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Vascular network restoration method based on a finger vein image

A finger vein and repair method technology, applied in the field of blood vessel network repair based on finger vein images, can solve the problems of local incompleteness of the finger vein network and the inability to image small blood vessels, so as to improve the recognition performance. , the effect of stable integrity

Active Publication Date: 2019-03-26
CIVIL AVIATION UNIV OF CHINA
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Problems solved by technology

The problem of degenerated blurring of finger vein images can be solved by traditional image restoration technology, but the problem of local incompleteness of finger vein vascular network cannot be solved well, because the high scattering effect of biological tissue will directly cause small blood vessels unable to image

Method used

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  • Vascular network restoration method based on a finger vein image
  • Vascular network restoration method based on a finger vein image
  • Vascular network restoration method based on a finger vein image

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Embodiment Construction

[0047] The method for repairing the blood vessel network based on the finger vein image provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0048] Such as figure 1 As shown, the vascular network repair method based on the finger vein image provided by the present invention includes the following steps carried out in order:

[0049] 1) Preprocessing and enhancing the collected original finger vein images to obtain enhanced finger vein images;

[0050] Firstly, the collected original finger vein image is preprocessed including background elimination, histogram equalization, median filter, and normalization, and the preprocessed finger vein image I(x,y) is obtained. In order to further enhance the finger vein image for vascular morphological feature extraction, the Gabor enhancement method is used to perform image enhancement in 3 scales and 8 directions on the preprocessed finger vein image ...

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Abstract

The invention discloses a vascular network restoration method based on a finger vein image. The method comprises the following steps: preprocessing and enhancing an original finger vein image; Carrying out binarization processing and redundant information removal; Extracting a finger vein blood vessel network skeleton image and marking according to a regional sequence; Extracting a source point for repairing the finger vein blood vessel network; Repairing the finger vein blood vessel network skeleton image; Obtaining a finger vein blood vessel repair image; And matching the finger vein blood vessel repair image of the finger vein to be tested with a binary image in a finger vein database, and the like. The method has the advantages that the method is used; the stability of a finger vein blood vessel network skeleton structure is fully utilized; Vascular rupture information is searched in the neighborhood of the feature point by using a minimum path principle, and the endpoint and the bifurcation point are used as repair source points to repair the incomplete blood vessel, so that a more stable and good-integrity blood vessel network can be obtained, and the method is successfully applied to vein image recognition, and the recognition performance is improved.

Description

technical field [0001] The invention belongs to the technical field of finger vein image recognition, in particular to a method for repairing a blood vessel network based on a finger vein image. Background technique [0002] Biometric identification technology has attracted much attention due to its advantages such as being hard to lose, hard to forge, and can be used anytime and anywhere. In recent years, the use of human finger vein features for identification has gradually developed into a new research direction of biometrics. As one of the physiological characteristics of human beings, finger veins not only have basic biological characteristics such as uniqueness, universality, stability, and measurability, but also have natural anti-counterfeiting and living properties. These are caused by the formation mechanism of veins, anatomical structure, It is determined by natural factors such as the environment. [0003] Compared with traditional biometric features such as fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06T5/00G06T7/136
CPCG06T7/136G06T2207/20024G06V40/10G06V40/14G06T5/77
Inventor 贾桂敏李振娟李乾司茂杨金锋
Owner CIVIL AVIATION UNIV OF CHINA
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