Shao Yu "Pao Ding" cuts of the anatomy of biometric technology (1)

The so-called biometric technology refers to the use of each individual unique biometric to authenticate a user of technology, also known as biometric authentication.

"Theoretically, biometric authentication is the most reliable means of authentication, because it directly with the person's physical characteristics to represent each person's digital identity, different people have different biological characteristics, therefore nearly impossible to imitated and replication. "

Pao Ding a cow, not because he can kill cattle, but because he spoke very cattle cuts will clearly bovine Anatomy, complete in its place.

Both benefited from the Pao Ding personal intelligence, more benefits from the Pao Ding in slaughter cattle career years professional degree.

Today we will cover a field in the international biometric as Pao Ding as years of professional research experts--Shenzhen Yaluete biometric technology co., Ltd. 's founder and Chief Scientist of Shao yu. Want him to "Pao Ding" cuts, the biometric door both familiar and some lofty technical anatomy.

The so-called biometric technology refers to the use of each individual unique biometric to authenticate a user of technology, also known as biometric authentication.

"Theoretically, biometric authentication is the most reliable means of authentication, because it directly with the person's physical characteristics to represent each person's digital identity, different people have different biological characteristics, therefore nearly impossible to imitated and replication. "Biometric technology mainly through measurable physical or behavioral and other biometric identity authentication technology, while biometrics refers only to measure or can be automatically recognized and proven physiological characteristics or behavior. Shao yu, biometric is divided into physical characteristics and behavior characteristics of the two categories. Physical characteristics include fingerprint, Palm, retina, Iris, body odor, face and hands of blood vessels, bones and DNA; behavioral characteristics including: signature, voice, gait, and so on.

Next, for biometric technology in broad principle and analysis, Shao yu is currently more common and more mature six types of biometric technology: an introduction to the anatomy of the analysis.

First, the fingerprint recognition technology

The fingerprint is a person born with physical characteristics, about 14 years later, each person's fingerprints are already shaping.

Fingerprints have "fixed", not because people continue to grow and change. The fingerprint is "unique", different people will have the same fingerprint, since 1888, the United Kingdom, the famous anthropologist Gregory, MI den, Vlaams experimental report published by the snow, the scientific evaluation of the characteristics, the world has established the fingerprint storage cabinets, experience more than 60 years, also did not find the exact same fingerprint card.

As early as 7000 BC-6000 years, the ancient Assyrian and Chinese people sensed the fingerprint features, and use the fingerprint as a status symbol, beginning mid-19th century on the fingerprint in the scientific sense of.

The 1960s using computer automatically recognizes fingerprints, while criminal use of automated fingerprint identification system (AFIS) gradually started in the world. But when the fingerprint was generally used inks na yan. In 1980, along with the personal computer and optical fingerprint sensor of fingerprint identification technology invention, begun to enter the number of non-judicial fields, such as identity cards, etc. After 1990, cheap fingerprint sensor and computing devices, solved fast and accurate matching algorithm of problem, enables fingerprint recognition technology to the application based on the individual. Since then, people on fingerprint identification technology research, the nature of the fingerprint has been further understanding. Now, the fingerprint has been developed to a living donor recognition stage, and has been widely used in security, attendance, computer information authentication fields.

Fingerprint recognition mainly for capture and routing, transmission, validation, and other process, the principle is as follows:

① RAR (capture): first use of a fingerprint scanner, a fingerprint of graphics and other relevant characteristics of the RAR.

Just get the image has a lot of noise. This is mainly because of the work and the environment; for example, the fingers are dirty, the fingers have stab wounds, scars, marks, dry, humid or torn. Then image enhancement, reduced noise, enhance the contrast of the ridge and Valley. And for the processing of fingerprint images involves designing a fit, match filter and appropriate thresholds.

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