Living body detection method and device
A living body detection and living body technology, which is applied in the field of image processing and face recognition, can solve the problems of inability to perform accurate fusion, affect the efficiency and accuracy of living body recognition, etc.
Inactive Publication Date: 2016-01-13
北京汉王智远科技有限公司
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[0009] However, the current score-level fusion method cannot accurately fuse features with different dimensions and different meanings, which affects the efficiency and accuracy of living body recognition.
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[0051] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only parts related to the present invention are shown in the drawings but not all content.
[0052] figure 1 A structural block diagram of the living body detection device of the present invention is shown.
[0053] The living body detection device 10 of the present invention includes an acquisition module 101 , a face feature extraction module 102 , a living body detection module 103 , a threshold value acquisition module 104 and a judging module 105 .
[0054] The acquiring module 101 is used for receiving face images of a plurality of recognition samples and a face image of an object to be recognized input by a us...
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The invention relates to a living body detection method and device. The method comprises the following steps: obtaining the face images of a plurality of recognition samples, and extracting the face characteristics of the plurality of recognition samples according to the face key point characteristic changes of the face images of the plurality of recognition samples; on the basis of the face characteristics of the plurality of recognition samples, calculating the living body detection scores of the plurality of recognition samples; according to the living body detection scores of the plurality of recognition samples, obtaining a living body judgment threshold value; obtaining a face image of an object to be recognized, and extracting the face characteristics of the object to be recognized according to the face key point characteristic changes of the face image of the object to be recognized; on the basis of the face characteristics of the object to be recognized, calculating the living body detection score of the object to be recognized; and judging whether the living body detection score of the object to be recognized is greater than or equal to the living body judgment threshold value or not, and judging that the object to be recognized as a living body if the living body detection score of the object to be recognized is greater than or equal to the living body judgment threshold value. While unreal face cheat recognition is effectively refused, calculation speed and precision can be improved, and living body judgment complexity is lowered.
Description
technical field [0001] The invention relates to the fields of image processing and face recognition, and relates to a living body detection method and device, in particular to a living body detection method and device based on face recognition. Background technique [0002] With the increasing demand for information security, the function of adding liveness detection to the face recognition system has received more and more attention. Common forms of facial attacks include photos, video playback, and 3D models. Playing photos and videos is the most common attack method, and people can easily obtain relevant information of legitimate users from mobile devices or surveillance cameras. [0003] With the development of modern technology, the synthesis of 3D faces and the acquisition of models are no longer difficult to achieve. For example, the service of ThatsMyFace.com can realize the reconstruction of 3D faces by uploading a frontal and a side photo. Customization of struct...
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IPC IPC(8): G06K9/00
CPCG06V40/161G06V40/45
Inventor 黄磊蔡利君刘昌平张健
Owner 北京汉王智远科技有限公司