Anti-counterfeiting method and device for distinguishing real person and photo playback

Abstract

The embodiment of the invention discloses an anti-counterfeiting method and device for distinguishing a real person and photo playback. The method comprises steps: S1, a first video file collected bya camera is acquired; S2, a face motion in the first video file is amplified by an Euler video amplification method to obtain video frames after amplification; S3, the video frames after amplificationare synthesized to a second video file; S4, through a Lucas-Kanade method, the optical flow of the second video file is calculated to obtain an optical flow chart; S5, optical flows in a background area and a face area in the optical flow chart are compared, and the difference value between the optical flow amplitude of the background area and the optical flow amplitude of the face area is calculated; and S6, whether the difference value between the optical flow amplitude of the background area and the optical flow amplitude of the face area is larger than a preset threshold is judged, if yes, a real person for recognition is determined, or otherwise, a non real person for recognition is determined.

Description

technical field [0001] The invention relates to the technical field of computer vision detection, in particular to an anti-counterfeiting method and device for distinguishing between real people and photo playback. Background technique [0002] In recent years, face recognition technology has developed by leaps and bounds, and it has higher stability in response to changes in posture, lighting and expression. This has also prompted more and more occasions to use face recognition technology for identity authentication. However, the face recognition system can only recognize the faces in the collected images, but cannot identify whether the collected face images are from a real person in front of the camera or a photo. Therefore, the identification system is extremely vulnerable to various deliberate attacks. Once these attacks are successful, the consequences and losses may be extremely serious. In order to solve this problem, face anti-counterfeiting technology, also know...

AI Technical Summary

Problems solved by technology

[0010] The present invention provides an anti-counterfeiting method and device for distinguishing between real people and photo playback, which solves the problem that the existing anti-counterfeiting methods cannot distinguish high-resolution photos, videos, and three-dimensional masks of realistic human faces, and the video sequence can simulate human faces The biological activity of blinking and opening the mouth, the technical problem of low accuracy of anti-counterfeiting

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