Three-dimensional face recognition device and method based on three-dimensional point cloud

A three-dimensional point cloud and three-dimensional face technology, which is applied in the field of three-dimensional face recognition, can solve the problems of low accuracy of recognition results, dependence on description ability, and insufficient description ability of detailed texture of three-dimensional data, etc., and achieves good quality adaptability and detailed texture. The effect of strong description ability and good application prospect

CN104504410AInactive Publication Date: 2015-04-08SHENZHEN WEITESHI TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2015-04-08
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a three-dimensional face recognition device and method based on three-dimensional point cloud; the device comprises a characteristic area detection unit for positioning a three-dimensional point cloud characteristic area; a mapping unit for normalized mapping the three-dimensional point cloud to a depth image space; a data calculating unit using Gabor filters in different dimensions and directions to calculate responses in different dimensions and directions of three-dimensional face data; a storage unit for training a visual dictionary of the obtained three-dimensional face data; a mapping calculating unit for implementing histogram projection to the visual dictionary with respect to the Gabor response vector obtained by each pixel; a classification calculating unit for coarse classification of the three-dimensional face data; and an identification calculating unit for identifying the three-dimensional face data. By employing the disclosed technical scheme, the detail texture description ability of the three-dimensional data is stronger, and the adaptability to the quality of the input three-dimensional point cloud face data is better, thus the application foreground is better.
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Description

technical field

[0001] The present invention relates to the technical field of three-dimensional face recognition, in particular to a three-dimensional face recognition device and method based on three-dimensional point clouds. Background technique

[0002] Compared with 2D face recognition, 3D face recognition has the advantages of being robust to illumination and less affected by factors such as posture and expression. Therefore, after the rapid development of 3D data acquisition technology and the great improvement in the quality and accuracy of 3D data, Many scholars devote their research to this field.

[0003] CN201010256907 proposes the relevant features of three-dimensional bending invariant to describe the characteristics of human face. This method extracts the relevant features of the bending invariant by encoding the local features of the bending invariant of adjacent nodes on the surface of the three-dimensional face; signs the relevant features of the bending i...

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Embodiment Construction

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0045] Such as figure 1 , 2 As shown, the present invention discloses a three-dimensional face recognition device based on three-dimensional point cloud, which specifically includes:

[0046] A feature region detection unit for locating a feature region of a three-dimensional point cloud;

[0047] A mapping unit that normalizes and maps the 3D point cloud to the depth image space;

[0048] A data calculation unit that uses Gabor filters of different scales ...