Three-dimensional human face in-vivo detection method and device
A 3D face and living body detection technology, applied in the field of biometrics, can solve problems such as poor robustness and stability, and low accuracy of 3D face liveness detection methods, and achieve high robustness, high precision, and high accuracy degree of effect
Active Publication Date: 2016-07-06
BEIJING TECHSHINO TECH
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Problems solved by technology
[0004] In order to solve the problems of low accuracy, poor robustness and poor stability of the existing three-dimensional human face detection method, the present invention provides a method and device for three-dimensional human face detection, which can determine the user to be authenticated / recognized Whether it is a living body, and the accuracy of authentication / identification is high, and the authentication / identification result is robust and stable
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[0029] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.
[0030] On the one hand, an embodiment of the present invention provides a method for three-dimensional face detection, such as figure 1 shown, including:
[0031] Step 101, acquiring a three-dimensional face image.
[0032] Prioritize the use of equipment or devices with a three-dimensional face image acquisition function (such as an acquisition device with a 3D camera) to acquire face images of users to be identified / authenticated.
[0033] Step 102, selecting the first feature point and the second feature point in the 3D face image, and obtaining the 3D coordinate information of the first feature point and the second feature point.
[0034] Ordinary two-dimensional face images can only obtain two-dimensional coordinates of feature points, while three...
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The invention discloses a three-dimensional human face in-vivo detection method and device, and belongs to the field of human face recognition. The method comprises the following steps: acquiring a three-dimensional human face image; selecting a first feature point and a second feature point of the three-dimensional human face image, and acquiring three-dimensional coordinate information of the first feature point and the second feature point; fitting a reference plane of the three-dimensional human face image according to the three-dimensional coordinate information of the first feature point; and computing the distance value from the second feature point to the reference plane of the three-dimensional human face image according to the three-dimensional coordinate information of the second feature point; judging whether the three-dimensional human face image is from a living body according to the distance value. The method disclosed by the invention can be used for judging whether the human face image is from the living body, the recognition precision is high, and the recognition result has robustness and stability.
Description
technical field [0001] The present invention relates to the field of biometrics, in particular to a method and device for three-dimensional face detection Background technique [0002] Face recognition is a biometric technology for identification based on human facial feature information. A series of related technologies that use a camera or camera to collect images or video streams containing human faces, automatically detect and track human faces in the images, and then recognize the detected faces. [0003] Since human biometric information cannot be kept strictly confidential, the attacks on biometric identification systems have never stopped, just like other authentication systems. Compared with other biometric features, face features are the easiest to obtain. Counterfeiters can obtain user face photos or videos through online searches, sneak shots, etc., and then carry out deceptive behaviors on the face recognition authentication system. The existing three-dimensio...
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IPC IPC(8): G06K9/00
CPCG06V40/164G06V40/169G06V40/161
Inventor 孔勇王玉瑶
Owner BEIJING TECHSHINO TECH