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A fingerprint identification method and a device based on depth hierarchy

A fingerprint recognition, depth-level technology, applied in character and pattern recognition, acquisition/organization of fingerprints/palmprints, instruments, etc. The effect of improving integrity and reducing error rate

Inactive Publication Date: 2019-01-15
JINAN INSPUR HIGH TECH TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the fingerprint is on the skin of the finger, it is easy to wear and stick dirt, thereby reducing the quality of the fingerprint image
[0005] Aiming at the problem of low precision of low-quality fingerprint recognition by traditional methods, the present invention proposes a fingerprint recognition method and device based on depth hierarchy

Method used

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  • A fingerprint identification method and a device based on depth hierarchy
  • A fingerprint identification method and a device based on depth hierarchy

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] combined with figure 1 , this embodiment proposes a fingerprint identification method based on depth hierarchy, including the following steps:

[0047] 1) Training part:

[0048] 1a) Collect fingerprint images, divide the collected fingerprint images into two training sets of low-quality fingerprint images and high-quality fingerprint images, and mark the images of the two training sets respectively;

[0049] 1b) Train the marked low-quality fingerprint images and high-quality fingerprint images to build a quality evaluation network;

[0050] 1c) Learn the characteristics of high-quality fingerprint images, convert the marked low-quality fingerprint images into high-quality fingerprint images, and build a quality-enhanced network;

[0051] 1d) Analyze the characteristics of high-quality fingerprint images and the conversion of low-quality fingerprint images into high-quality fingerprint images, especially learn the characteristics of converting low-quality fingerprint...

Embodiment 2

[0062] combined with figure 2 , this embodiment proposes a fingerprint identification device based on depth hierarchy, which includes:

[0063] Marking module 10, is used for marking low-quality fingerprint image and high-quality fingerprint image, finishes classification;

[0064] Training building block one 20, used for training the completed low-quality fingerprint image and high-quality fingerprint image, and constructing the quality evaluation network model 50;

[0065] The training building block 2 30 is used to convert the marked low-quality fingerprint image into a high-quality fingerprint image according to the characteristics of the high-quality fingerprint image, and construct a quality-enhanced network model 60;

[0066] The training building block 3 40 is used to analyze the characteristics of high-quality fingerprint images and the conversion of low-quality fingerprint images into high-quality fingerprint images, especially to learn the characteristics of conve...

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Abstract

The invention discloses a fingerprint identification method based on depth hierarchy, which relates to the technical field of fingerprint identification and comprises a training part and an identification part. In the training part, according to the integrity and clarity of the fingerprint image, the fingerprint image is divided into low-quality fingerprint image and high-quality fingerprint image, and the fingerprint image is classified and marked. Using Resnet as the basic network, the quality evaluation network is constructed after many times of training. GAN technology converts low-qualityfingerprint image into high-quality fingerprint image, constructing quality enhancement network aft many times of training, finally, analyzing all high-quality fingerprint image, especially low-quality fingerprint image into high-quality fingerprint image, constructing cost-sensitive network aft many times of training; in the part of identification, the high-precision fingerprint identification can be achieved by using the constructed quality evaluation network, quality enhancement network and cost-sensitive network. The invention also discloses a fingerprint identification device, which is combined with a fingerprint identification method to improve the fingerprint identification accuracy.

Description

technical field [0001] The invention relates to the technical field of fingerprint identification, in particular to a fingerprint identification method and device based on depth hierarchy. Background technique [0002] Types of biometrics include face, voice, iris, retina, vein, and fingerprint recognition. Fingerprints are the uneven lines on the skin on the front of the end of a person's fingers. Since each person's fingerprint is unique, and fingerprints are not easy to change with age or physical health, fingerprint recognition has become the most popular biometric method at present. With the continuous development of related technologies such as computer image processing and pattern recognition, biometric technology has been more and more widely used. [0003] Fingerprints, also called handprints, are raised lines on the skin. Because human fingerprints are produced by the joint action of heredity and environment, everyone has fingerprints, but they are different. B...

Claims

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Application Information

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IPC IPC(8): G06K9/00
CPCG06V40/1365
Inventor 袭肖明于治楼
Owner JINAN INSPUR HIGH TECH TECH DEV CO LTD
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