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A liveness detection method based on blinking with an infrared camera

A technology of infrared camera and living body detection, which is applied in deception detection, instrumentation, calculation, etc.

Active Publication Date: 2021-07-06
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

This type of method has a good effect on the counterfeiting of photos, but it cannot effectively resist the counterfeiting of videos

Method used

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Embodiment Construction

[0027] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the embodiments.

[0028] A living body detection method based on blinking under an infrared camera device, comprising the steps of:

[0029] Step 1: Collect face video data.

[0030] Gather a section about the video data to be detected by an infrared camera (the camera with an additional infrared light source and an optical filter), as the input image data of the present invention;

[0031] Step 2: Face image and human eye position detection.

[0032] First, the frame image (input original image I) is converted to grayscale to obtain the grayscale image I_gray, and then the image I_gray is detected by the Viola-Jones face detector to obtain the face rectangle frame RECT, and the person in the current frame is obtained Face image (that is, the image area determined by the rectangular frame...

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Abstract

The invention discloses a living body detection method based on an infrared camera blinking, and belongs to the technical field of digital image processing. The present invention is as follows: collecting a section of video segment to be detected that satisfies the detection duration through an infrared camera device; acquiring the face image and the left and right eye positions of the current frame of the video segment to be detected; dividing the face image of the current frame into upper and lower regions, The upper area includes the positions of the left and right eyes; and extract the frame difference map of the upper area of ​​the current frame and the previous frame; after binarizing the frame difference map, perform the opening operation of the image morphology, and then search for all contours, if the contour If the number exceeds two, perform suspected blink detection to obtain the blink position; otherwise, continue to process the next frame; then perform real blink detection on the current frame based on the blink position: if the left and right eye positions are within the left and right blink positions, the current object to be detected is considered to be living body. The invention increases the robustness of eye blink detection, so that the false detection rate is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of digital image processing, and in particular relates to a living body detection method based on blinking of an infrared camera device. Background technique [0002] With the rapid development of computer application technology and artificial intelligence research, image processing technology is urgently needed in many fields, and digital image processing technology is applied in more and more fields. Effect. Face recognition technology has always been promising in identity recognition technology due to its convenience. However, identity recognition technology has high requirements for security. The traditional single face recognition can only guarantee the accuracy of face verification. , It cannot guarantee whether the source of the face is a real person, or a counterfeit feature such as a photo, video, etc., which leads to a great reduction in the application range of face recognition in the security fi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00
CPCG06V40/161G06V40/45
Inventor 解梅马争蒋尚达肖亚敏
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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