Unlock instant, AI-driven research and patent intelligence for your innovation.

Contouring method-based three-dimensional face recognition method

A three-dimensional face, recognition method technology, applied in the field of biometrics, can solve the problems of insufficient recognition accuracy and speed

Inactive Publication Date: 2013-01-09
NANKAI UNIV
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these algorithms still have obvious shortcomings in terms of recognition accuracy and speed.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Contouring method-based three-dimensional face recognition method
  • Contouring method-based three-dimensional face recognition method
  • Contouring method-based three-dimensional face recognition method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The principle on which the present invention is based is described as follows:

[0026] (1) Feature extraction algorithm:

[0027] Analyze the 3D model and extract three feature points, select the tip of the nose and the corner of the eyes, determine the direction of the face according to the positions of these three points, and unify them through matrix transformation.

[0028] Select a reference point as the coordinate origin of the three-dimensional coordinates of the face, and then select a suitable axis, and use this as a reference to segment the contour lines of the three-dimensional face model. Take the Z axis as an example to illustrate the specific segmentation method: first set a Z value, set it as T, and then project the point of Z>T onto a map to obtain a two-dimensional image. The contour map of Z=T can be obtained by performing edge extraction on this two-dimensional image. By setting different T values, different contour lines can be obtained, so as to ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a contouring method-based three-dimensional face recognition method, and relates to a biology recognition method, in particular to an algorithm for realizing face recognition by utilizing a three-dimensional face model. The invention aims to provide an effective and rapid three-dimensional face recognition algorithm. In the contouring method-based three-dimensional face recognition method, the three-dimensional face model is changed into an easily processed two-dimensional curve diagram by a contouring extracting method; and a corresponding algorithm is provided based on the curve diagram. The method comprises two parts such as feature extraction and recognition and analysis, wherein the two parts are realized by using a feature extracting algorithm and a recognition and analysis algorithm respectively. The three-dimensional face model is a rugged curved surface. In the method, the three-dimensional face recognition is realized by drawing a contour map extraction feature of the three-dimensional face so as to fulfill the aim of identity authentication. The key point of the invention is to provide an algorithm for realizing the face recognition by utilizing counter map extraction feature information of the three-dimensional face, so that the accuracy and the speed of the recognition are improved greatly.

Description

【Technical field】: [0001] The invention relates to a biometric identification method, in particular to an algorithm for realizing human face identification by using a three-dimensional human face model. 【Background technique】: [0002] With the rapid development of science and technology, various identification technologies emerge in an endless stream. Among them, the identity authentication technology developed based on the characteristics of non-replicable, difficult to forge, unique, and relatively stable biometric features has become a widely recognized identity security technology. Currently commonly used biometric-based identification technologies include: DNA, fingerprint, retina, iris, and face recognition. Among these technologies, face recognition has become the most acceptable identification method due to its directness, friendliness, convenience, and secrecy, thus becoming one of the most active fields in biometric identification technology. [0003] However, m...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00
Inventor 蓝杨王紫霏吴杨李江秦鹏杨勇袁小聪
Owner NANKAI UNIV