Face authentication method and device

An authentication method and authentication device technology, applied in character and pattern recognition, instruments, computer parts, etc., can solve problems such as occlusion, sensitivity to changes in attitude, inaccurate authentication, and inability to meet real-time performance, and reduce time and cost. Space complexity, strong discriminative effect

Active Publication Date: 2015-12-09
BEIJING EYECOOL TECH CO LTD +1
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AI Technical Summary

Problems solved by technology

At present, ID card authentication methods in the prior art include methods based on eigenfaces and methods based on Gabor features, etc. However, for methods based on eigenfaces, the accuracy of face positioning is required to be high, and the method is not sensitive to occlusion, The change of posture is more sensitive, which can easily lea

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  • Face authentication method and device
  • Face authentication method and device

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Embodiment Construction

[0033] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0034] Glossary:

[0035] The two-dimensional Gabor filter is a filter that can better simulate the visual stimulus response of simple cells in the human visual system;

[0036] LBP (LocalBinaryPattern, local binary pattern) is binary coded by comparing the pixel value of the center and the neighborhood, which can appropriately increase or decrease the pixel value change under a small displacement, and is not sensitive to parallel lighting. As a feature encoding tool, LBP has been widely used in face recognition feature extraction;

[0037] AdaBoost (AdaptiveBoosting) is an adaptive boosting machine learning algorithm. AdaBoost can continuously adjust the sample weight through its own iteration, and integrate multiple weak classifiers into a strong clas...

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Abstract

The invention provides a face authentication method and device, and belongs to the field of image processing and pattern recognition. The method comprises the following steps: extracting Gabor texture features of an acquired face image sample pair through a Gabor filter, and separating real parts from virtual parts of the extracted Gabor texture features to obtain a plurality of feature graphs; summarizing the plurality of obtained feature graphs through an LBP (Local Binary Pattern) statistical histogram to serve as face feature expression of the face image pair; performing feature selection on the face feature expression of the face image sample pair through an AdaBoost (Adaptive Boosting) algorithm; and performing feature dimension reduction, feature judgment processing and the like on the face feature expression of the face image sample pair subjected to the feature selection through a PCA (Principal Components Analysis) algorithm and an LDA (Linear Discriminant Analysis) algorithm in sequence. Compared with the prior art, the face authentication method provided by the invention has the advantages of full extraction of sample texture information, low sample quantity demand, short algorithm time and low space complexity.

Description

technical field [0001] The invention relates to the fields of image processing and pattern recognition, in particular to a face authentication method and device. Background technique [0002] As the most effective document that can represent the identity of adults over 16 years old in China, the second-generation ID card records the holder's unique ID number, face image and other relevant information. However, the emergence of ID card theft, false ID cards, and multiple ID cards for one person has caused huge losses to many industries and countries. Therefore, using the second-generation ID card for identity authentication has become an important method to avoid the above phenomenon. This method is to compare the photo of the second-generation ID card with the face image collected on the spot to determine whether it is the same person. [0003] Due to the low resolution of the face image on the second-generation ID card, there is often a large age difference between the fac...

Claims

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Application Information

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IPC IPC(8): G06K9/00
CPCG06V40/166G06V40/168G06V40/172
Inventor 王洋张伟琳朱和贵
Owner BEIJING EYECOOL TECH CO LTD
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