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An identification method and system

A technology for identification and identification, which is applied in the field of identification, can solve the problems of long time consumption and low recognition rate, and achieve the effects of avoiding disgust, improving matching accuracy, and fast calculation speed

Active Publication Date: 2021-06-04
江门市中心医院 +1
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  • Abstract
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  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the existing identification method based on palm veins has the problems of long time consumption and low identification rate, and provides an identification method and system

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Embodiment Construction

[0053] The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0054] An identification system such as figure 1 As shown, it includes near-infrared LED, CCD image sensor, FPGA and PC; wherein the output end of near-infrared LED is connected with the input end of CCD image sensor, the output end of CCD image sensor is connected with the input end of FPGA, and the output end of FPGA Connect to PC. Firstly, high-resolution palm vein images are collected through the image acquisition front-end combined with CCD image sensor and FPGA, and then the original palm vein images are preprocessed, and the training data (obtained during registration) and test data (online verification) are extracted respectively. The local invariant features of the image, and use the Euclidean distance to measure the similarity between the test data feature poi...

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Abstract

The invention discloses an identity recognition method and system. First, a high-resolution palm vein image is obtained by using an image acquisition method combining CCD and FPGA, and then the original palm vein image is preprocessed, and the training data (obtained during registration) are separately processed. Extract the local invariant features of the image with the test data (online verification), and use the Euclidean distance to measure the similarity between the test data feature point vector and the training data feature point vector for feature matching. After matching, according to the feature matching rate For the palm vein image with a high feature matching rate, the decision result is directly output, and for the vein image with a low feature matching rate, the three-dimensional deflection angle estimation and three-dimensional rotation of the image are performed, and a feature selection and three-dimensional rotation are performed on the rotated image. match, and then directly output the decision result.

Description

technical field [0001] The invention relates to the field of identification, in particular to an identification method and system, which are suitable for identification of non-contact palm vein images. Background technique [0002] Identity verification is the basic method and premise for people to strengthen information security. In real life, identity authentication is required in many occasions, such as logging in to a computer, logging in to a website, handling business in a bank, identifying suspects, entering a military location, etc. An effective identity verification method can bring safety, convenience and benefit to our life, and can bring stability, order and efficiency to our society. Traditional identity authentication is carried out through external objects such as certificates, passwords, cards, etc., which are easy to be forged or impersonated. To eliminate these hidden dangers, we must abandon these external objects and seek an identification technology tha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06F21/32
CPCG06F21/32G06V40/10G06V40/14
Inventor 冯宝张绍荣覃科
Owner 江门市中心医院
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