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Three-dimensional face recognition method for door lock

A three-dimensional face and recognition method technology, applied in the field of face recognition, can solve the problems of low recognition rate, poor expression, occlusion and noise robustness, and achieve the effect of overcoming expression changes and reducing data loss.

Inactive Publication Date: 2015-03-04
SUZHOU FUFENG TECH
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AI Technical Summary

Problems solved by technology

The existing recognition methods have a low recognition rate and are less robust to expressions, occlusions and noises

Method used

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Embodiment Construction

[0025] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0026] A kind of three-dimensional face recognition method that is used for door lock of the present invention comprises the following steps:

[0027] (1) Preprocessing the 3D face;

[0028] (2) Extract multiple facial radial curves emitted from the tip of the nose on the 3D face, and resample the radial curves to extract useful points, and establish the point correspondence between the curves to reduce data loss and hair loss The influence of occlusion on the effect of face recognition;

[0029] (3) Perform layered elastic matching on each three-dimensional face radial curve of the test face and the corresponding curve of the face in the library set;

[0030] (4) According to the point correspondence relationship established between the test fa...

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Abstract

The invention discloses a three-dimensional face recognition method for a door lock. The method comprises the following steps: (1) preprocessing a three-dimensional face; (2) extracting a plurality of radial curves radiated from the apex nasi point of the three-dimensional face, sampling the radial curves again, extracting usable points, and then building a point correspondence relation of the curves for reducing the influence of the data loss and shielding of hair on the face recognition effect; (3) performing layered elastic matching for each radial curve of the three-dimensional face and the corresponding curve of the face stored in a library; (4) matching the curves based on the distance from the corresponding point to the apex nasi point according to the built point correspondence relation of the tested face and the face stored in the library; (5) performing weight fusion for the two matching similarity of each curve to obtain the total similarity for recognizing. The method shows a good effect on matching the deformation graphics; the influence caused by the change on expression can be effectively overcome; therefore, the influence of the data loss and shielding of the air on the face recognition effect can be effectively reduced.

Description

technical field [0001] The invention belongs to a face recognition method, in particular to a three-dimensional face recognition method for a door lock. Background technique [0002] Face recognition has the characteristics of non-contact and good concealment, so it has become a research hotspot in the field of pattern recognition and computer vision. The traditional two-dimensional face recognition based on two-dimensional grayscale or color images has achieved good recognition performance, but it is still susceptible to factors such as lighting posture and expression. The essential reason is that the image is a three-dimensional object in two-dimensional space. Minimalistic projection. [0003] At present, there are many researches on 3D face recognition methods, which can be divided into 3D face recognition methods based on airspace direct matching, overall feature matching and local feature matching based on feature forms. The existing recognition methods have low reco...

Claims

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Application Information

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IPC IPC(8): G06K9/00
CPCG06V20/653G06V40/165G06V40/172
Inventor 张会林孙利华
Owner SUZHOU FUFENG TECH
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