High precision palm print recognition method based on two-dimensional quadrature Log-Gabor filtering

A palmprint recognition, high-precision technology, applied in character and pattern recognition, instruments, computer parts, etc., can solve problems such as easy to be forgotten, cracked, easily lost, damaged, etc.
CN100578529CInactive Publication Date: 2010-01-06SOUTHWEST JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SOUTHWEST JIAOTONG UNIV
Publication Date
2010-01-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a high-precision palmprint recognition method based on two-dimensional orthogonal Log-Gabor filtration, which uses two two-dimensional Log-Gabor filters which are mutually orthogonal on directions to constitute the two-dimensional orthogonal Log-Gabor filter OLG (f, Theta, Theta 0, Sigma Theta, f0, Sigma f), thus carrying out the filtration of a palmprint image after the pre-treatment; then the palmprint image OF after the filtration adopts the phase coding mode to extract the orthogonal phase characteristic POPF which is equal to (FR, FI) of the palmprint image; then the Hamming distance matching algorithm is adopted to carry out the matching of orthogonal phase characteristics POPF1 and POPF2 of two palmprint images, thus obtaining the matching result. The algorithm is less affected by the conditions of the collected light and has low computational complexity and high recognition precision.
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Description

technical field

[0001] The invention relates to an identification method based on biometric features, in particular to a high-precision palmprint identification method based on two-dimensional orthogonal Log-Gabor filtering. Background technique

[0002] In today's highly informationized world, with the rapid development of computer technology and network technology, information security has shown unprecedented importance. Accurate identification is required in daily life and in many occasions such as finance, justice, security check, e-commerce and so on. At present, there are three main identification methods for human beings: the first is knowledge-based methods, such as using passwords, passwords, etc.; the second is based on items, such as using keys, ID cards, etc.; the third is based on 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 a...

Claims

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