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Finger vein recognition method combining bionic texture feature and linear texture feature

A texture feature, finger vein technology, applied in biometric recognition, subcutaneous biometrics, character and pattern recognition, etc., can solve problems such as incompleteness, reduced recognition rate, single feature, etc.

Inactive Publication Date: 2015-04-08
GUANGDONG WICROWN INFORMATION TECH +1
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AI Technical Summary

Problems solved by technology

[0003] Traditional finger vein recognition methods often only extract a single feature during feature extraction, which is incomplete and cannot describe the characteristics of finger vein images well. In this way, incomplete features usually lead to a reduction in recognition rate

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  • Finger vein recognition method combining bionic texture feature and linear texture feature
  • Finger vein recognition method combining bionic texture feature and linear texture feature
  • Finger vein recognition method combining bionic texture feature and linear texture feature

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0030] The present invention is divided into two processes: registration process and identification process. The registration process first preprocesses the image, and then extracts bionic texture features and linear texture features respectively, and fuses and encodes them to generate feature vectors, which are stored in the template database. For the registration process, see figure 2 left side. In the recognition process, the image is firstly preprocessed, and then the bionic texture feature and linear texture feature are extracted. Finally, the image similarity Dist(a,b) between the image and the database template is calculated by formula (7). According to the set The threshold determines the recognition result. For the specific process of identification, see figure 2 Right.

[0031] 1. Pretreatment

[0032] Since there are some useless backgro...

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Abstract

The invention discloses a finger vein recognition method combining a bionic texture feature and a linear texture feature. By adopting the method, the bionic texture feature and the linear texture feature of finger veins can be utilized effectively, the adverse effect of noise on the recognition accuracy is avoided, and the recognition performance and robustness of a fingerprint vein recognition system are enhanced. The bionic texture feature and the linear texture feature of a finger vein image are extracted respectively. The bionic texture feature is extracted by using a Gabor filter with good similarity of a visual cortex simple cell receptive field model of a mammal. When the method is used for performing feature recognition, the effect is similar to object recognition through human eyes, and a good effect is achieved.

Description

technical field [0001] The invention relates to the field of finger vein recognition, in particular to a finger vein recognition method combining bionic texture features and linear texture features. Background technique [0002] Finger vein recognition is a new biometric technology with good development prospects. The key to finger vein recognition is how to accurately extract the vein network, and then perform feature extraction and matching on this basis. In order to overcome the influence of low-quality finger vein images on the recognition results, a finger vein recognition method combining bionic texture features and linear texture features was proposed. The basic principle is to do some preprocessing on the collected finger vein images first, including image enhancement, size normalization, etc., and then extract the features of the preprocessed image combined with bionic texture and linear texture, and fuse the coding to generate features vector. Finally, the featur...

Claims

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Application Information

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IPC IPC(8): G06K9/00
CPCG06V40/10G06V40/14
Inventor 卢慧莉黄靖黄振鹏於巧红何素宁
Owner GUANGDONG WICROWN INFORMATION TECH
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