High-precise palm-print identifying arithmetic based on single matching fractional layer combination

A technology of matching scores and palmprint recognition, which is applied in character and pattern recognition, computing, computer components, etc., can solve the problems of increased computational complexity, loss of palmprint information, and large impact of light, etc., to speed up the preprocessing speed , the effect of reducing computational complexity

Inactive Publication Date: 2009-10-07
SOUTHWEST JIAOTONG UNIV
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AI Technical Summary

Problems solved by technology

The computational complexity of the feature extraction stage of this algorithm increases significantly, and the four directional features are fused into one feature, which loses some useful palmprint information, making it difficult to make full use of the ...

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  • High-precise palm-print identifying arithmetic based on single matching fractional layer combination
  • High-precise palm-print identifying arithmetic based on single matching fractional layer combination
  • High-precise palm-print identifying arithmetic based on single matching fractional layer combination

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Embodiment

[0028] A kind of specific embodiment of the present invention is, a kind of high-precision palmprint recognition algorithm based on independent matching score layer fusion, comprises the following steps:

[0029] a. Palmprint image preprocessing based on mobile subtraction method: cut out the palmprint image including two corner points between the middle finger and index finger, ring finger and little finger from the collected palmprint image, and then cut out the palmprint image Carry out median filtering and binarization processing; translate the binarized palmprint image forward, upward, and downward by 30 pixels, and fill the rear, lower, and upper parts of the image that were vacated after the translation with values If the pixel is 0, three shifted images are obtained; the three shifted images are subtracted from the binarized palmprint image respectively, so that the pixel value less than or equal to 0 is zero, and the value of the remaining pixels is 255 , to get three...

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Abstract

The invention discloses a high-precise palm-print identifying method based on single matching fractional layer combination. firstly, the invention proposes a new palm-print image pre-processing method based on moving image method to positioning and partitioning the palm-print image for speeding up the pre-processing of the image; Then distantly filtering the palm-print image by the filter Gabor; directly filtering the sampling point by integrating the filtering step and the sampling step so as to greatly reduce the feature extracting time. During the matching identification, the vein information of the palm-prints towards the same direction is single operated Hamming matching, so the method solves the position excursion problem of the vein features towards different directions caused by different filters. The combination between the matching fractional layer and the average plan maximum remains and makes use of the phase and the direction information of the vein feature. the invention greatly speeds up the pre-processing of the palm-print image and the extraction of the vein feature and furthest enhances the ID identifying precision of the palm-print.

Description

technical field [0001] The invention relates to an identity authentication method based on biological features, specifically a high-precision palmprint recognition algorithm based on independent matching score layer fusion. technical background [0002] Accurate identification is required in daily life and in many occasions such as finance, justice, security check, e-commerce and so on. There are three main ways of human identification: the first is based on knowledge, such as using passwords, passwords, etc.; the second is based on items, such as using keys, ID cards, etc.; the third is based on the human body. Biometric methods, such as face, fingerprint, palm print, voice, etc. There are many defects in the first two methods. The method based on items is inconvenient to carry and is easy to be lost, damaged, stolen or forged; the method based on knowledge is easy to be forgotten and cracked. The identification method based on human biometrics overcomes the above-mention...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06K9/46
Inventor 张家树黄文辉
Owner SOUTHWEST JIAOTONG UNIV
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