-17
GUANGZHOU SHIYUAN ELECTRONICS CO LTD
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Problems solved by technology

However, criminals will use pictures or videos instead of real people for face recognition, so the security of the entire face recognition system cannot be guaranteed

Method used

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  • Mouth movement detection method and device and living body recognition method and system
  • Mouth movement detection method and device and living body recognition method and system
  • Mouth movement detection method and device and living body recognition method and system

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Embodiment Construction

[0062] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0063] For a mouth movement detection method provided in Embodiment 1 of the present invention, see figure 1 , figure 1 It is a schematic flow diagram of the present embodiment 1, including steps:

[0064] S11, extracting several video frames from the face video to be tested;

[0065] S12. Obtain several key point positions of the mouth of each video frame extracted from the face video to be tested;

[0066] S13. Obtain the mouth length and mouth width of the mo...

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Abstract

The invention discloses a mouth movement detection method, which comprises the steps of extracting a plurality of video frames from a human face video to be detected; acquiring a plurality of key point positions of the mouth in each video frame extracted from the human face video to be detected; acquiring the mouth length and the mouth width of the mouth in each extracted video frame according to the plurality of key point positions of the mouth, and acquiring a mouth value of the corresponding video frame through calculating the ratio of the mouth length and the mouth width; and judging a movement condition of the mouth in the human face video to be detected based on the mouth value of each extracted video frame. Correspondingly, the invention further discloses a mouth movement detection device. The mouth movement detection method and device are simple in calculation and high in efficiency.

Description

technical field [0001] The invention relates to the field of face recognition, in particular to a mouth movement detection method and device, and a living body recognition method and system. Background technique [0002] With the development of face recognition technology, more and more scenes need to use face detection to quickly identify a person's identity. However, criminals will use pictures or videos instead of real people for face recognition, so the security of the entire face recognition system cannot be guaranteed. The live face recognition can detect that the person currently performing face recognition is a live face rather than a face in a photo or video, thereby ensuring the security of the face recognition system. When performing face recognition, the detection of the mouth movement of the face to be tested helps to identify whether the face is a living body. In order to realize the efficient and simple recognition of whether the human face is alive or not d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V40/165G06V40/171G06V20/46
Inventor 陈全
Owner GUANGZHOU SHIYUAN ELECTRONICS CO LTD
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