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

Abstract

The invention discloses a three-dimensional face recognition device and method based on the three-dimensional point cloud. The three-dimensional face recognition device based on the three-dimensional point cloud comprises an data input unit, a characteristic region detecting unit, a noise filtering unit, a characteristic point selecting unit, a data registration and calculation unit and a nearest neighbor classifier calculation unit, wherein the data input unit is used for obtaining three-dimensional point cloud face data, the characteristic region detecting unit is used for positioning three-dimensional point cloud characteristic regions obtained by the data input unit, the noise filtering unit is used for conducting smoothness on the positioning data so as to filter noise, the characteristic point selecting unit is used for selecting global face characteristic points from the pre-processed face data, the data registration and calculation unit is used for conducting registration on the selecting global face characteristic point selected by the characteristic point selecting unit, and the nearest neighbor classifier calculation unit is used for classifying the data registered through the data registration and calculation unit. The three-dimensional face recognition method based on the three-dimensional point cloud comprises the steps of imputing, characteristic region positioning, rough registration, noise filtering, characteristic point selecting, re-registration and recognition. According to the three-dimensional face recognition device and method based on the three-dimensional point cloud, recognition is conducted after noise filtering and registration are conducted on the three-dimensional face data, and thus the recognition precision is high.

Description

technical field [0001] The present invention relates to the technical field of face recognition, in particular to a three-dimensional face recognition device and method based on a three-dimensional point cloud. 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 researchers have focused their research on this field. [0003] Among them, the Chinese invention patent application No. 201010256907.6 published on December 29, 2010 proposed a method for describing the characteristics of faces using the relevant features of three-dimensional bending invariants. The local features of the variable are extracted, and the relevant features of the bending invariant are extracted, and the relevant feat...

AI Technical Summary

Problems solved by technology

[0005] Three-dimensional face recognition is the basic work of many applications in the three-dimensional face field. The pose problem is a difficult problem in the field of face recognition. The existing face recognition technologies including the above two existing technologies are often easily caused by different poses Missing information leads to low accuracy of face recognition with large pose changes

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