How much is smart door lock from the only security of "the world"?

Text 丨 Intelligence Relators

Author 丨 Ye Yuanfeng

"A photo may lie to it." With the widespread popularity of smart door locks, the security nature of the face recognition recently is increasing. Other scenes should be more concerned.

And what exactly is the fact, which reality of face recognition is revealed behind a smart door lock product?

Not long ago, the People's Daily Online Anhui Channel made a video of the evaluation video of the door lock product, using printing high -definition photos and three -dimensional simulation head models for the two 3D face recognition door lock samples. Through, the three -dimensional simulation head model has an error certification of a product.

This side confirms two things:

First, after a long period of development, the smart door lock products on the market, or most of the door locks that adopt 3D face recognition technology solutions, have a certain ability in resisting 2D images. "Zhang Photo Check Certification" is more difficult (not impossible).

Second, the current smart door lock products and face recognition technology, the "magic" and "Tao" concentration is more concentrated to 3D vision, "turning the article". There are indeed many products and technologies here, but there are products and technologies that can accurately identify fraud and other risk behaviors, which can no longer be generalized.

This is because a 3D perspective that contains all information is "the only world". The more accurate the data of the 3D visual collection and reconstruction, the closer to this "world's unique", the more secure the face recognition. However, there are various technical genres on the 3D visual track at present, which can achieve different degrees of "the world's only" and no other fraud "alternative".

There is no doubt, who can get closer to the unlimited security goal of "the world's unique", who can eliminate questioning and grasp the market opportunity in the smart door lock scene. Among them, the 3D structured light scheme has gradually become highlighted.

Smart door lock 3D visual technology has a variety of modes in parallel, 3D structure light is highlighted

At present, there are three main types of 3D visual schemes applied to smart door locks:

Structural optical scheme, that is, the geometric shape, size and near -infrared texture information of the camera's face through three -dimensional perception of the camera's face, which can be reconstructed and recognized, which can be similar to using a large number of fine "points" stereo. Essence

Both eyes plan, based on the principle of differential differentials to obtain the three -dimensional geometry of the face. If this scheme is understandable, it is a bit similar to ordinary people to use the left and right eye vision in the cinema to see the three -dimensional sense in 3D movies. A 3Dization of 2D technology is not a real 3D.

The TOF scheme, that is, use infrared light (laser pulse) to collect the reflected light after the external launch, calculate the reflection time to determine the location and the far -distance information. After a large amount of data combination, get a three -dimensional 3D model Essence

In fact, because the TOF scheme is facing problems such as immature sensor technology, the main two appeared on the smart door lock track at present, and the structural light seems to be more favored. Face recognition technology of simulation model fraud attacks is from Lu Shengan of an innovative company, and this company also focuses on 3D structural optical technology.

The structural light scheme and the double -eyed scheme cannot be said to have absolute quality and disadvantages. Each product is applicable. However, the 3D structural optical solution looks more suitable for door lock scenes.

On the one hand, the double -eyed scheme has a lower cost advantage but is not as good as the structural light scheme in terms of security. It is still "competent" within a certain scope of safety needs. Just like the security of ordinary people cannot reach the presidential level, it is important to be important. Select the corresponding safety of sex and how big budgets -just, for the door locks that keep the door of the house, more and more concerns are destined to make the "cost -effectiveness" allowing higher security needs, so the cost The higher structural optical solution has become the choice of more manufacturers.

On the other hand, the closer accuracy of the structural light scheme within 5 meters is higher, but the accuracy of the distance will decrease accordingly, but it is precisely this "disadvantage" that allows the structural optical solution The scene is more useful.

An artificial intelligence company in China has done an experiment to select 20 mobile phones to receive fraud attacks with the same face recognition. As a result, only iPhone11 has been tested, and the remaining 19 domestic mobile phones have been "broken", and the iPhone11 Face ID uses it. It is the 3D structured light technology. The old Apple and Lu Shengan's innovative company, such as smartphones and smart door locks, have a soft spot for 3D structured lights.

For example, Xiaomi face recognition smart door lock X, which claims to be Xiaomi's first high -end intelligent 3D face recognition flagship product. As a "not lost" product, Lu Shen perspective with Lu Shennan in the face recognition, customized, customized, customized The module of its 3D face recognition is clear, while ensuring safety and high recognition speed.

The recognition of head manufacturers on the industrial chain and the implementation of products have allowed the leading technology to quickly move towards the market. In addition to Xiaomi, Lu Shenguan has also become the door lock supplier of China Shipping Real Estate, realizing the batch business expansion of the B side.

Of course, smart door locks are only a typical application of 3D structures in many scenarios, and the latter has penetrated into many scenes with strict security needs. For example, Lu Shenwan's border three -dimensional portrait bayonet project is launched throughout a border province, with a total number of people exceed 10 billion; for example, in terms of financial payment, it provides Alipay's innovative enterprise Obizhong, an innovative company with a 3D face recognition module, Obizhong. The current market value of light has reached 16 billion, and Lubao's old rival WeChat Pay will include Lu Shenguan into his face -to -face payment 3D camera supplier list. They are mainly attacking 3D structured light.

In addition, nearly 20,000 face -to -face ride equipment and tens of millions of storage accurate identification systems from the No. 18 line of Guangzhou Metro also received the support of Lu Shengan from Lu Shengan, and cities such as Changsha, Shenzhen, Shaoxing, and Foshan are also actively exploring.

The recognized safety and scene fit allows the 3D structured light solution to quickly complete the market landing, and also allows the business of innovative enterprises such as Lu Shen to expand quickly in the way of project landing.

Taking the security of "the only world in the world", the 3D structure is being completed "three steps"

The 3D structured light has a variety of application advantages, and its development here is currently undergoing "three steps".

The first step is to strengthen the underlying technology.

It can be seen from the technical principle of 3D structured light that the fineness of "light dots" largely determines the fineness of 3D reconstruction. Therefore, the more "fine" the technical solution, the better the security of the smart door lock will be better Essence

Therefore, Lu Shenwan's expression in his technical description has the expression of "Asian millimeter -level three -dimensional perception ability". The reason is that at the level of hardware and software, manufacturers are constantly breaking through such underlying technologies.

At present, the consumer -grade high -precision 3D structured light camera provided by Lu Shenshi claims that it can project 30,000 characteristic points and restore the human face high -precision 3D details information. Coupled with the technical advantages of the 3D structured light scheme itself, special scenes (plastic surgery, shadow, large angle, wearing masks, twins similar crowds, etc.), malicious attacks (2D photos, 3D masks, bionic masks, high imitation head molds, etc.) The potential risks faced by smart door locks such as smart door locks can be effectively avoided, and it is difficult to "break".

The second step is to promote the scene with product adaptation.

Technology must not only be advanced, but also to better realize the implementation of the product through the adaptation of demand, and finally nurture the technology itself.

In smart door lock scenes, technical manufacturers not only provide the soft level of the algorithm, but also provide modules that can match products and help product hardware optimization.

The 3D-Faceid smart module "Chongming", which is more typical. The lighting scheme is also very important and key to match the industrial chain.

Of course, this industrial chain adaptation is returned. For the underlying AI algorithm, the wide product landing of smart door locks will continue to feedback and accelerate the iteration. As a scenario analogy, the first provincial provincial three -dimensional portrait recognition system in a frontier province has accumulated hundreds of millions of people. Massive actual data has continuously upgraded AI algorithm and hardware innovation, becoming a barrier that is difficult for latecomers to catch up.

The third step is to explore the application space of more 3D identification on the door lock products.

The refined reconstruction ability of 3D structured light also means that in addition to the "identity with the face", 3D vision has other aspects of exploration. For example, comprehensive information collection and three -dimensional reconstruction can obviously be applied to the body to the body In terms of identification, not only the face, but also the whole person.

After greatly solving security problems, the current smart door locks through 3D structural optical technology, and they are still trying to do action judgments, expressions, and behavior of behavior intention outside the "opening" to help achieve a better intelligent interactive experience. Smart door locks may be really smart.

Of course, under this technological expansion, the market space of 3D structured light will become larger, but the technology challenges will be more obvious. After all, both algorithms and hardware are designed for faces.

Conclusion

In 2021, the National Immigration Authority reached a cooperation with Lu Shen, the border inspection station project, and the latter at Xishuangbanna Border Management Detachment Xinghai inspection and deployment of 3D inspection station plan to connect the provincial platforms and immigration bureaus of the smart public security inspection station. Platforms to help identify and arrest personnel.

Under the global competition and severe data security, 3D structural optical technology recognized by sensitive fronts has actually been attached to the independent work, such as Lu Shen's 3D sensor camera module and the corresponding corresponding. Algorithms have independent intellectual property rights, which is an important background that has to be mentioned at a high -speed development in this field.

Looking back, it can guard the national gate and ensure data security. Of course, this technology is used on consumer -grade products such as smart door locks. Of course, it is not necessary to question and worry.

While allowing users to realize the "only world", the 3D structured light technology itself is also realizing the "only world" independence, which also makes this track a different starting point.

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