Face image authentication method, storing and processing equipment based on perspective distortion characteristics

Abstract

The present invention relates to the field of face image recognition, computer vision and image evidence obtaining, and proposes a face image authentication method, and storage and processing equipment based on perspective distortion characteristics. The method includes: S1: identifying the key points and the contour of a human face in a 2D image; S2: acquiring the key points in a corresponding 3D model; S3: calculating the camera parameters based on the corresponding relationship between the key points in the 2D image and the key points in the 3D model; S4: based on the contour in the 2D image, optimizing the camera parameters; S5: sampling the two-dimensional key points of the human face for multiple times to obtain the intra-camera parameter estimation point clouds; and S6: calculating the inconsistency between the intra-camera parameter estimation point clouds and the camera's nominal intra-parameters and determining whether the human face image is a real one or not. The invention can effectively authenticate a 2D image and achieves high accuracy.

Description

technical field [0001] The invention relates to the fields of face image recognition, computer vision and image forensics, in particular to a face image authenticating method, storage and processing equipment based on perspective distortion characteristics. Background technique [0002] In the era of intelligence, digital images play a very important role. As a technology to automatically identify people's identities from face images, face recognition has been widely used in intelligent security, identity authentication, Internet finance and other fields. However, deception methods for face recognition systems also emerge in endlessly. Among them, the use of face photos for deception will cause the recognition system to mistakenly identify the photos as the parties when the parties are not present. This has greatly questioned the security of the face recognition system. In addition to the deception of the face recognition system, the authenticity of the face image itself i...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned problems in the prior art, that is, in order to solve the problem of authenticating facial images through the perspective distortion characteristics of the facial images captured by the camera, in one aspect of the present invention, a kind of facial image authentication based on perspective distortion characteristics is proposed. Pseudo method, including the following steps:

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