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Method for retrieval and matching of hand back vein characteristic used for identification of status

A feature extraction and identification technology, applied in the field of computer processing, biometric identification based on decision-level fusion, can solve the problems of reduced possibility of successful comparison, blurring, and damaged fingerprint images

Inactive Publication Date: 2007-07-25
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the fingerprint is too wet, the fingerprint image will be damaged or blurred, so the possibility of successful comparison will be reduced
In addition, this kind of contact collection equipment is unhygienic

Method used

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  • Method for retrieval and matching of hand back vein characteristic used for identification of status
  • Method for retrieval and matching of hand back vein characteristic used for identification of status
  • Method for retrieval and matching of hand back vein characteristic used for identification of status

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Embodiment Construction

[0038] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments:

[0039] The method for feature extraction and matching identification of dorsal hand veins of the present invention collects images through a specially developed vein collection device, and then normalizes the size and gray level of the vein images, enhances the vein images, and performs threshold-based image detection on the images. After image segmentation, image denoising, thinning and other preprocessing, the features based on vein geometry, feature moment-based and K-L compression transform features are extracted, and finally, a decision-level fusion-based method is used to analyze the various features. The recognition results are fused to give the recognition results. The method of the present invention contains the following steps:

[0040] (1) Collection of the dorsal vein of the hand

[0041] According to the characteristics...

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Abstract

A method for extracting the venous characteristics from human hand back and finding a match to identify a person includes such steps as obtaining clean venous image by special acquisition apparatus, normalizing its size and grayscale, intensifying, dividing based on threshold, removing noise, fining image, extracting venous characteristics by one of three approaches, classifying by classifier, and finding match by decision fusion.

Description

(1) Technical field [0001] The invention relates to the field of computer processing, in particular to the technical field of biometric identification based on decision-level fusion. (2) Background technology [0002] In modern society, with the rapid development of computer and network technology, information security shows unprecedented importance. Identification is a necessary prerequisite for ensuring system security. Accurate identification is required in application fields such as finance, national security, justice, e-commerce, and e-government. For example, whether a person has the right to enter a secure area (security system), whether he has the right to conduct specific transactions, whether he is a resident of the country, and whether a password or key is set separately on the company computer network and the Internet for security purposes. At present, ID cards (such as ID cards, work permits, smart cards, computer logo cards, and savings cards) and passwords ar...

Claims

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Application Information

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IPC IPC(8): A61B5/117G06K9/00G06T5/00
Inventor 王科俊冯伟兴付斌唐墨熊新炎袁智张晓雷朱寰肖楠
Owner HARBIN ENG UNIV