CN201917921U - Face monitoring and recognizing system for large assembly places - Google Patents
Face monitoring and recognizing system for large assembly places Download PDFInfo
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- CN201917921U CN201917921U CN2010202818657U CN201020281865U CN201917921U CN 201917921 U CN201917921 U CN 201917921U CN 2010202818657 U CN2010202818657 U CN 2010202818657U CN 201020281865 U CN201020281865 U CN 201020281865U CN 201917921 U CN201917921 U CN 201917921U
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Abstract
The utility model relates to a face monitoring and recognizing system for large assembly places. The face monitoring and recognizing system comprises a monitoring camera, an embedded intelligent picture capturing device, a hard disc video recorder, a dynamic picture comparison unit, a picture storage and search unit, a data synchronizing unit and an integrated management unit. The system is used for collecting the pictures of people in large assembly places, capturing the face pictures, comparing the face pictures with the pictures of blacklist in the background database, and performing real-time alarming, so as to guarantee the safety of the monitored places. The system also has the functions of picture processing, storage, search, self management and the like, and can be widely applied to monitor and recognize the faces of large assembly places and other places.
Description
Technical field
The utility model belongs to recognition of face monitoring technique field, particularly big assembly place recognition of face monitoring technique.
Background technology
Current economy develops on a large scale, personnel are mobile greatly,
FinanceCrisis is impacted down, and social various contradictions generally rise, and Mass disturbance is frequent, adds that the criminal offense means are intelligent day by day, professional, systematism, and the situation that social security faces is complicated severe.Limited again in current police strength, it is not all right far away to know supervision crime, act of violating regulations artificially clearly, and this just urges public security department will want police strength to science and technology, want fighting capacity, constructs perfect online optimal in structure, fight capability on the reinforcing mat is established and improve public security information operation new mechanism.
There are present situations such as the monitoring region is wide, device distribution is scattered, number of devices is of a great variety in the big-and-middle-sized monitoring project of public security, standalone version client control platform use saliency weak, the problem such as monitoring alarm resource coverage rate is little of user management difficulty, compatible extendability, illustrate that the standalone version client can not satisfy medium-and-large-sized monitoring demand, what need is large-scale centralized formula monitoring management platform.It not only needs to bear the tasks such as high power capacity control point access, smooth expansion of supporting, also need to realize following function: as the multistage multi-joint network monitoring in city, unified insert deal with emergencies and dangerous situations, whole coverings, the comprehensive commander of shunting, monitoring alarm resource automatically, distributed management to the forwarding of video flowing, concentrate that video recording, equipment alarm are handled, large data storage backup etc. independently.
The large-scale activity security work faces following problem:
1, artificial being difficult to realized the identification to special personnel efficiently to region-wide, the round-the-clock monitoring of monitoring image.
The large-scale activity longer duration, it is many to import and export sum, needs time length, the zone of monitoring wide.Rely on traditional artificial " stare at and keep " mode of deploying to ensure effective monitoring and control of illegal activities can't be, carry out the time consuming monitoring like this work of deploying to ensure effective monitoring and control of illegal activities,, rely on artificial the examination to be difficult to reach actual demand merely for the identification mission that is mixed in special personnel out front in like this big zone.
2, spurious is handled certificate, and is hard to distinguish between the true and false, given the special personnel opportunity, must firmly be stopped.
Among the numerous exhibiter of large-scale activity, visitor, volunteer, journalist, staff, can't get rid of terrorist, hostile force, separation of nationalities molecule or delinquent personnel that some is wherein arranged with the shielding of legal identity do.If can not effectively screen its identity and stop employee's card and behavior such as use mutually, the large-scale activity garden will face serious security threat.
3, certificate is abused, and has strengthened the access and exit control difficulty of staffs only.
Present numerous input-output control system all be with card for the people, as long as hold the certificate of mandate no matter whether be accredited I, can unimpededly come in and go out, this brings opportunity to unauthorized person.
4, the utilization factor of the monitor video of magnanimity is low, is difficult to satisfy the needs of post-survey.
Supervisory system is the important component part of existing security system, and the monitoring video that it produces also is an important evidence of handling public security, criminal case.In the large-scale activity garden thousands of rig cameras will be installed, during very long large-scale activity, will stay the video data of magnanimity.
But according to practical experience, existing video monitoring can't write down people's face clearly.Even collect features such as suspect's dress ornament, gait in a plurality of monitoring videos, we but can't obtain to have most the foundation of quantity of information: human face photo.How the safety-protection system front end being designed, is the problem that the necessary emphasis of safety-protection system design is considered to guarantee to collect the video that satisfies public security, criminal investigation case investigation needs.In addition, how efficiently utilizing the video data of magnanimity, also is the difficult problem that we must solve.
At the problems referred to above and according to present technical development, dispose portrait collection and comparison system in the large-scale activity garden, the personnel that enter the large-scale activity garden are carried out portrait collection, comparison, storage, guarantee to enter the garden visitor's identity legitimacy and staff's identity validity, reduce Security Personnel's labour intensity, promote security work efficient, assist the Security Personnel to prevent that a bad actor from sneaking into effectively.
Portrait recognition technology is a kind of biometrics identification technology that carries out identification according to people's facial information.This technology is the present the most suitable large-scale activity place a kind of identification and the monitoring technique that carry out identification, and this technology need not the target people and cooperates with on one's own initiative, and system will discern early warning automatically when the place of quilt concern person by deploying to ensure effective monitoring and control of illegal activities.
After collection of large-scale activity portrait and comparison system put into operation, each clear face-image through the visitor of system monitoring point will be gathered automatically, and compare early warning immediately with the monitored object in the system, it is legal to guarantee to enter personnel identity, and staff's " testimony of a witness unification "; Preserve scene photograph simultaneously, so that inquiry evidence obtaining afterwards.System can move in 24 hours incessantly, effectively stopped the safety omission that manual monitoring fatigue is brought.
Summary of the invention
Many at above-mentioned large-scale place personnel, the actual state that guarded region is big, monitoring period is long, the utility model provides a kind of people's face monitoring recognition system that is used for the big assembly place, solve that the monitoring of simple labor intensive is not enough, cost is too high, and comparison in time, examination fast, inquiry is followed the tracks of to wait afterwards needs.
Concrete technical scheme of the present utility model is: a kind of people's face monitoring recognition system that is used for the big assembly place by rig camera, embedded intelligence portrait survey catch device, DVR, dynamically portrait comparing unit, portrait storage and retrieval unit, data synchronisation unit, integrated management unit are formed.
Rig camera, the scene that is used to take the marketplace gateway;
The embedded intelligence portrait is surveyed and is caught device, uses and capture facial image automatically from the scene that rig camera is taken;
DVR is used to preserve the video record that rig camera is taken;
Dynamic portrait comparing unit is used for that the facial image of device candid photograph is caught in the survey of embedded intelligence portrait and the blacklist portrait of background data base is compared, and realizes Realtime Alerts.
Portrait storage and retrieval unit is used to store the embedded intelligence portrait and surveys the face images of catching the device candid photograph, forms visitor's portrait storehouse, and carries out the portrait retrieval according to demand in this storehouse.Data synchronous system is used for carrying out the data sync transmission between each system.
Data synchronisation unit is used for carrying out the data sync transmission at each unit finger tip.
The integrated management unit is used for disposing, managing other system.
Described rig camera adopts the CCD camera of D1 resolution.
Described embedded intelligence portrait survey is caught device and is comprised analog video input interface, network interface, analog video output interface.
The analog video input interface is used for receiving video signals;
Network interface is used to carry out the output of parameter configuration and people's image signal;
The analog video output interface is used to send the vision signal of stack portrait.
DVR can be stored the video record that multichannel reaches moon number, and can carry out playback.
Dynamically portrait contrast unit comprises equipment access module, personnel's database management module, portrait comparison service module, alarm indication module.
The equipment access module receives the embedded intelligence portrait and surveys the facial image of catching the device transmission;
Personnel's database management module is responsible for safeguarding blacklist portrait feature list;
Portrait comparison service module, the facial image that the equipment access module is received with and list in portrait compare the output comparison result;
The alarm indication module is compared portrait the comparison result of service module output and is showed by the form of sound, image.
Portrait storage and retrieval unit comprises a portrait memory module, index generation module, comparison controller, a plurality of comparison server, a plurality of comparing unit, a transport module.
A portrait memory module is stored all visitor's portraits and feature;
An index generation module is set up index to the data in the portrait memory module, is convenient to inquiry;
A comparison controller is responsible for resolving the retrieval tasks that total management system is initiated, and sends retrieval command to the comparison server, gathers the result for retrieval that obtains from the comparison server, returns to total management system;
A plurality of comparison servers are responsible for receiving the retrieval command that the comparison controller sends, and are transmitted to a plurality of comparing units of subordinate, gather the result for retrieval that obtains from comparing unit, and the comparison controller is given in passback;
A plurality of comparing units are responsible for receiving the retrieval command that the comparison server sends, and compare with the portrait that self loads, and return comparison result and give the comparison server;
A transport module sends the data in the portrait memory module to comparing unit.
Described data synchronisation unit comprises the synchronization module of the synchronization module of dynamic portrait comparing unit and portrait storage and retrieval unit, dynamic portrait comparing unit and integrated management unit.
The integrated management unit comprises disposes administration module, monitoring objective administration module, portrait retrieval module, log management module, authority management module, data management module, Configuration Manager, integrated data base.
Dispose administration module, be responsible for the logic of each subsystem and dispose, parameter configuration, clock synchronization reflects each subsystem ruuning situation;
The monitoring objective administration module is managed the used monitoring objective storehouse of dynamic portrait comparison system;
The portrait retrieval module, submitter's picture retrieval comparison operation, the management of total system miscellaneous service operation and priority regulation and control, the inquiry afterwards of miscellaneous service charge book;
Log management module, management and monitoring target alarm log, the daily record of visitor's portrait, equipment state daily record;
Authority management module is managed the login user and the user right of each subsystem;
Data management module, various system configuration parameters, the backup of system operational parameters and reduction;
Configuration Manager, the dictionary table that the management native system uses;
Integrated data base, be responsible for storage total management system specific information and with the mutual information of other system.
Description of drawings
Fig. 1 is a kind of composition synoptic diagram that is used for people's face monitoring recognition system in big assembly place.
Fig. 2 is that dynamic portrait comparing unit is formed synoptic diagram.
Fig. 3 is that synoptic diagram is formed in portrait storage and retrieval unit.
Fig. 4 forms synoptic diagram for the integrated management unit.
Fig. 5 is dynamic portrait comparison workflow synoptic diagram.
Fig. 6 is accredited personnel's portrait comparison workflow synoptic diagram.
Fig. 7 is the operation institutional framework of large-scale activity portrait collection with the comparison system.
The large-scale activity portrait is gathered with the comparison system and is constituted synoptic diagram.
Wherein, 1, a kind of people's face monitoring recognition system that is used for the big assembly place,
101, rig camera,
102, the embedded intelligence portrait is surveyed and is caught device,
103, DVR,
104, dynamic portrait comparing unit,
105, portrait storage and retrieval unit,
106, data synchronisation unit,
107, integrated management unit,
1021, analog video input interface,
1022, network interface,
1023, analog video output interface,
1041, equipment access module,
1042, personnel's database management module,
1043, portrait comparison service module,
1044, alarm indication module,
1051, portrait memory module,
1052, index generation module,
1053, comparison controller,
1054, a plurality of comparison servers,
1055, a plurality of comparing units,
1056, transport module,
1061, the synchronization module of dynamic portrait comparing unit and portrait storage and retrieval unit,
1062, the synchronization module of dynamic portrait comparing unit and integrated management unit,
1071, dispose administration module,
1072, monitoring objective administration module,
1073, portrait retrieval module,
1074, log management module,
1075, authority management module,
1076, data management module,
1077, Configuration Manager,
1078, integrated data base,
11, operation command centre,
12, command centre of Guoan,
13, certificate management center,
14, gateway duty room,
15, visitor's safety check group,
16, certificates checking group.
Embodiment
Embodiment one
Shown in the accompanying drawing 1, a kind of composition synoptic diagram that is used for people's face monitoring recognition system in big assembly place.A kind of people's face monitoring recognition system (1) that is used for the big assembly place by rig camera (101), embedded intelligence portrait survey catch device (102), DVR (103), dynamically portrait comparing unit (104), portrait storage and retrieval unit (105), data synchronisation unit (106), integrated management unit (107) are formed.
Rig camera (101), the scene that is used to take the marketplace gateway;
The embedded intelligence portrait is surveyed and is caught device (102), uses and capture facial image automatically from the scene that rig camera is taken;
DVR (103) is used to preserve the video record that rig camera is taken;
Dynamic portrait comparing unit (104) is used for that the facial image of device candid photograph is caught in the survey of embedded intelligence portrait and the blacklist portrait of background data base is compared, and realizes Realtime Alerts.
Portrait storage and retrieval unit (105) is used to store the embedded intelligence portrait and surveys the face images of catching the device candid photograph, forms visitor's portrait storehouse, and carries out the portrait retrieval according to demand in this storehouse.Data synchronous system is used for carrying out the data sync transmission between each system.
Data synchronisation unit (106) is used for carrying out the data sync transmission at each unit finger tip.
Integrated management unit (107) is used for disposing, managing other system.
Described rig camera (101) adopts the CCD camera of D1 resolution.
Described embedded intelligence portrait survey is caught device (102) and is comprised analog video input interface (1021), network interface (1022), analog video output interface (1023).
(1021) the analog video input interface is used for receiving video signals;
Network interface (1022) is used to carry out the output of parameter configuration and people's image signal;
Analog video output interface (1023) is used to send the vision signal of stack portrait.
DVR (103) can be stored 16 the tunnel and be reached 30 days video record, and can carry out playback.
Shown in the accompanying drawing 2, dynamically synoptic diagram is formed in portrait contrast unit.Dynamically portrait contrast unit (104) comprises equipment access module (1041), personnel's database management module (1042), portrait comparison service module (1043), alarm indication module (1044).
(1041) equipment access module receives the embedded intelligence portrait and surveys the facial image of catching the device transmission;
(1042) personnel's database management module is responsible for safeguarding blacklist portrait feature list;
(1043) portrait comparison service module, the facial image that the equipment access module is received with and list in portrait compare the output comparison result;
(1044) alarm indication module is compared portrait the comparison result of service module output and is showed by the form of sound, image.
Shown in the accompanying drawing 3, synoptic diagram is formed in portrait storage and retrieval unit.Portrait storage and retrieval unit (105) comprises a portrait memory module (1051), an index generation module (1052), a comparison controller (1053), a plurality of comparison server (1054), a plurality of comparing unit (1055), a transport module (1056).
A portrait memory module is stored all visitor's portraits and feature;
An index generation module is set up index to the data in the portrait memory module, is convenient to inquiry;
A comparison controller is responsible for resolving the retrieval tasks that total management system is initiated, and sends retrieval command to the comparison server, gathers the result for retrieval that obtains from the comparison server, returns to total management system;
A plurality of comparison servers are responsible for receiving the retrieval command that the comparison controller sends, and are transmitted to a plurality of comparing units of subordinate, gather the result for retrieval that obtains from comparing unit, and the comparison controller is given in passback;
A plurality of comparing units are responsible for receiving the retrieval command that the comparison server sends, and compare with the portrait that self loads, and return comparison result and give the comparison server;
A transport module sends the data in the portrait memory module to comparing unit.
Described data synchronisation unit (106) comprises the synchronization module (1062) of the synchronization module (1061) of dynamic portrait comparing unit and portrait storage and retrieval unit, dynamic portrait comparing unit and integrated management unit.
Shown in the accompanying drawing 4, synoptic diagram is formed in the integrated management unit.Integrated management unit (107) comprises disposes administration module (1071), monitoring objective administration module (1072), portrait retrieval module (1073), log management module (1074), authority management module (1075), data management module (1076), Configuration Manager (1077), integrated data base (1078).
Dispose administration module (1071), be responsible for the logic of each subsystem and dispose, parameter configuration, clock synchronization reflects each subsystem ruuning situation;
Monitoring objective administration module (1072) is managed the used monitoring objective storehouse of dynamic portrait comparison system;
Portrait retrieval module (1073), submitter's picture retrieval comparison operation, the management of total system miscellaneous service operation and priority regulation and control, the inquiry afterwards of miscellaneous service charge book;
Log management module (1074), management and monitoring target alarm log, the daily record of visitor's portrait, equipment state daily record;
Authority management module (1075) is managed the login user and the user right of each subsystem;
Data management module (1076), various system configuration parameters, the backup of system operational parameters and reduction; Configuration Manager (1077), the dictionary table that the management native system uses;
Integrated data base (1078), be responsible for storage total management system specific information and with the mutual information of other system.
Embodiment two
With reference to accompanying drawing 1, dynamically portrait is monitored recognition system, and it is formed with embodiment one.
Shown in the accompanying drawing 5, dynamic Identification of Images control work flows journey synoptic diagram, its course of work is summarised as: in the large-scale activity garden, rig camera (101) carries out the collection of facial image to the visitor who enters; And catch device (102) by intelligent portrait side the portrait of gathering is carried out facial image processing and Feature Extraction; Simultaneously the image frame of gathering is carried out record, be recorded in DVR (103); The portrait of gathering is compared with portrait storage and the middle portrait of retrieval unit (104),, report to the police, be convenient to the Security Personnel and dispose if compare successfully.Further, the on-the-spot artificial comparison of Security Personnel confirms that the restriction monitoring objective is further movable, and warning message is reported to operation command centre, is preserved with the portrait data of gathering, and gives over to the use of inquiring about afterwards and collect evidence.
Embodiment three
Big assembly place accredited personnel's portrait comparison system.System forms as shown in Figure 1, comprises that rig camera (101), embedded intelligence portrait are surveyed to catch device (102), DVR (103), dynamically portrait comparing unit (104), portrait storage and retrieval unit (105), data synchronisation unit (106), several parts in integrated management unit (107).
Shown in the accompanying drawing 6, accredited personnel's portrait comparison workflow synoptic diagram.Its course of work is summarised as, for the accredited visitor who enters, system scans its certificate, and the certificate photograph data when extracting certificate and handling, the facial image of target is visited in the rig camera collection, and do stored record, compare with the extraction certificate photo, if any not meeting situation, the worker that makes a gift to someone comparison, artificial comparison is found still not meet, and this comparison result is carried out daily record upgrade, and the information that will not meet is reported and submitted processing enter as alarm, the further activity of restriction monitoring objective in the garden.The object information of this comparison is preserved, and gives over to the use of inquiring about afterwards and collect evidence.
Embodiment four
Shown in the accompanying drawing 7, the collection of large-scale activity portrait comprises operation command centre (11), command centre of Guoan (12), certificate management center (13), gateway duty room (14), visitor's safety check group (15), certificates checking group (16) with the operation institutional framework of comparison system.
Operation command centre (11) is the one-level management center of portrait collection and comparison system.Public security monitoring objective storehouses (public security, criminal key object storehouse) all during the large-scale activity are by the unified management issue of operation command centre (11), everyone gathers to operation command centre (11) as the data in real time of collection point, so that can carry out query and search to the target that enters in the place at any time when needing.
Its status of command centre of Guoan (12) is equal to operation command centre (11).Key monitoring targets all during the large-scale activity are in the unified identification comparison of command centre of Guoan (12), and the recognition result of affirmation is sent to relevant gateway duty room (14).
Certificate management center (13) is a large-scale activity certificate payroll management department, is responsible for authorizing of certificate audit, personnel's certificate, and the target photo of accredited personnel's authentication in this project obtains thus.
Gateway duty room (14), in the large-scale activity planning and design dozens of gateway.Gateway duty room (14) is the secondary administrative center of collection of large-scale activity portrait and comparison system, in order to guarantee that the large-scale activity portrait is gathered and the instantaneity and the reliability of comparison system, dynamically portrait monitoring comparison will mainly be carried out in the gateway, and warning message is sent to and runs command centre (11) automatically after gateway duty room (14) staff confirms.The key monitoring identification of targets is carried out in command centre of Guoan (12), and warning message is issued to the gateway after the staff of command centre of Guoan confirms.
Visitor's safety check group (15) is the third level of collection of large-scale activity portrait and comparison system, also is most basic working cell.When the visitor enters visitor's security check passage, be installed in embedded human in the Mag ﹠ Bag Area and gather human face photo automatically as collector and be sent to gateway duty room (14) monitoring comparative device and compare.As comparing success, the staff of gateway duty room informs the Security Personnel of security check passage with alarming result by measures such as wireless talkback, portrait collection and comparison and time of fire alarming 1-3 second in this process, disposes to security and to have kept the long period.
Certificate inspection group (16) is similar with visitor's safety check group (15), also is the third level of collection of large-scale activity portrait and comparison system, also is most basic working cell.When the accredited personnel entered the certificates checking passage, the accredited personnel's portrait comparison front end that is installed in certificates checking gate top carried out the portrait checking, hands over certificates checking system display result; The staff of examination group should note relevant prompting, and whether decision manually examines identity.Portrait collection and proving time are estimated 1-3 second in this process.
Simultaneously, collection of large-scale activity garden portrait and comparison system also are provided with following a few class personnel:
A), the Security Personnel of operation centre
Be responsible for the unified management of collection of large-scale activity portrait and comparison system;
Being responsible for the large-scale activity portrait gathers and the foundation of comparing system monitoring target list, distribution management etc.;
Responsible large-scale activity portrait collection is checked, is reported to the police with the warning message of comparison system and handles supervision, adds up and analyzes;
Be responsible in storage and inquiry system, retrieving interesting target;
B), gateway duty room Security Personnel
Be responsible for being deployed in early warning supervision, the processing of local dynamic portrait monitoring comparison subsystem;
Warning confirms that result notification visitor security check passage Security Personnel gathers Disposal Measures according to portrait;
C), the Security Personnel of certificates checking group
Be responsible for accredited personnel's portrait comparison subsystem checking result treatment;
D), visitor's security check passage Security Personnel
According to the portrait warning message that the gateway duty room is passed on suspicious object is taked Disposal Measures;
E), the personnel of Guoan
Be responsible for the maintenance in highest priority list portrait comparison storehouse;
Be responsible for being deployed in the affirmation of dynamic portrait monitoring comparison subsystem warning message and interesting target inquiry of command centre of Guoan;
F), volunteer
Being responsible for the security check passage stream of people dredges and order keeping.
Claims (7)
1. the people's face that is used for the big assembly place is monitored recognition system, described system comprises that rig camera, embedded intelligence portrait are surveyed and catches device, DVR, it is characterized in that: described rig camera carries out the collection of facial image, catch device by described intelligent portrait side the portrait of gathering is carried out facial image processing and Feature Extraction, simultaneously the image frame of gathering is recorded in described DVR.
2. a kind of people's face monitoring recognition system that is used for the big assembly place according to claim 1, it is characterized in that: described rig camera adopts the CCD camera of D1 resolution.
3. a kind of people's face monitoring recognition system that is used for the big assembly place according to claim 1, it is characterized in that: described embedded intelligence portrait survey is caught device and is comprised analog video input interface, network interface, analog video output interface.
4. a kind of people's face monitoring recognition system that is used for the big assembly place according to claim 3, it is characterized in that: described analog video input interface is used for receiving video signals.
5. a kind of people's face monitoring recognition system that is used for the big assembly place according to claim 3, its
Be characterised in that: described network interface is used to carry out parameter configuration and the output of people's image signal.
6. a kind of people's face monitoring recognition system that is used for the big assembly place according to claim 3, it is characterized in that: described analog video output interface is used to send the vision signal of stack portrait.
7. according to each described a kind of people's face monitoring recognition system that is used for the big assembly place of claim 1 to 6, it is characterized in that: described DVR is stored 16 road video records.
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| CN2010202818657U CN201917921U (en) | 2010-08-05 | 2010-08-05 | Face monitoring and recognizing system for large assembly places |
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| CN102929879A (en) * | 2011-08-10 | 2013-02-13 | 陕西省公安厅 | Single mode acquisition and analysis type database comparison system-based research |
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| CN102929879A (en) * | 2011-08-10 | 2013-02-13 | 陕西省公安厅 | Single mode acquisition and analysis type database comparison system-based research |
| CN102665054A (en) * | 2012-05-10 | 2012-09-12 | 江苏友上科技实业有限公司 | Network video recorder system for fast face retrieval |
| CN103310511A (en) * | 2013-05-30 | 2013-09-18 | 公安部第一研究所 | Passenger identity verifying security-checking system and operation method thereof |
| CN103310511B (en) * | 2013-05-30 | 2016-08-10 | 公安部第一研究所 | A kind of passenger's identification check safe examination system and operational approach thereof |
| CN106454248A (en) * | 2016-10-25 | 2017-02-22 | 上海银晨智能识别科技有限公司 | Processing system and processing method of face monitoring data in wide range |
| CN106530567A (en) * | 2016-10-25 | 2017-03-22 | 上海银晨智能识别科技有限公司 | Alarm comparison module, system and method suitable for large-scale monitoring |
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