The 2017 National Day and Mid-Autumn Festival holidays are superimposed to form a “super holiday†for up to eight days. In this rare opportunity for travel, the reporter is a member of the “Renshan Car Sea†and went to Changsha to feel the courageous and eloquent attitude of Chairman Mao when he stood proudly on the island of Orange Island. On the way back, the reporter was curious that there were few people waiting in line for queueing at the Changsha Railway Station. When they approached, they discovered that the right-hand side of the ticket gates at the train station had been equipped with several face recognition verification machines.
Due to work reasons, reporters often see relevant reports reporting the application of face recognition products at the train station, as well as the speculation and doubts of netizens regarding these devices. Today, they finally have the opportunity to “test†some of them.
Train station face recognition first experience
According to the equipment prompts, the reporter put the train ticket QR code upwards and the ID card face down, put it into the orange entrance in the middle of the device, and then put the face at the camera of the machine to “brush his faceâ€, probably for about one second. The blue gate opens and the machine is automatically released. The whole process is very fast and efficient.
Lei Fengnet learned that the application of “brush face recognition†in Changsha Railway Station is more accurately called “personal identificationâ€: a camera is installed on the automatic ticket gate, and when the passenger approaches the machine, the camera collects photos on site and the ID chip The photos in the comparison, from the above point of view, due to the need for identity verification, that is, people often say that the 1:1 recognition process, the requirements of the computing power is relatively low. But even so, it can be a little surprising to be able to successfully identify reporters in just one second:
Since my ID card was processed at the senior year (2008), it has been almost 10 years since then, and the appearance has undergone relatively large changes. In the past, when we were on a plane or on a certificate, the staff would allow me to wait a while and wait for the second trial.
In addition, because the equipment is placed in the entrance of the train station, the light is strong and the machine can quickly recognize the surprise.
After entering the station, during the waiting time, the reporter chatted with the train station staff. They explained that these devices had been used on the ground a few months ago. Passengers using these machines were the slowest to enter the station in only 3 seconds. After the match was successful, the machine's green light was on and the gates were open; the match failed and the red light came on. , the prompt "Please do manual verification."
They immediately added that there are also three major preconditions for taking the "Brush Channel":
First of all, there must be a physical ticket with a clear and undamaged ticket. Red and blue tickets are acceptable.
Secondly, it is necessary to remove masks, sunglasses, hats, etc. to keep the face uncovered;
In addition, because the machine can currently only identify ID cards, it is said that other documents such as passports, residence books, driver's licenses, soldier certificates, military officers' certificates, etc. are currently unrecognizable and need to be manually checked to enter the station.
As for the machine's ability to easily identify reporters and compare it with the photos of ID cards ten years ago, it is not surprising that Chen Bin, the director of AI products at Ping An Technology, is not a surprise. When he was interviewed by Lei Fengwang in an interview before, the camera would first locate the face in the picture when collecting the face picture, and then locate the feature points such as the corner of the eye, the tip of the nose, the corners of the mouth, the contour of the face, etc., and perform light compensation. A small number of occluders were removed for correction, and finally a deep learning algorithm was used to extract identity features and compared with ID background images to identify identities. In this process, slight weight, thinness, and slight makeup would not affect the recognition effect.
For the high recognition rate in the backlight environment, Shenzhen Feiruisi science and technology staff told Lei Feng Network that many systems now use visible light face recognition technology to conduct human eyes under natural light (sunlight, ordinary lighting, etc.) Face detection and capture, the captured photos will be used to create a mathematical model of the relevant face, obtain the information of the face feature points and extract it, and compare it with the photo of the back end face database ID card, and output the comparison result. .
The advantages of face recognition program
In the follow-up process, Lei Fengnet found that the authentication device based on face recognition has many advantages, including the following advantages:
1, increase the speed of traffic. In the past, it was almost five seconds per person through a manual inspection. After using the machine, it would probably pass a second.
2. Improve recognition efficiency. The human eye’s ability to identify people with cosmetic, obesity, or hair changes is reduced relative to the machine, and it is not even accurate and quick to identify whether the identity card is the same as the person’s identity.
3, reduce staff pressure. In the past, during the National Day and Spring Festival holidays, the daily passenger traffic index at the railway station increased, and the workload of the station staff was severe.
4, improve the security level. Real-time comparison of ID photographs and faces to quickly determine if they are themselves and whether they are fugitive suspects. It is reported that Shanghai’s three major railway stations have recently applied a face recognition system to maintain the stability of the railroad during the “19th National Congressâ€, and implemented “special area coaches, secondary security inspections, and full-staff comparisons for passengers taking Beijing trainsâ€. , focus on inventory."
There are many advantages, how to promote?
The four major advantages all push the face recognition verifier to a higher level. How about the "useful" equipment that is currently popular in domestic railway stations?
Feiruisi science and technology staff told Lei Feng network, at present some of the domestic railway stations are adapted to the relevant systems (usually larger capital cities), but due to the installation of equipment must be planned in advance, before the major changes to the hardware facilities, late hardware installation, Software debugging and system maintenance are bothersome and the prices are relatively expensive. At present, most of the small and medium-sized stations have not yet been used.
In addition, according to a security practitioner, related technologies have only emerged in the past two years and landed on a small scale. The relevant departments in each city have different perspectives. It also takes time to review the project. It also requires government support for unified promotion.
He said that from the perspective of Party A (government), the requirements for related equipment in public places are relatively high, and the practice of landing one to two years is an inevitable process. If during the trial period, related technologies and products do change the traditional mode of operation and greatly increase operational efficiency, then several years later, it should be implemented nationwide. However, in this process, because the train station's brushing face station is a 1:1 comparison process, the technical threshold is not particularly high, and there are also many related solutions providers on the market. Therefore, there are also some “swampy fish†manufacturers disrupting the market. Order, which requires relevant departments and agencies to speed up the introduction of relevant policies and standards.
For Lei Feng network curious is, if face recognition related to the application of high prices, there are other applicable low-cost identification program?
Ping Bin, Product Director of Ping An, once explained to Lei Fengwang that human faces are the only biometric information that can be collected without the user’s active cooperation. The collection process of other biometrics, such as fingerprints and irises, needs the premise of the user's active cooperation. That is, if the user refuses to collect, it cannot obtain high-quality feature information. From the point of view of social psychology, face recognition identities conform to people's visual recognition experience and are easily accepted by users. If people are collecting fingerprints and irises, they may worry about privacy leaks. However, they are taken by hundreds of surveillance cameras on the streets every day, but they do not feel infringed because the faces are inherently exposed and are considered to be natural features of identity recognition.
As for the price, it will be relatively expensive in the early stage of technology popularization, but as the technology matures and market players gradually increase, this problem will be easily solved.
summary
From the initial experience of face recognition at the Changsha Railway Station, the reporter was pleasantly surprised by the application of related technologies. Face recognition has not been as 'unreliable' as it was a few years ago. The tentacles of technology are touching every aspect of people's lives. It may be that as faced by experts in the field of body recognition technology in Beijing University of Aeronautics and Astronomers, face recognition is the fastest and best way to realize artificial intelligence for related companies.
It can be foreseen that in the future, as related technologies are further matured and the use cost is further reduced, relevant standards will be introduced one after another, and “brushing on the face†will become an exception.
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