What is vein recognition?

Finger vein recognition is a type of vein recognition. First, the finger vein recognition map is obtained from the finger vein recognition instrument. The feature value is extracted from the finger vein distribution map according to a special comparison algorithm. For images, store digital images of finger veins in a computer system and store feature values.

★ Technical characteristics

Living body recognition

When the finger vein is used for identity authentication, the image feature of the finger vein is acquired, which is a feature that exists only when the finger is alive. In this system, the non-living fingers cannot obtain the vein image features, so they cannot be recognized, and thus cannot be falsified.

Internal characteristics

When the finger vein is used for identity authentication, the vein image feature inside the finger is acquired, not the image feature on the finger surface. Therefore, there is no recognition obstacle caused by damage, abrasion, dryness, or too wetness of the finger surface.

Contactless

Use finger veins for identity authentication. When acquiring finger vein images, the finger can be recognized without touching the device. This method does not have the unhygienic problem when the hand touches the device and the safety problem caused by the surface characteristics of the finger may be copied. . Finger vein method Because the vein is located inside the finger, the influence of external factors such as air temperature is negligible, and it is suitable for almost all users. User acceptance is good. In addition to not requiring direct contact with the surface of the scanner, this non-invasive scanning process is simple and natural, alleviating the user's resistance to possible concerns due to hygienic or troublesome use.

High security level

Because of the three aspects of the previous biometrics, internal features and non-contact features, it ensures that the user's finger vein features are difficult to be forged. Therefore, the finger vein recognition system has a high security level, and is particularly suitable for use in places with high security requirements. The Department of Electronic Engineering, Seoul National University, Korea, has a document E3 on finger vein recognition algorithms, which introduces traditional vein recognition algorithms and how to use expensive DSP processors to handle floating-point operations and improve real-time requirements to shorten the recognition time. The vein recognition algorithm mainly includes three parts: acquisition of vein image; vein image preprocessing and vein recognition. The image pre-processing part is mainly composed of Gaussian low-pass filtering, Gaussian high-pass filtering, threshold processing, bilinear filtering, and improved median filtering. Through experiments on 5000 samples, the recognition rate reached 94.88%.

★ Technical application

Finger vein recognition technology uses the texture of finger vein blood vessels for identity verification, which is harmless to the human body and has the characteristics of not being easily stolen or forged. The identification technology can be widely used in access control systems in the fields of bank finance, government national security, education and social security.

Used in company and factory access control

The work environment is a widely used field of access control systems, and puts forward higher requirements for security. At present, most companies and factories use IC cards as access control systems, but there are the following deficiencies:

(1) Employees need to carry IC cards with them, which may be lost or damaged;

(2) For large companies or factories, in the case of thousands of people, each employee needs to be equipped with IC cards, which will increase the cost of the system and the degree of complexity of the workflow;

(3) Because IC cards are not interdependent with the biological characteristics of the human body, employees often punch cards on behalf of them, which causes confusion to the management of companies and factories.

The access control system using biotechnology is more convenient for employees to use, and does not require employees to use or carry additional signs, such as passwords, IC cards, etc. Access control systems using finger vein technology are more convenient, hygienic, and more user-friendly.

In the actual use environment, the finger vein system can be combined with the enterprise security system and the time and attendance system to record the entry and exit management logs of employees in detail, which can be queried according to different query conditions, and alarms when dangers occur.

The finger vein system also has a dual function. Only when different fingers of two people have passed one by one, can they have the authority to enter places with higher security requirements. This will be a better security solution for enterprises.

Used in public places

With the development of society and the acceleration of life rhythm, the flow of people in public places such as subway entrances and exits, office building halls, libraries and other places is increasing. Controlling the normal operation and safety of these places has become an important task for management agencies. The number of people in these places is much larger than the number of employees in a certain enterprise, and the use of IC card-style access management devices will be a low rate and unsafe practice. Convenient and fast biometric technology will be more suitable for these public places.

Applied to intelligent building system

In recent years, China's real estate market has developed rapidly, and people's requirements for housing are also increasing. They expect a comfortable, convenient, and safer living conditions. Intelligent building technology came into being. It combines communication network technology, computer technology, automatic control technology, security technology and so on.

While people enjoy the high-quality life brought by high technology, the safety of the living environment has become the root of all this. At present, some residences have used IC cards to control electronic locks. However, it is often the case that the elderly and children forget to carry the card, causing inconvenience in life. The use of IC cards is also easy to be copied or stolen by someone else who intends to cause property damage and personal safety.

An intelligent building system that uses a finger vein system can bring a more convenient and safe living experience to residents. The owner only needs to gently insert his finger into the venous system. The system can verify the validity and record the log. Furthermore, the finger vein system can be linked with the elevator in the intelligent building system. When the user inserts a finger through the lobby door, the elevator will automatically descend to the first floor, and when the occupant enters the elevator, according to the records of the finger vein system database, it will automatically run to the user's floor. In the whole process, the residents can return home easily and quickly without pressing any buttons, which will be a brand-new life experience.

Used in hotel management

Similar to the smart residential system, it will be very convenient to apply the finger vein system to hotel management, and it can improve the security solution of the hotel grade.

Applied to government agencies

Finger vein recognition technology uses the texture of finger vein blood vessels for identity verification, which is harmless to the human body and has the characteristics of not being easily stolen or forged. The identification technology can be widely used in access control systems in the fields of bank finance, government national security, education and social security. In 2013, the national unified examination for professional titles of foreign languages ​​for professional and technical personnel fully promoted the application of finger vein recognition technology. In addition to submitting relevant materials and information in 2013, applicants in the provincial direct examination area will use finger vein identification technology to collect personal finger vein information during qualification examination.

Applied to Jian prison entrance guard

Finger vein recognition technology can achieve a high degree of unification of electronic and physical identities, which can strongly support the use of modern computer technology to realize the digital management of Jian prison. Finger vein recognition technology can be applied to all aspects of jian prison management, thereby truly helping jian prison realize its management function.

The construction of jian prison access control system is one of the important contents of our country's "Golden Shield Project". The jian prison access control system is an important means to ensure the safety of jian prison and realize modern management. In the past few years, a series of negative incidents occurred in the Jian prison system in our country showed that how to build a complete, reliable, safe, and easy-to-operate Jian prison security access control system has become the top priority of the Jian prison authorities! From the perspective of hardware and software facilities, most of the gates of Chinese prisons are equipped with access control systems, and their management is relatively scientific. For example, the gate of the second jian prison in Hohhot City used a fingerprint verification device, but the escaped criminals can still escape by cutting their fingers. Therefore, for the identification of Jian prison, the traditional identification method can no longer meet the management requirements. The finger vein recognition technology is successfully applied to the access control system. It cannot be counterfeited. It must be a living body and have a high recognition rate!

Used in bank financial access control

China's financial industry is an industry of centralized currency circulation and belongs to a high-risk industry. The protection of security systems cannot be equal to that of ordinary units. Access control intelligent access control system is an important part of the security system, and in the application areas of the financial industry such as banks and treasuries, the network access control system is the "guardian" of the financial industry, and its role is crucial.