Face living body detection method and system

A living body detection and living body technology, applied in the field of pattern recognition, can solve the problems that illegal users are easy to imitate, the posture adaptability is not high, and the coordination action takes a long time to achieve the effect of strong posture adaptability, strong concealment, and high security.

Active Publication Date: 2015-11-04
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI +1
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Problems solved by technology

[0003] In the prior art, some face liveness detection methods used in face recognition systems require users to cooperate with specific actions. The algorithm is simple, but it is easy to leak the judgment basis, making it easy for illegal users to imitate, and it takes a long time to cooperate with the action. Limited, some methods such as blink detection and optical flow detection generally require the user to accurately face the camera, the posture adaptability is not high, and the user experience is not good

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  • Face living body detection method and system
  • Face living body detection method and system
  • Face living body detection method and system

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Embodiment Construction

[0046] It should be pointed out that the description and sequence of specific structures in this section are only descriptions of specific embodiments, and should not be considered as limiting the protection scope of the present invention. In addition, the embodiments in this section and the features in the embodiments can be combined with each other under the condition of no conflict.

[0047] Please also refer to Figure 1 to Figure 5 , the method and system for detecting human face liveness according to the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0048] combine figure 1 As shown, the face activity detection method of the present invention can include:

[0049] Step 1: Use two cameras to simultaneously capture two images of the identified object (the user is used as an example below), namely the left and right images;

[0050] Step 2: Use a face classifier to locate the face areas in the two i...

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Abstract

The present invention discloses a face in-vivo detection method and system. The face in-vivo detection method comprises the steps of: simultaneously and respectively acquiring two images of an identification object by two cameras; positioning face regions in the two images by adopting a face classifier so as to acquire face images which respectively correspond to the two images; carrying out feature point positioning on the two face images; carrying out feature point rapid stereo matching on the face images subjected to feature point positioning; calculating parallax errors of the two face image at match feature points and acquiring depth information values of the match feature points; and according to the depth information values of a plurality of match feature points, judging whether the face of the identification object is a living body. According to the present invention, excessive cooperation of a user is not required; safety is high; hidden performance is high; attitude adaptability is high; the application range is wide; a matching speed is high; and user experience is good.

Description

technical field [0001] The invention relates to the technical field of pattern recognition, in particular to a method and system for detecting human face liveness. Background technique [0002] With the development of biometric technology, face recognition technology has become mature. At present, under good lighting conditions and postures, the face recognition system can already perform relatively accurate face detection and recognition. However, for some For the face recognition system of access control, login and other systems, users can deceive the system by illegal means such as photos. Therefore, for this type of system, the higher the recognition rate, the greater the potential safety hazard. Therefore, the realization of living body detection has become a means of guaranteeing the security of this type of system. [0003] In the prior art, some face detection methods used in face recognition systems require the user to cooperate with specific actions. The algorith...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
CPCG06V40/45
Inventor 李卫军师亚亭宁欣刘文杰孙琳钧董肖莉
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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