A 3D face recognition method under partial occlusion based on radial lines

Abstract

The invention discloses a three-dimensional face recognition method under partial occlusion based on radial lines. The realization steps of the method are as follows: (1) extract the radial lines emitted from the nose point on the human face, and compare the radial line nose point The above parts are uniformly sampled; (2) extract the local area between the sampling points, and construct the local feature descriptor; (3) construct the cost function of the feature descriptor, and generate the similarity with local matching characteristics corresponding to the radial line (4) Match the similarity vectors corresponding to the radial lines to obtain similarity values, and the sum of the similarity values ​​of all radial lines is the similarity value of two three-dimensional faces, thereby completing face recognition. The present invention intercepts and samples radial lines, extracts local regions between sampling points and extracts local features, increases effective information of radial lines, and improves three-dimensional face recognition accuracy under partial occlusion.

Description

technical field [0001] The invention belongs to the field of computer vision, and specifically relates to a three-dimensional face recognition technology, in particular to a three-dimensional face recognition method under partial occlusion based on radial lines. Background technique [0002] Face recognition technology has excellent non-contact, concealment and wide application prospects. In the past 30 years, many researchers have devoted themselves to the research of face recognition. Although there have been a lot of research on two-dimensional face recognition before, it is still unable to overcome the influence of illumination and posture. Therefore, people are gradually realizing the congenital defects of two-dimensional face recognition. In 3D faces, geometric information and relative position information are relatively stable, so compared to traditional 2D face recognition, 3D face recognition is more robust to illumination, posture and expression. Therefore, in re...

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Problems solved by technology

[0004] Purpose of the invention: In view of the above-mentioned situation where partial occlusion exists in the acquisition and recognition of 3D face data and the recognition accuracy is not high, the present invention provides a 3D face recognition under partial occlusion based on radial lines

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