Smile motion detection method and device and in vivo recognition method and system

A motion detection and living technology, which is applied in the field of face recognition, can solve the problem that the security of the face recognition system cannot be guaranteed, and achieve the effect of simple and efficient calculation process and simple equipment hardware requirements.

Inactive Publication Date: 2017-11-21
GUANGZHOU SHIYUAN ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Smile motion detection method and device and in vivo recognition method and system
  • Smile motion detection method and device and in vivo recognition method and system
  • Smile motion detection method and device and in vivo recognition method and system

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Embodiment Construction

[0059] 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.

[0060] Embodiment 1 provided by a smiling action detection method of the present invention, see figure 1 , figure 1 It is a schematic flow diagram of the first embodiment, including steps:

[0061] S11. Extract several video frames from the video of the human face to be tested; wherein, the extracted video frames include the first video frame of the video of the human face to be tested;

[0062] S12. Obtain the key point position of the left mouth corner and the ...

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Abstract

The invention discloses a smile motion detection method, and the method comprises the steps: extracting a plurality of video frames from a to-be-detected human face video, wherein the extracted video frames comprise a first video frame of the to-be-detected human face video; obtaining the positions of key points at left and right mouth corners of each extracted video frame in the to-be-detected human face video; taking the positions of key points at left and right mouth corners of the first video frame as the reference, and obtaining the moving distances of the left and right mouth corners in each extracted video frame; determining that a to-be-detected human face in a video frame with the moving distances of the left and right mouth corners being greater than a preset distance threshold value is in a smiling state; and determining that the to-be-detected human face is smiling if a plurality of extracted video frames comprises a preset number of video frames with the to-be-detected human face being in a smiling state. Correspondingly, the invention also discloses a smile motion detection device. The method is simple in calculation, and is high in efficiency.

Description

technical field [0001] The present invention relates to the field of face recognition, in particular to a method and device for detecting a smile action and a method and system for recognizing a living body. 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 current face to be tested 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, it can be helpful to identify whether the face is alive or not by detecting the smiling action of the face to be tested. In order to realize whether the face is alive or not efficiently and simply when recognizing the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V40/20G06V40/45
Inventor 陈全
Owner GUANGZHOU SHIYUAN ELECTRONICS CO LTD
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