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Registration method for fingerprint identification

A fingerprint recognition and image registration technology, applied in image data processing, instrumentation, computing, etc., can solve the problems of insufficient fingerprint recognition accuracy and low sensitivity, and achieve the effect of good feature invariance

Inactive Publication Date: 2019-11-26
邵曦
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the accuracy rate of fingerprint identification is still not high enough and the response is not sensitive enough. The purpose is to provide a registration method for fingerprint identification to solve the above problems

Method used

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Embodiment

[0022] The registration method of a kind of fingerprint identification of the present invention comprises Harris corner point algorithm and image registration flow process, also comprises the following steps:

[0023] S1, the user triggers sampling when the finger touches the fingerprint machine, collects sample images through the camera at a rate of 10-30 images per hour, and then selects an optimal image in each sampling interval to form according to the parameters of definition and noise. Register the image set, and the rest of the images are used as the source images for testing;

[0024] S2, perform the same preprocessing on the source image and the registered image, and use basic statistical features to perform preliminary image rotation, translation, and scale transformation to remove redundant noise;

[0025] S3, using the Harris corner algorithm to perform Harris corner detection on the source image and the registration image, and record the corner coordinates;

[00...

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Abstract

The invention discloses a registration method for fingerprint identification, and relates to image registration of fingerprint identification. The registration method comprises a Harris corner algorithm and an image registration process, and further comprises the following steps: S1, triggering sampling when a user touches a fingerprint machine with a finger, and setting a source image set to register an image set; S2, carrying out the same preprocessing of the source image and the registered image, carrying out the preliminary image rotation, translation and scale transformation through the basic statistical features, and removing the redundant noise; S3, performing Harris corner detection on the source image and the registration image by using a Harris corner algorithm, and recording corner coordinates; S4, setting a registration area; S5, calculating a correlation coefficient of a registration area of the source image and the registration image; S6, judging the matching degree of the source image and the registration image by using the correlation coefficient; and S7, entering an image registration process. According to the invention, fingerprint information can be effectively distinguished, and an ideal registration image set is obtained; and the registration method has good feature invariance, uniqueness, stability and independence.

Description

technical field [0001] The invention relates to image registration for fingerprint identification, in particular to a registration method for fingerprint identification. Background technique [0002] Image registration is the process of superimposing two or more images of the same scene obtained by different time, different viewing angles, and different sensors. At present, there are problems that the accuracy rate of fingerprint identification is still not high enough and the response is not sensitive enough. Contents of the invention [0003] The technical problem to be solved by the present invention is that the accuracy rate of fingerprint recognition is still not high enough and the response is not sensitive enough. The purpose is to provide a registration method for fingerprint recognition to solve the above problems. [0004] The present invention realizes through following technical scheme: [0005] A registration method for fingerprint recognition, including Har...

Claims

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Application Information

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IPC IPC(8): G06T7/33
CPCG06T7/33G06T2207/10G06T2207/20032
Inventor 邵曦
Owner 邵曦
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