Bio-assay detection method and device

Abstract

The invention discloses a bio-assay detection method. The method comprises the steps of 1, continuously acquiring frame pictures of a face through an image acquiring device; 2, detecting the acquired continuous frame pictures through a trained facial expression detecting unit, a face posture detecting unit and an expression change detecting unit; 3, determining that the face is a true human face if more than two groups of basic actions change according to the detection result in step 2, and otherwise, entering step 4; 4, randomly selecting a group of basic instructions from state element sets of the three detecting units, and prompting a user of finishing the group of basic instructions within the specified time; if that the user finishes the basic instructions is determined according to the detecting results of the three units, determining that the face is the true human face, and otherwise, determining that the face is a false face. With the adoption of the method, the effective deformation of the human face can be accurately caught and accurately detected, so that the true human face and the false face can be distinguished, and the invasion of a human face recognition system can be reduced.

Description

technical field [0001] The invention relates to the technical field of face recognition, in particular to a living body detection method and device. Background technique [0002] As an effective technology for identification, face recognition technology has been developed rapidly and widely used in recent years. In the past few decades, face recognition has been widely used in commercial and law enforcement departments, such as security monitoring, access control attendance, computer system login, credit card identification, pension insurance collection, etc. [0003] However, in the process of face recognition technology from research to practical application, it is necessary to solve the security threats of face recognition technology, such as using photo faces, face video clips or imitated 3D face models for fake login face recognition system. In order to make the face recognition system practical, it is necessary to design a face detection system that can resist the th...

AI Technical Summary

Problems solved by technology

The existing face detection methods mainly have the following problems: high calculation time cost, such as using three-dimensional depth information for live detection, and using optical flow methods for face non-rigid running changes; there are many application scenarios, such as By analyzing high-frequency components to judge the face of the photo and the real face, this method is only suitable for low-resolution photos, not for high-definition photos; additional equipment is required, such as analyzing the infrared image of the face and the method of joint voice recognition Wait

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