WO2020257968A1 - Identity validity authentication device, identity validity authentication method and access control system - Google Patents

Abstract

An identity validity authentication device, an identity validity authentication method and an access control system. The identity validity authentication device comprises: a human body induction sensor, configured to detect a living human body outside a door body; a 2D face image acquisition module, configured to capture a 2D face image when the human body induction sensor detects a living human body; a 3D face image acquisition module, configured to capture a 3D face image on the basis of structured light; a processor, configured to match the 2D face image with a 2D face image template and match the 3D face image with a 3D face image template, and when the 2D face image successfully matches the 2D face image template and the 3D face image successfully matches the 3D face image template, control a door lock driver to drive a door lock to unlock; a video recording module, configured to record a video within a visual field range when the 3D face image fails to match the 3D face image template and/or the 2D face image fails to match the 2D face image template; and a wireless network module, configured to send the recorded video.

Description

Identity legality authentication device, identity legality authentication method and access control system Technical field

The embodiments of the present application relate to the field of security technology, in particular to an identity legality authentication device, an identity legality authentication method, and an access control system.

Background technique

The access control system, as its name implies, is a system that controls the entrance and exit passages. It is developed on the basis of traditional door locks. The traditional mechanical door lock is just a simple mechanical device, no matter how reasonable the structural design and how strong the material is, people can always open it by various means. It is very troublesome to manage the keys in the passages with many people (such as offices, hotel rooms). If the key is lost or the personnel are changed, the lock and key must be replaced together.

To this end, verify the input password and card reading or card reading plus password in the access control system for legality authentication. However, as for the way of verifying the input password, the password is easy to leak, the security is not high, and the keys are easily damaged. For card reading or card reading plus password methods, whether it is a magnetic card or a video card, the card is easy to be copied, and the card information is easily lost due to the external magnetic field, making the card invalid, resulting in poor overall security and ease of use.

Summary of the invention

In view of this, one of the technical problems solved by the embodiments of the present application is to provide an identity legality authentication device, an identity legality authentication method, and an access control system to overcome the above-mentioned defects in the prior art.

The embodiment of the present application provides an identity legality authentication device, which includes:

Human body induction sensor, used to detect the human body outside the door;

The 2D face image acquisition module is configured to take 2D face image shooting when the human body sensing sensor detects the living human body;

3D face image acquisition module, based on structured light for 3D face image shooting;

A processor, configured to match the 2D face image with a 2D face image template and match the 3D face image with a 3D face image template, and when the 2D face image and the 2D face image When the template is successfully matched and the 3D face image and the 3D face image template are matched successfully, the door lock driver is controlled to drive the door lock to unlock;

A video recording module, configured to record a video of the field of view when the 3D face image and the 3D face image template are unsuccessfully matched, and/or the 2D face image and the 2D face image template are unsuccessfully matched;

The wireless network module is used to send the recorded video.

The embodiment of the present application provides an access control system, which includes a door lock, an identity legality authentication device, and a server, and the identity legality authentication device includes:

Human body induction sensor, used to detect the human body outside the door;

The 2D face image acquisition module is configured to take 2D face image shooting to match the 2D face image with a 2D face image template when the human body sensing sensor detects the living human body;

A 3D face image acquisition module, which performs 3D face image shooting based on structured light to match the 3D face image with a 3D face image template;

A processor that matches the 2D face image with a 2D face image template and matches the 3D face image with a 3D face image template, and when the 2D face image matches the 2D face image template When successful, and when the 3D face image and the 3D face image template are successfully matched, the door lock driver is controlled to drive the door lock to unlock;

The video recording module is used to record the field of view when the 3D face image is unsuccessfully matched with the 3D face image template, or when the 2D face image is unsuccessfully matched with the 2D face image template video;

The wireless network module is used to send the recorded video.

Optionally, in any embodiment of the present application, the wireless network module is further configured to receive a control instruction issued by the front end, and control the door lock driver to drive the door lock to unlock or maintain the lock.

Optionally, in any embodiment of the present application, the 2D face image acquisition module includes: an infrared image sensor and a flood illuminator, the flood illuminator is used to provide a narrowband infrared beam to illuminate the face, Furthermore, the infrared image sensor captures 2D face images.

Optionally, in any embodiment of the present application, the 3D face image acquisition module includes: an infrared image sensor and a dot matrix projector, and the dot matrix projector is used to provide a dot matrix structured light to project a human face, Furthermore, the infrared image sensor captures 3D face images.

Optionally, in any embodiment of the present application, the 3D face image acquisition module further includes: a dot matrix projection driver for driving the dot matrix projector to project dot matrix structured light.

Optionally, in any embodiment of the present application, the video recording module includes: an infrared image sensor and a color image sensor. The infrared image sensor is used to record black and white video based on infrared sensing structured light. The image sensor is used for color video recording based on RGB three primary color structured light.

Optionally, in any embodiment of the present application, it further includes: a distance sensor for sensing the distance between the living body of the human body and the door, and for controlling the 2D face image acquisition module according to the distance , The exposure time of the 3D face image acquisition module.

The embodiment of the present application also provides an identity legality authentication method, which includes:

Determine whether a living human body outside the door is detected;

When a living human body outside the door is detected, 2D face image shooting is performed to match the 2D face image with the 2D face image template;

Shooting a 3D face image based on structured light to match the 3D face image with a 3D face image template;

When the 2D face image and the 2D face image template are successfully matched, and when the 3D face image and the 3D face image template are matched successfully, controlling the door lock driver to drive the door lock to unlock;

When the 3D face image and the 3D face image template are unsuccessfully matched, or when the 2D face image and the 2D face image template are unsuccessfully matched, recording a video of the field of view range;

Upload the recorded video to the server to be sent by the server to the front end.

Optionally, in any embodiment of the present application, the method further includes: receiving a control instruction issued by the front end to control the door lock driver to drive the door lock to unlock or maintain the lock.

Optionally, in any embodiment of the present application, taking 2D face image shooting includes: providing a narrow-band infrared light beam to illuminate the face, and then taking 2D face image shooting.

Optionally, in any embodiment of the present application, performing 3D face image shooting includes: providing a lattice structured light to project the face, and then performing 3D face image shooting.

Optionally, in any embodiment of the present application, recording a video in the field of view includes: recording a black and white video based on infrared sensing structured light, and/or recording a color video based on RGB three primary color structured light.

Optionally, in any embodiment of the present application, the method further includes: sensing the distance between the living human body and the door, so as to control the exposure time of 2D face image collection and 3D face image collection according to the distance.

In the embodiment of the present application, since the living human body outside the door can be detected by the human body induction sensor; when the living human body is detected, the 2D face image acquisition module performs 2D face image shooting to combine the 2D face image with the 2D face image. The face image template is matched, and the 3D face image acquisition module performs 3D face image shooting based on structured light to match the 3D face image with the 3D face image template; when the 2D face image and the 2D face image When the image template is matched successfully, and when the 3D face image and the 3D face image template are matched successfully, the door lock driver is controlled to drive the door lock to unlock; when the 3D face image and the 3D face image template are not matched successfully, or When the 2D face image and the 2D face image template are unsuccessfully matched, the video recording module records the video in the field of view; the wireless network module sends the recorded video to the front end or uploads it to the server, and the server sends it to the front end For example, it performs verification and receives control instructions from the front end to control the door lock driver to drive the door lock to unlock or keep the lock. It can be seen that the technical solution provided by the embodiments of the present application is actually based on the user's facial biometrics, which avoids the existing In the technology, the password is easy to forget, or the card is easy to lose, which can cause inconvenience in use. In addition, at the same time, 2D face image acquisition and recognition and preferably structured light-based 3D face image acquisition and recognition improve the security of the access control system.

Description of the drawings

Hereinafter, some specific embodiments of the embodiments of the present application will be described in detail in an exemplary but not restrictive manner with reference to the accompanying drawings. The same reference numerals in the drawings indicate the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the attached picture:

Figure 1 is a schematic diagram of the structure of the access control system in the first embodiment of the application;

2 is a schematic diagram of the structure of the identity legality authentication device in the second embodiment of this application;

3 is a schematic diagram of the structure of the access control system in the third embodiment of the application;

FIG. 4 is a schematic flowchart of the method for verifying identity legality in Embodiment 4 of this application.

Detailed ways

The implementation of any technical solution of the embodiments of the present application does not necessarily need to achieve all the above advantages at the same time.

In the embodiments of the present application, it is possible to: a human body induction sensor for detecting a living human body outside the door; a 2D face image acquisition module for performing a 2D face image when the human body is detected by the human body induction sensor Image shooting; 3D face image acquisition module, based on structured light for 3D face image shooting; processor, used to match the 2D face image with the 2D face image template and compare the 3D face image with the 3D face image The face image template is matched, and when the 2D face image and the 2D face image template are matched successfully and the 3D face image and the 3D face image template are matched successfully, the door lock driver is controlled to drive the door lock to unlock; video The recording module is configured to record a video of the field of view when the 3D face image and the 3D face image template are unsuccessfully matched, and/or the 2D face image and the 2D face image template are unsuccessfully matched; Network module for sending recorded video. The identity legality authentication device avoids the inconvenience caused by the easy forgotten password or easy loss of the card in the prior art. In addition, it is based on 2D face image acquisition and recognition and preferably based on structured light 3D face image acquisition and recognition, thereby The security of the access control system is improved. In fact, it is based on the user's facial biometrics, which avoids the inconvenience caused by the easy forgetting of the password or the easy loss of the card in the prior art. In addition, it is based on 2D facial image collection and recognition and optimization. The 3D face image collection and recognition based on structured light improves the security of the access control system.

Figure 1 is a schematic structural diagram of the access control system in Embodiment 1 of the application; as shown in Figure 1, it includes a door lock, an identity legality authentication device, and a server.

Wherein, the identity legality authentication device includes:

Human body induction sensor, used to detect the human body outside the door;

The 2D face image acquisition module is configured to take 2D face image shooting when the human body is detected by the human body induction sensor;

3D face image acquisition module, based on structured light for 3D face image shooting;

A processor, configured to match the 2D face image with a 2D face image template and match the 3D face image with a 3D face image template, and when the 2D face image and the 2D face image When the template matching is successful, and when the 3D face image and the 3D face image template are successfully matched, controlling the door lock driver to drive the door lock to unlock;

A video recording module, configured to record a video of the field of view when the 3D face image and the 3D face image template are unsuccessfully matched or the 2D face image and the 2D face image template are unsuccessfully matched;

The wireless network module is used to send the recorded video (the purpose includes but not limited to verification, or as evidence to identify suspicious persons); for example, upload the recorded video to the server to send the server to the front end; or, fail The server sends it directly to the front end. Further, the wireless network module can also receive a control instruction sent by the front end, the control instruction is used to control the door lock driver to drive the door lock to unlock or keep the lock, for example.

Figure 2 is a schematic structural diagram of the identity legality authentication device in the second embodiment of the application; as shown in Figure 2, the same as the above embodiment, taking into account the needs of specific implementation, the 2D human face in the identity legality authentication device The image acquisition module, the 3D face image acquisition module, and the video recording module each include specific modules.

Specifically, the 2D face image acquisition module includes: an infrared image sensor and a flood illuminator, the flood illuminator is used to provide a narrow-band infrared light beam to illuminate the face, so that the infrared image sensor can perform 2D face image For shooting, the wavelength of the narrow-band infrared beam is, for example, 940 nm, or the wavelength is sufficient to illuminate the human face.

Specifically, the 3D face image acquisition module includes: an infrared image sensor and a dot-matrix projector, the dot-matrix projector is used to provide a dot-matrix structured light to project the face, so that the infrared image sensor can perform 3D face image Shoot.

Optionally, in any embodiment of the present application, the 3D face image acquisition module further includes: a dot matrix projection driver (not shown in the figure) for driving the dot matrix projector to project the dot matrix structure Light.

Specifically, the video recording module includes: an infrared image sensor and a color image sensor, the infrared image sensor is used to record black and white video based on infrared sensing structured light, and the color image sensor is used to perform color based on RGB three primary color structured light Video recording.

Further, on the basis of the foregoing embodiment, the identity legality verification device may further include: a distance sensor for sensing the distance between a living human body and a door, and for controlling the 2D face according to the distance The exposure time of the image acquisition module and the 3D face image acquisition module.

Figure 3 is a schematic structural diagram of the access control system in the third embodiment of the application; as shown in Figure 3, it includes: a human sensor, a 2D face image acquisition module, a 3D face image acquisition module, a video recording module, a wireless network module, Distance sensor, processor, door lock and door lock driver, storage unit, interaction unit. The structures of the 2D face image acquisition module, 3D face image acquisition module, and video recording module are the same as those recorded in FIG. 2.

Specifically, in this embodiment, the human sensor, 2D face image acquisition module, 3D face image acquisition module, video recording module, and distance sensor are packaged together to form a structured light module as a whole; in addition, door locks and door locks The driver constitutes the door lock switch mechanism.

In addition, considering the application in door locks, the processor is preferably an embedded processor. Further, the embedded processor includes a control unit and an arithmetic unit. The arithmetic unit combines the 2D face image with the 2D The face image template is matched, or the 3D face image is matched with the 3D face image template, the control unit is further configured to control the door lock switch structure to unlock or maintain the locked state according to the matching result output by the computing unit, and The interaction unit performs human-computer interaction.

Further, this embodiment also includes an interactive unit, such as a speaker for voice reminder broadcast, a touch screen with a display and can be touched, and so on.

Fig. 4 is a schematic flowchart of the identity legality authentication method in the fourth embodiment of the application; as shown in Fig. 4, it includes:

S400, human body induction sensor collects monitoring data;

In this embodiment, as described above, the monitoring data is generated by monitoring the living body outside the portal.

S401. Determine whether a living human body outside the door is detected;

Step S402A is executed when a living body outside the door is detected.

In this embodiment, the human body sensor intermittently monitors whether someone passes and stays. Specifically, the human body sensing sensor may be a thermal infrared sensor. The thermal infrared sensor can specifically include a lens, a photosensitive element, a photosensitive circuit, a mechanical part and a mechanical control part. Through the mechanical control part and the mechanical part, the infrared sensor part is driven to make a tiny left-right or circular motion, and move the position, so that the sensor and the human body can form a relative movement. Therefore, regardless of whether the human body is moving or stationary, the photosensitive element can generate a polarization pressure difference, and the photosensitive circuit sends out a human identification signal to achieve the purpose of detecting the human body.

S402: Perform 2D face image shooting to match the 2D face image with a 2D face image template;

Optionally, in an application scenario, in order to improve the shooting quality of the 2D face image, a narrow-band infrared beam is provided to illuminate the face when the 2D face image is shot, and then the 2D face image is shot.

Further, the narrow-band infrared beam can be provided by the above flood illuminator, which provides highly diffuse, non-directional light instead of a clear beam, which is especially suitable for shooting 2D face images in a poor light environment.

In this embodiment, in order to reduce the power consumption of image collection, in step 402A, the distance sensor is used to sense the distance between the human body and the door, so as to control the exposure time of the infrared image sensor for 2D face image collection according to the distance, and Reduce the time to collect 2D face images and improve the overall performance of the system.

S403: Determine whether the 2D face image matches the 2D face image template;

S404: When the 2D face image and the 2D face image template are successfully matched, 3D face image shooting is performed based on structured light to match the 3D face image with the 3D face image template;

In this embodiment, as mentioned above, if 2D face recognition is performed locally in the door lock, the identity legality verification device includes a memory on which a 2D face image template is stored, and the 2D face image face template passes The face template registration process is obtained.

If the 2D face image is successfully matched with the 2D face image template, it is preliminarily indicated that the identity of the living human body is legal.

In this embodiment, when the 3D face image is captured in step S404, the dot matrix structured light is provided to form the speckle structured light to project the face, and then the 3D face image is captured. In this embodiment, when the 2D face image and the 2D face image template are unsuccessfully matched, it preliminarily indicates that the living human body does not have the permission to pass through the access control channel, but it is not necessarily illegal. In addition, in this embodiment, 3D face image shooting based on lattice structured light is added to further perform anti-counterfeiting recognition of the face. Through the matching of the 3D face image and the 3D face image template, it is further determined whether Illegal, thereby improving the accuracy of identity verification.

Here, there is no unique limitation on the structured light, and it may actually be coded structured light or striped structured light.

In this embodiment, in step 404, the distance sensor is used to sense the distance between the human body and the door, so as to control the exposure time of the infrared image sensor for 3D face image collection according to the distance, and reduce the time for collecting 3D face images , Improve the overall performance of the system.

Here, it should be noted that the infrared image sensor for 2D face image collection and 3D face image collection can be shared or separately configured.

S405: Determine whether the 3D face image matches the 3D face image template;

When the 3D face image and the 3D face image template are not matched successfully, or when the 2D face image and the 2D face image template are not matched successfully, perform the following step S406;

S406: Record a video in the field of view;

In this embodiment, recording the video of the field of view in step S406 includes: recording black and white video based on infrared sensing structured light, and/or recording color video based on RGB three primary color structured light.

S406B. When the 3D face image and the 3D face image template are successfully matched, control the door lock driver to drive the door lock to unlock;

S407: Upload the recorded video to the server to be sent by the server to the front end for verification, and receive a control instruction issued by the front end to control the door lock driver to drive the door lock to unlock or keep the lock.

Here, it should be noted that if the 3D face recognition shows that the human body is illegal, the authority to open the access control is handed over to human control. The specific human control is implemented through the APP on the front-end electronic device. On the above, the access control administrator thinks that the access control can be opened, and then operates on the front-end APP to generate a remote control instruction to the server, and the server sends the remote control instruction to the embedded processor to control the opening of the access control.

Specifically, the interaction between the access control system and the front end is realized through a wireless network module, and the wireless network module such as a wifi module is connected to the home router.

Here, it should be noted that the access control system in the above embodiment includes various passages that can pass, including doors for people to pass, doors for vehicles to pass, and so on. Such as banks, hotels, parking lot management, computer rooms, armory, confidential rooms, office rooms, intelligent communities, factories, etc.

Here, it should be noted that, in the embodiment in FIG. 4, the 3D face image is photographed and matched after the 2D face image and the 2D face image template are successfully matched. However, in other embodiments, 3D face image shooting and matching may not depend on the judgment result of the successful matching of the 2D face image with the 2D face image template, and it may also be parallel to the 2D face image shooting. And matching. Correspondingly, when the 2D face image and the 2D face image template are matched successfully and the 3D face image and the 3D face image template are matched successfully, the door lock driver is controlled to drive the door lock to unlock.

In this embodiment, the above-mentioned identity legality authentication device can also be integrated into any electronic equipment, which includes but is not limited to:

(1) Mobile communication equipment: This type of equipment is characterized by mobile communication functions, and its main goal is to provide voice and data communications. Such terminals include: smart phones (such as iPhone), multimedia phones, functional phones, and low-end phones.

(2) Ultra-mobile personal computer equipment: This type of equipment belongs to the category of personal computers, has calculation and processing functions, and generally also has mobile Internet features. Such terminals include: PDA, MID and UMPC devices, such as iPad.

(3) Portable entertainment equipment: This type of equipment can display and play multimedia content. Such devices include: audio, video players (such as iPod), handheld game consoles, e-books, as well as smart toys and portable car navigation devices.

(4) Other electronic devices with data interaction functions.

So far, specific embodiments of the subject matter have been described. Other embodiments are within the scope of the appended claims. In some cases, the actions recited in the claims can be performed in a different order and still achieve desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or sequential order shown in order to achieve the desired result. In certain embodiments, multitasking and parallel processing may be advantageous.

The systems, devices, modules, or units illustrated in the above embodiments may be specifically implemented by computer chips or entities, or implemented by products with certain functions. A typical implementation device is a computer. Specifically, the computer may be, for example, a personal computer, a laptop computer, a cell phone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or Any combination of these devices.

For the convenience of description, when describing the above device, the functions are divided into various units and described separately. Of course, when implementing this application, the functions of each unit can be implemented in the same one or more software and/or hardware.

Those skilled in the art should understand that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, this application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

This application is described with reference to flowcharts and/or block diagrams of methods, equipment (systems), and computer program products according to the embodiments of this application. It should be understood that each process and/or block in the flowchart and/or block diagram, and the combination of processes and/or blocks in the flowchart and/or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing equipment to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing equipment are generated It is a device that realizes the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device. The device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment. The instructions provide steps for implementing functions specified in a flow or multiple flows in the flowchart and/or a block or multiple blocks in the block diagram.

In a typical configuration, the computing device includes one or more processors (CPU), input/output interfaces, network interfaces, and memory.

The memory may include non-permanent memory in computer readable media, random access memory (RAM) and/or non-volatile memory, such as read-only memory (ROM) or flash memory (flash RAM). Memory is an example of computer readable media.

Computer-readable media include permanent and non-permanent, removable and non-removable media, and information storage can be realized by any method or technology. The information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer storage media include: but not limited to phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, CD-ROM, digital versatile disc (DVD) or other optical storage, Magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media can be used to store information that can be accessed by computing devices. According to the definition in this article, computer-readable media does not include transitory media, such as modulated data signals and carrier waves.

It should also be noted that the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, product or equipment including a series of elements not only includes those elements, but also includes Other elements that are not explicitly listed, or include elements inherent to this process, method, commodity, or equipment. If there are no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other identical elements in the process, method, commodity or equipment including the element.

Those skilled in the art should understand that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, this application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, this application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

This application may be described in the general context of computer-executable instructions executed by a computer, such as program modules. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform specific transactions or implement specific abstract data types. This application can also be practiced in distributed computing environments. In these distributed computing environments, remote processing devices connected through a communication network execute transactions. In a distributed computing environment, program modules can be located in local and remote computer storage media including storage devices.

The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, as for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and for related parts, please refer to the part of the description of the method embodiment.

The above descriptions are only examples of this application and are not used to limit this application. For those skilled in the art, this application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the scope of the claims of this application.

Claims (20)

An identity legality authentication device, characterized in that it comprises: Human body induction sensor, used to detect the human body outside the door; The 2D face image acquisition module is configured to take 2D face image shooting when the human body sensing sensor detects the living human body; 3D face image acquisition module, based on structured light for 3D face image shooting; A processor, configured to match the 2D face image with a 2D face image template and match the 3D face image with a 3D face image template, and when the 2D face image and the 2D face image When the template is successfully matched and the 3D face image and the 3D face image template are matched successfully, the door lock driver is controlled to drive the door lock to unlock; A video recording module, configured to record a video of the field of view when the 3D face image and the 3D face image template are unsuccessfully matched, and/or the 2D face image and the 2D face image template are unsuccessfully matched; The wireless network module is used to send the recorded video. The device according to claim 1, wherein the wireless network module is further configured to receive a control instruction issued by the front end, and control the door lock driver to drive the door lock to unlock or keep the lock. The device according to claim 1, wherein the 2D face image acquisition module comprises an infrared image sensor and a flood illuminator, and the flood illuminator is used to provide a narrow-band infrared light beam to illuminate the face, and then The infrared image sensor captures 2D face images. The device according to claim 1, wherein the 3D face image acquisition module comprises: an infrared image sensor and a dot matrix projector, the dot matrix projector is used to provide a dot matrix structured light to project the face, and then The infrared image sensor captures 3D face images. The device according to claim 4, wherein the 3D face image acquisition module further comprises: a dot matrix projection driver for driving the dot matrix projector to project dot matrix structured light. The device according to claim 1, wherein the video recording module comprises an infrared image sensor and a color image sensor, the infrared image sensor is used to record black and white video based on infrared sensing structured light, and the color image The sensor is used for color video recording based on RGB three primary color structured light. The device according to claim 1, further comprising: a distance sensor for sensing the distance between the living body of the human body and the door, and for controlling the 2D face image acquisition module according to the distance, The exposure time of the 3D face image acquisition module. A method for authenticating identity legality, characterized in that it includes: Determine whether a living human body outside the door is detected; When a living human body outside the door is detected, 2D face image shooting is performed to match the 2D face image with the 2D face image template; Shooting a 3D face image based on structured light to match the 3D face image with a 3D face image template; When the 2D face image and the 2D face image template are successfully matched and when the 3D face image and the 3D face image template are matched successfully, controlling the door lock driver to drive the door lock to unlock; When the 3D face image and the 3D face image template are unsuccessfully matched or when the 2D face image and the 2D face image template are unsuccessfully matched, recording a video of the field of view; Send the recorded video. The method according to claim 8, further comprising: receiving a control instruction issued by the front end to control the door lock driver to drive the door lock to unlock or maintain the lock. The method according to claim 8, characterized in that the 2D face image shooting comprises: providing a narrowband infrared light beam to illuminate the face, and then the 2D face image shooting. The method according to claim 8, wherein the shooting of a 3D face image comprises: providing a lattice structured light to project the face, and then shooting the 3D face image. The method according to claim 8, wherein recording a video in the field of view includes: recording a black and white video based on infrared sensing structured light, and/or recording a color video based on RGB three primary color structured light. The method according to claim 8, further comprising: sensing the distance between the living body of the human body and the door body to control the exposure time of the 2D face image collection and the 3D face image collection according to the distance. An access control system is characterized by comprising a door lock, an identity legality authentication device, and a server, and the identity legality authentication device includes: Human body induction sensor, used to detect the human body outside the door; The 2D face image acquisition module is configured to take 2D face image shooting to match the 2D face image with a 2D face image template when the human body sensing sensor detects the living human body; A 3D face image acquisition module, which performs 3D face image shooting based on structured light to match the 3D face image with a 3D face image template; A processor for matching the 2D face image with a 2D face image template and matching the 3D face image with a 3D face image template, and when the 2D face image matches the 2D face image template When it succeeds, and when the 3D face image and the 3D face image template match successfully, control the door lock driver to drive the door lock to unlock; The video recording module is used to record the field of view when the 3D face image is unsuccessfully matched with the 3D face image template, or when the 2D face image is unsuccessfully matched with the 2D face image template video; The wireless network module is used to send the recorded video. The system according to claim 14, wherein the wireless network module is further configured to receive a control instruction issued by the front end to control the door lock driver to drive the door lock to unlock or maintain the lock. The system according to claim 14, wherein the 2D face image acquisition module comprises: an infrared image sensor and a flood illuminator, the flood illuminator is used to provide a narrowband infrared light beam to illuminate the face, and then The infrared image sensor captures 2D face images. The system according to claim 14, wherein the 3D face image acquisition module comprises an infrared image sensor and a dot matrix projector, and the dot matrix projector is used to provide a dot matrix structured light to project the face, and then The infrared image sensor captures 3D face images. The system according to claim 17, wherein the 3D face image acquisition module further comprises: a dot matrix projection driver for driving the dot matrix projector to project dot matrix structured light. The system according to claim 14, wherein the video recording module comprises: an infrared image sensor and a color image sensor, the infrared image sensor is used to record black and white video based on infrared sensing structured light, the color image The sensor is used for color video recording based on RGB three primary color structured light. The system according to claim 14, further comprising: a distance sensor for sensing the distance between the living body of the human body and the door, and for controlling the 2D face image acquisition module according to the distance, The exposure time of the 3D face image acquisition module.

Images