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Matching identification method by extracting characters of vein from finger

A technology of finger vein features and recognition methods, applied in character and pattern recognition, instruments, computer parts, etc., can solve problems such as the impact of recognition rate

Inactive Publication Date: 2007-12-26
HARBIN ENG UNIV
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Problems solved by technology

Different from the products in Japan and South Korea, they use the red hot image of the back of the hand to extract the veins on the back of the hand. It is said that the FAR and FRR are both 0.0%, but the temperature and humidity of the environment have a great impact on the recognition rate. Impact

Method used

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  • Matching identification method by extracting characters of vein from finger
  • Matching identification method by extracting characters of vein from finger
  • Matching identification method by extracting characters of vein from finger

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Embodiment Construction

[0081] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0082] The method of finger vein feature extraction and matching recognition, collects images through the vein acquisition device, and then performs grayscale conversion on the collected images, positioning of the finger area, filtering, image segmentation, denoising, cutting of the finger area and finger width After the standardization and other preprocessing steps, the features are extracted by the method of wavelet moment fusion PCA and LDA transformation, and finally the recognition is completed. In conjunction with Fig. 1, the method of the present invention contains the following steps:

[0083] (1) Acquisition of finger vein images

[0084] The basic principle of the selected finger vein collection device is to use near-infrared rays to irradiate the finger, and the image sensor senses the light transmitted from the finger. The key point is that the hemog...

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Abstract

An identifying method based on pick-up and match of finger vein includes collecting finger vein image by image collection device, carrying out pretreatment on collected vein image, dividing vein image to be image block in specific size, applying wavelet decomposing algorithm to carry out wavelet decomposition and wavelet moment pick-up on sub-image, picking up characteristic by carrying out PCA and LDA transform and carrying out match and identification by utilizing fuzzy threshold means.

Description

(1) Technical field [0001] The invention relates to a biological feature identification technology, in particular to a finger vein feature identification technology. (2) Background technology [0002] With the advent of the information age, the security and confidentiality of information has aroused people's general attention. The rich physiological characteristics of the human body make biometric identification technology an important means in the field of identity authentication. [0003] Biometric Identification Technology (Biometric Identification Technology) refers to a technology that uses human biometrics for identity authentication. Unlike traditional methods, biometric methods are based on something that is inherent in our bodies, our individual characteristics. Virtually any physical characteristic can be used for identification. Biometrics are divided into two categories based on physical characteristics and behavioral characteristics. Physical characteristics...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/80
Inventor 王科俊冯伟兴付斌袁智熊新炎
Owner HARBIN ENG UNIV
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