CN108881840A - Building conversational system and method with face identification functions - Google Patents
Building conversational system and method with face identification functions Download PDFInfo
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- CN108881840A CN108881840A CN201810716767.2A CN201810716767A CN108881840A CN 108881840 A CN108881840 A CN 108881840A CN 201810716767 A CN201810716767 A CN 201810716767A CN 108881840 A CN108881840 A CN 108881840A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
- H04N7/186—Video door telephones
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/16—Human faces, e.g. facial parts, sketches or expressions
- G06V40/161—Detection; Localisation; Normalisation
- G06V40/166—Detection; Localisation; Normalisation using acquisition arrangements
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/16—Human faces, e.g. facial parts, sketches or expressions
- G06V40/172—Classification, e.g. identification
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/30—Individual registration on entry or exit not involving the use of a pass
- G07C9/32—Individual registration on entry or exit not involving the use of a pass in combination with an identity check
- G07C9/37—Individual registration on entry or exit not involving the use of a pass in combination with an identity check using biometric data, e.g. fingerprints, iris scans or voice recognition
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/30—Individual registration on entry or exit not involving the use of a pass
- G07C9/38—Individual registration on entry or exit not involving the use of a pass with central registration
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Multimedia (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Theoretical Computer Science (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Telephonic Communication Services (AREA)
Abstract
The present invention relates to a kind of building conversational system with face identification functions, including interphone extension and talk-back host, the talk-back host establishes communication link for obtaining interphone extension number, using the interphone extension number and the interphone extension；The talk-back host is also used to acquire video information, and the video information is sent to the interphone extension；The interphone extension is for receiving the video information, and recognition of face is carried out to the video information, obtain human face data, and the human face data is compared with human face data is prestored, recognition of face, which is generated, when judgement matching determines signal, and the recognition of face is determined that signal is sent to the talk-back host, the talk-back host receives after the recognition of face determines signal and generates access control signal.Correspondence relates to method simultaneously.System and method of the invention will not influence the rest and normal life of owner；The idle computing capability of extension set is utilized in high degree, while reducing host cost, lifting system real-time and stability.
Description
Technical field
The present invention relates to building conversational system, in particular to a kind of building conversational system and side with face identification functions
Method.
Background technique
In building conversational system, recognition of face is mainly used as identification and the access control of user.Traditional building
Intercom system, the application of recognition of face mainly include following three key point：
1. face sample collection；2. face alignment confirms；3. access control
Wherein, face sample collection, which refers to, is entered into the face picture of owner in central management system, as comparison
Sample.Acquisition method is taken pictures typing generally by centre management software or subscriber station in host front end.
Face alignment confirmation refers to the people in face and sample database in the real-time video for building talkback acquisition
Face compares, and reaches scheduled threshold value, then feeds back to access control module.
Access control refers to receive the legal feedback signal of subscriber authentication after, trigger access control system, complete open the door finger
It enables.
In existing building conversational system, there are following deficiencies：
1. sample collection (also known as face authorization) mode of face is relatively simple, need owner and property management personnel double
Fang Peihe, assistance are not very flexibly；
2., no matter being placed on server or host side, being wanted to the process performance of master control for recognition of face processing
Ask high, higher cost, and system interaction is comparatively laborious.
, can be time-consuming if, in face retrieval, matched 3. cell users are big, cause access control response real-time compared with
Difference.
Summary of the invention
In view of this, the present invention provides a kind of building conversational system and method with face identification functions, for not shadow
Intercommunication basic function is rung, in the case where not increasing cost, for recognition of face and access control, empowerment management operation letter
It is single, respond the advantages that real-time is high.
In order to achieve the above object, the technical proposal of the invention is realized in this way：
A kind of building conversational system with face identification functions, including interphone extension and talk-back host, the talk-back host
For obtaining interphone extension number, communication link is established using the interphone extension number and the interphone extension；The talk-back host
It is also used to acquire video information, and the video information is sent to the interphone extension；The interphone extension is for receiving institute
Video information is stated, and recognition of face is carried out to the video information, obtains human face data, and by the human face data and prestore people
Face data are compared, and judge that recognition of face is generated when matching determines signal, and the recognition of face is determined that signal is sent to
The talk-back host, the talk-back host receive after the recognition of face determines signal and generate access control signal.
Further, the talk-back host includes video acquisition unit, host intercommunication processing unit, key and access control
Unit；The interphone extension includes extension set intercommunication processing unit, face identification unit and face sample unit；
The interphone extension number is sent to the host intercommunication and handles list by the key for obtaining interphone extension number
Member；
The host intercommunication processing unit is used to be established according to the interphone extension number and the extension set intercommunication processing unit
Communication link；
The video information is sent at the host intercommunication by the video acquisition unit for acquiring video information
Unit is managed, the video information is sent to the extension set intercommunication processing unit by the host intercommunication processing unit；
The video information is sent to the people for obtaining the video information by the extension set intercommunication processing unit
Face recognition unit；
The face identification unit is used to carry out recognition of face to the video information to obtain human face data, and from the people
It is obtained in face sample unit and prestores human face data, the human face data is compared with the human face data that prestores, judgement
Timing generates recognition of face and determines signal, and the recognition of face is determined that signal is sent to the extension set intercommunication processing unit,
The recognition of face is determined that signal is sent to the host intercommunication processing unit by the extension set intercommunication processing unit；
The host intercommunication processing unit controls the access control for receiving after the recognition of face determines signal
Unit generates access control signal.
Further, the video acquisition unit includes camera, video acquisition module and video encoding module；It is described to take the photograph
As head is for acquiring video data；The video acquisition module is used to the video data being converted to yuv video formatted data；
The video encoding module is used to the yuv video formatted data carrying out video compression coding.
Further, the interphone extension further includes display processing unit, and extension set intercommunication processing unit is also used to will be described
Video information is sent to the display processing unit, and the display processing unit is shown according to the video information.
Further, the host intercommunication unit and the extension set intercommunication unit are also used to send or receive audio-frequency information.
A kind of building talkback method with face identification functions, including interphone extension and talk-back host, the intercommunication method
Include the following steps：
The talk-back host obtains interphone extension number, establishes communication chain using the interphone extension number and the interphone extension
Road；
The talk-back host acquires video information, and the video information is sent to the interphone extension；
The interphone extension receives the video information, and carries out recognition of face to the video information, obtains face number
According to, and the human face data is compared with human face data is prestored, judge that recognition of face is generated when matching determines signal, and will
The recognition of face determines that signal is sent to the talk-back host；
The talk-back host receives after the recognition of face determines signal and generates access control signal.
Further, the talk-back host includes video acquisition unit, host intercommunication processing unit, key and access control
Unit；The interphone extension includes extension set intercommunication processing unit, face identification unit and face sample unit；
The key obtains interphone extension number, and the interphone extension number is sent to the host intercommunication processing unit；
The host intercommunication processing unit is communicated according to the interphone extension number with extension set intercommunication processing unit foundation
Link；
The video acquisition unit acquires video information, and the video information is sent to the host intercommunication and handles list
The video information is sent to the extension set intercommunication processing unit by member, the host intercommunication processing unit；
The extension set intercommunication processing unit obtains the video information, and the video information is sent to the face and is known
Other unit；
The face identification unit carries out recognition of face to the video information and obtains human face data, and from the face sample
It is obtained in this unit and prestores human face data, the human face data is compared with the human face data that prestores, when judging matching,
It generates recognition of face and determines signal, and the recognition of face is determined that signal is sent to the extension set intercommunication processing unit, it is described
The recognition of face is determined that signal is sent to the host intercommunication processing unit by extension set intercommunication processing unit；
The host intercommunication processing unit receives after the recognition of face determines signal and controls the access control unit
Generate access control signal.
Further, the video acquisition unit includes camera, video acquisition module and video encoding module；The institute
Stating the step of video acquisition unit acquires video information includes：
The camera acquires video data；
The video data is converted to yuv video formatted data by the video acquisition module；
The yuv video formatted data is carried out video compression coding by the video encoding module.
Further, the interphone extension further includes display processing unit, and the extension set intercommunication processing unit will also be described
Video information is sent to the display processing unit, and the display processing unit is shown according to the video information.
Further, audio-frequency information is also sent or received between the host intercommunication unit and the extension set intercommunication unit.
The human face data of each indoor unit storage owner's family；Facial recognition capability is distributed on every extension set；
Identification operation background process in extension set, is unaware for owner, will not influence the rest and normal life of owner；
The idle computing capability of extension set is utilized in high degree, while reducing host cost, lifting system real-time and stability.
Detailed description of the invention
The features and advantages of the present invention will be more clearly understood by referring to the accompanying drawings, and attached drawing is schematically without that should manage
Solution is carries out any restrictions to the present invention, in the accompanying drawings：
Fig. 1 is the system structure signal of the building conversational system with face identification functions in some embodiments of the invention
Figure；
Fig. 2 is the system structure signal of the building conversational system with face identification functions in some embodiments of the invention
Figure；
Fig. 3 is the flow diagram of the building talkback method with face identification functions in some embodiments of the invention；
Fig. 4 is the flow diagram of the building talkback method with face identification functions in some embodiments of the invention；
Fig. 5 is the main machine structure signal in the building conversational system with face identification functions in some embodiments of the invention
Figure；
Fig. 6 is the extension set structural representation of the building conversational system with face identification functions in some embodiments of the invention
Figure；
Fig. 7 is that the host of the building conversational system with face identification functions in some embodiments of the invention is communicated with extension set
Protocol format schematic diagram；
Fig. 8 is that the host of the building conversational system with face identification functions in some embodiments of the invention is communicated with extension set
Flow diagram.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real
Applying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application
Feature in example and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also
To be implemented using other than the one described here other modes, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
As shown in Figure 1, the embodiment of the invention provides the building conversational system 100 with face identification functions, including intercommunication
Extension set 110 and talk-back host 120, the talk-back host 120 utilize the interphone extension number and institute for obtaining interphone extension number
It states interphone extension 110 and establishes communication link；The talk-back host 120 is also used to acquire video information, and by the video information
It is sent to the interphone extension 110；The interphone extension 110 for receiving the video information, and to the video information into
Row recognition of face obtains human face data, and the human face data is compared with human face data is prestored, and judges generation when matching
Recognition of face determines signal, and the recognition of face is determined that signal is sent to the talk-back host 120, the talk-back host
120, which receive the recognition of face, determines generation access control signal after signal.
Video processing is distributed on each extension set by the present invention, reduces the operation requirement of host, idle meter is utilized
Calculate device.
Human face data is prestored in the present invention can typing in the following way：
1. doing typing by the extension set of owner's family, owner can voluntarily manage the legitimacy of face sample, after typing, system
Human face data to property center can be uploaded automatically to backup.
2. property center can also acquire, and face sample can be distributed to often by centring system according to mark by mobile phone
The extension set of a owner's family
3. if can also be backuped identification by the database at center owner's family extension set fails.
Extension forms a variety of typing modes.
As shown in Fig. 2, in building conversational system 100 of the embodiment of the present invention with face identification functions, the talk-back host
120 include video acquisition unit 121, host intercommunication processing unit 122, key 123 and access control unit 124；The intercommunication
Extension set 110 includes extension set intercommunication processing unit 111, face identification unit 112 and face sample unit 113；
The interphone extension number is sent at the host intercommunication by the key 123 for obtaining interphone extension number
Manage unit 122；
The host intercommunication processing unit 122 is used for according to the interphone extension number and the extension set intercommunication processing unit
111 establish communication link；
The video information is sent to the host pair for acquiring video information by the video acquisition unit 121
Say that the video information is sent to the extension set intercommunication processing unit by processing unit 122, the host intercommunication processing unit 122
111；
The video information is sent to institute for obtaining the video information by the extension set intercommunication processing unit 111
State face identification unit 112；
The face identification unit 112 is used to carry out recognition of face to the video information to obtain human face data, and from institute
It states to obtain in face sample unit 113 and prestores human face data, the human face data is compared with the human face data that prestores,
When judgement matching, generates recognition of face and determine signal, and the recognition of face is determined that signal is sent at the extension set intercommunication
Unit 111 is managed, the recognition of face is determined that signal is sent to the host intercommunication and handles by the extension set intercommunication processing unit 111
Unit 122；
The host intercommunication processing unit 122 controls gate inhibition's control for receiving after the recognition of face determines signal
Unit 124 processed generates access control signal.
The video acquisition unit 121 includes camera 1211, video acquisition module 1212 and video encoding module 1213；
The camera 1211 is for acquiring video data；The video acquisition module 1212 is for being converted to the video data
Yuv video formatted data；The video encoding module 1213 is used to the yuv video formatted data carrying out video compress volume
Code.
In order to facilitate video intercommunication function, normal visible intercommunication is realized, the interphone extension 110 further includes that display processing is single
Member 114, extension set intercommunication processing unit 111 is also used to for the video information being sent to the display processing unit 114, described aobvious
Show that processing unit 114 is shown according to the video information.The display processing unit 114 can be display screen, as LCD is shown
Screen.
The host intercommunication unit 122 and the extension set intercommunication unit 111 are also used to send or receive audio-frequency information, carry out
Speech talkback.
On the other hand, as shown in figure 3, the embodiment of the invention provides a kind of building talkback sides with face identification functions
Method, including interphone extension and talk-back host, the intercommunication method include the following steps：
S110, the talk-back host obtain interphone extension number, are established using the interphone extension number and the interphone extension
Communication link；
S120, the talk-back host acquire video information, and the video information are sent to the interphone extension；
S130, the interphone extension receive the video information, and carry out recognition of face to the video information, obtain people
Face data, and the human face data is compared with human face data is prestored, judge that recognition of face is generated when matching determines signal,
And the recognition of face is determined that signal is sent to the talk-back host；
S140, the talk-back host receive after the recognition of face determines signal and generate access control signal.
As shown in figure 4, the embodiment of the invention provides a kind of building talkback method with face identification functions, the intercommunication
Host includes video acquisition unit, host intercommunication processing unit, key and access control unit；The interphone extension includes extension set
Intercommunication processing unit, face identification unit and face sample unit；The intercommunication method includes the following steps
S210, the key obtain interphone extension number, and the interphone extension number is sent to the host intercommunication and is handled
Unit；
S220, the host intercommunication processing unit are established according to the interphone extension number and the extension set intercommunication processing unit
Communication link；
S230, the video acquisition unit acquire video information, and the video information are sent to the host intercommunication
The video information is sent to the extension set intercommunication processing unit by processing unit, the host intercommunication processing unit；
S240, the extension set intercommunication processing unit obtain the video information, and the video information are sent to described
Face identification unit；
S250, the face identification unit carry out recognition of face to the video information and obtain human face data, and from described
It is obtained in face sample unit and prestores human face data, the human face data is compared with the human face data that prestores, judged
When matching, generates recognition of face and determine signal, and the recognition of face is determined that signal is sent to the extension set intercommunication and handles list
The recognition of face is determined that signal is sent to the host intercommunication processing unit by member, the extension set intercommunication processing unit；
S260, the host intercommunication processing unit receive after the recognition of face determines signal and control the access control
Unit generates access control signal.
For the ease of data transmission, the video acquisition unit includes camera, video acquisition module and Video coding mould
Block；The step of video acquisition unit acquisition video information includes：
The camera acquires video data；
The video data is converted to yuv video formatted data by the video acquisition module；
The yuv video formatted data is carried out video compression coding by the video encoding module.
The interphone extension further includes display processing unit, and the extension set intercommunication processing unit also sends out the video information
The display processing unit is given, the display processing unit is shown according to the video information, and user is facilitated to regard
Frequency intercommunication.
Audio-frequency information is also sent or received between the host intercommunication unit and the extension set intercommunication unit, realizes voice pair
It says.
System in the embodiment of the present invention includes host and extension set, as shown in figure 5, host composition and function are defined as follows：
1, camera：Acquire video data
2, video acquisition module：Yuv video formatted data is converted by the data of camera
3, Video coding：Yuv data is done into video compression coding
4. intercommunication processing unit：
1. Signalling exchange is carried out with extension set,
2. completing audio to transmission of video of making peace
3. transmitting video data is given to extension set and do recognition processing
5. key：Dialing completes related primary operational according to different combined commands:
1. being used for the interactive operation of building conversational system, such as initiate to request with owner, property center；
2. the extension set for pressing specific combination key triggering owner's family does corresponding recognition of face.
6. access control：
1. basic door access control function
2. receive owner's family extension set identify successfully after feedback signal, completion door open command operate.
As shown in fig. 6, extension set is formed and is defined as follows：
1. display processing unit：When intercommunication, it is transmitted through the video data come as echo host, realizes video intercom function；
2. intercommunication processing unit：
1. the Signalling exchange with host
2. audio-video intercommunication data processing and interaction；
3. face identification unit：
1. the signaling of receiving host triggers the cell operation
2. receiving host is transmitted through the video data come, recognition of face is done
4. face sample management：
The sample database of owner kinsfolk is locally stored in extension set.
Triggering indoor unit does the protocol format of recognition of face as shown in fig. 7, comprises action identification part, room number mark
Know part and instruction end of identification part.
Such as：User inputs * * 0205#
After host receives, the data that camera acquires can be transferred to the extension set of 0205 owner's family, extension set receives
After the operation, triggering face identification unit does recognition of face and authentication.This process executes on extension set backstage, does not have aobvious
Show the triggering with sound, avoids bothering user.
Communication process in the embodiment of the present invention between host and extension set is as shown in figure 8, user is unique by key-press input
The number such as * * 0205# of mark and owner's indoor unit (input of this number is the number inputted when being different from intercommunication)；Host
After receiving push button signalling, whether identification present instruction is the face identification functions for initiating intercom system；By video data transmission
To extension set；Extension set receives video data and does recognition of face；After identifying successfully, host signal is fed back, completes door open command；Gate inhibition
Control unit receives the signal of extension set feedback, completes door open command；
The operating process of system of the invention is as follows：
1. the human face data of owner kinsfolk is stored in cell in each owner's indoor unit, as sample；
2. owner inputs specific format character instruction by unit doorway host, such as * * 0205#；
3. after host recognizes the instruction, being connect with the indoor unit of owner's family；
4. after successful connection, video acquisition data that extension set receiving host passes over；
5. after host receives video data, triggering extension set does recognition of face, compare with the sample data in extension set；
6. feeding back host signal after authentication success, door open command is completed.
The human face data of each indoor unit storage owner's family；Facial recognition capability is distributed on every extension set；
Identification operation background process in extension set, is unaware for owner, will not influence the rest and normal life of owner；
The idle computing capability of extension set is utilized in high degree, while reducing host cost, lifting system real-time and stability.
In the present invention, term " first ", " second ", " third " are used for description purposes only, and should not be understood as instruction or
Imply relative importance.Term " multiple " refers to two or more, unless otherwise restricted clearly.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of building conversational system with face identification functions, including interphone extension and talk-back host, which is characterized in that described
Talk-back host establishes communication link for obtaining interphone extension number, using the interphone extension number and the interphone extension；It is described
Talk-back host is also used to acquire video information, and the video information is sent to the interphone extension；The interphone extension is used
In receiving the video information, and recognition of face is carried out to the video information, obtain human face data, and by the human face data
It is compared with human face data is prestored, judges that generating recognition of face when matching determines signal, and the recognition of face is determined and is believed
It number is sent to the talk-back host, the talk-back host receives after the recognition of face determines signal and generates access control letter
Number.
2. the building conversational system according to claim 1 with face identification functions, which is characterized in that the talk-back host
Including video acquisition unit, host intercommunication processing unit, key and access control unit；The interphone extension includes extension set intercommunication
Processing unit, face identification unit and face sample unit；
The interphone extension number is sent to the host intercommunication processing unit for obtaining interphone extension number by the key；
The host intercommunication processing unit is used to be communicated according to the interphone extension number with extension set intercommunication processing unit foundation
Link；
The video information is sent to the host intercommunication and handles list by the video acquisition unit for acquiring video information
The video information is sent to the extension set intercommunication processing unit by member, the host intercommunication processing unit；
The video information is sent to the face and known by the extension set intercommunication processing unit for obtaining the video information
Other unit；
The face identification unit is used to carry out recognition of face to the video information to obtain human face data, and from the face sample
It is obtained in this unit and prestores human face data, the human face data is compared with the human face data that prestores, when judging matching,
It generates recognition of face and determines signal, and the recognition of face is determined that signal is sent to the extension set intercommunication processing unit, it is described
The recognition of face is determined that signal is sent to the host intercommunication processing unit by extension set intercommunication processing unit；
The host intercommunication processing unit controls the access control unit for receiving after the recognition of face determines signal
Generate access control signal.
3. the building conversational system according to claim 2 with face identification functions, which is characterized in that the video acquisition
Unit includes camera, video acquisition module and video encoding module；The camera is for acquiring video data；The video
Acquisition module is used to the video data being converted to yuv video formatted data；The video encoding module is used for the YUV
Video formatted data carries out video compression coding.
4. the building conversational system according to claim 2 with face identification functions, which is characterized in that the interphone extension
It further include display processing unit, it is single that extension set intercommunication processing unit is also used to for the video information being sent to the display processing
Member, the display processing unit are shown according to the video information.
5. the building conversational system according to claim 2 with face identification functions, which is characterized in that the host intercommunication
Unit and the extension set intercommunication unit are also used to send or receive audio-frequency information.
6. a kind of building talkback method with face identification functions, including interphone extension and talk-back host, which is characterized in that described
Intercommunication method includes the following steps：
The talk-back host obtains interphone extension number, establishes communication link using the interphone extension number and the interphone extension；
The talk-back host acquires video information, and the video information is sent to the interphone extension；
The interphone extension receives the video information, and carries out recognition of face to the video information, obtains human face data, and
The human face data is compared with human face data is prestored, judges that generating recognition of face when matching determines signal, and will be described
Recognition of face determines that signal is sent to the talk-back host；
The talk-back host receives after the recognition of face determines signal and generates access control signal.
7. the building talkback method according to claim 6 with face identification functions, which is characterized in that the talk-back host
Including video acquisition unit, host intercommunication processing unit, key and access control unit；The interphone extension includes extension set intercommunication
Processing unit, face identification unit and face sample unit；
The key obtains interphone extension number, and the interphone extension number is sent to the host intercommunication processing unit；
The host intercommunication processing unit establishes communication link according to the interphone extension number and the extension set intercommunication processing unit；
The video acquisition unit acquires video information, and the video information is sent to the host intercommunication processing unit,
The video information is sent to the extension set intercommunication processing unit by the host intercommunication processing unit；
The extension set intercommunication processing unit obtains the video information, and the video information is sent to the recognition of face list
Member；
The face identification unit carries out recognition of face to the video information and obtains human face data, and from the face sample list
It is obtained in member and prestores human face data, the human face data is compared with the human face data that prestores, when judging matching, generated
Recognition of face determines signal, and the recognition of face is determined that signal is sent to the extension set intercommunication processing unit, the extension set
The recognition of face is determined that signal is sent to the host intercommunication processing unit by intercommunication processing unit；
The host intercommunication processing unit receives after the recognition of face determines signal and controls the access control unit generation
Access control signal.
8. the building talkback method according to claim 7 with face identification functions, which is characterized in that the video acquisition
Unit includes camera, video acquisition module and video encoding module；The video acquisition unit acquisition video information
Step includes：
The camera acquires video data；
The video data is converted to yuv video formatted data by the video acquisition module；
The yuv video formatted data is carried out video compression coding by the video encoding module.
9. the building talkback method according to claim 7 with face identification functions, which is characterized in that the interphone extension
It further include display processing unit, the video information is also sent to the display and handles list by the extension set intercommunication processing unit
Member, the display processing unit are shown according to the video information.
10. the building talkback method according to claim 7 with face identification functions, which is characterized in that the host pair
It says and also sends or receives audio-frequency information between unit and the extension set intercommunication unit.
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