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Identification system based on biological characteristics of fingerprints

A biometric feature recognition and identity recognition technology, applied in character and pattern recognition, instruments, computer parts, etc., can solve the problems of complex data processing, difficult collection of biometric features, and high requirements of collectors, and achieve simple and convenient collection, anti-corrosion Good noise performance and improved accuracy

Inactive Publication Date: 2011-10-19
TIANJIN UNIVERSITY OF TECHNOLOGY
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AI Technical Summary

Problems solved by technology

[0010] Although the above methods solve the defects of a single type of biometric identification and improve the security and accuracy of identification, they all have their own defects. For example, the collection of biometric features is difficult, the requirements for the collector are high, and the data processing is relatively complicated.

Method used

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  • Identification system based on biological characteristics of fingerprints
  • Identification system based on biological characteristics of fingerprints
  • Identification system based on biological characteristics of fingerprints

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Experimental program
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Embodiment 1

[0040] The identification system based on fingerprint network biometrics provided by the present invention includes a fingerprint network acquisition unit, a biometric identification unit, and a database unit; the fingerprint network acquisition unit sends the collected original image signals to the biometric identification unit, and the biometric The feature recognition unit extracts the features of the fingerprint network and compares it with the biometric template in the database unit, and finally obtains the identification result;

[0041] The fingerprint network acquisition unit includes two independent visible light imaging devices respectively used to acquire fingerprints and backprint images of fingers, and the fingerprint network acquisition active device placed around the imaging device and used to irradiate visible light to the identified finger The imaging light source template is provided with a filter for filtering out interference from other external light source...

Embodiment 2

[0096] Such as Figure 5 After the system shown starts to work, the user inputs the images of the fingerprint (5) and backprint (3) of the finger through the image acquisition template (A), that is, the system acquires the fingerprint (5) and the backprint of the finger (3) through the CCD (6) image signal and convert the analog signal into a digital signal through the A / D conversion device, and the CPLD, as an interface and logic control device, stores the fingerprint (5) and finger backprint (3) images in SDRAM, and after each collection is completed Notify the DSP that the data is ready after the first image. In the data processing stage, DSP takes the data in SDRAM into its internal RAM in blocks, as temporary data for fingerprint image processing and recognition algorithms. The DSP matches the processing result with the characteristic fingerprint network collected and extracted in FLASH, and finally displays the recognition result through the LCD display.

[0097] The s...

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Abstract

The invention relates to an identification system based on biological characteristics of fingerprints. The system comprises two fingerprint collection units, a biological characteristic identification unit and a database unit, wherein the two collection units are used for collecting fingerprints and opisthenar fingerprints simultaneously and sending received original image signals to the biological characteristic identification unit, the biological characteristic identification unit is used for respectively extracting characteristic templates of fingerprints and opisthenar fingerprints by preprocessing the collected images, the two characteristic templates are integrated in a fusion manner by utilizing the statistical method, comparison and recognition are carried out between the ultimate template and a template stored previously in the database unit, and finally judgment is made to obtain a final authentication result of identification. The system has the advantages of low error rate of authentication and good noise immunity, and is characterized by good man-machine interaction, counterfeit avoidance and the like.

Description

technical field [0001] The invention belongs to the technical field of biological feature identification, and mainly relates to a biological feature identification system based on fingerprint network. Background technique [0002] Biometric technology mainly refers to a technology for identity authentication through human biometrics, which are usually unique (different from others), measurable or automatically identifiable and verified. [0003] Human body biological characteristics include: fingerprints, veins, palm shape, retina, iris, body odor, face shape, even blood vessels, DNA, bones, etc.; behavioral characteristics include: signature, voice, walking gait, etc. The biometric identification system samples the biological characteristics, extracts its unique features and converts them into digital codes, and further composes these codes into feature templates. Feature templates are compared to determine if the two match to decide whether to accept or reject the person....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
Inventor 杨晓苹李飞朱亚东李波吴喆明曹丽丽陈志宏
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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