CN106791485A - The changing method and device of video - Google Patents
The changing method and device of video Download PDFInfo
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- CN106791485A CN106791485A CN201611036852.1A CN201611036852A CN106791485A CN 106791485 A CN106791485 A CN 106791485A CN 201611036852 A CN201611036852 A CN 201611036852A CN 106791485 A CN106791485 A CN 106791485A
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 241001633942 Dais Species 0.000 claims description 12
- 238000012913 prioritisation Methods 0.000 abstract description 3
- 230000006870 function Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 230000003993 interaction Effects 0.000 description 4
- 230000002452 interceptive effect Effects 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- VAYOSLLFUXYJDT-RDTXWAMCSA-N Lysergic acid diethylamide Chemical compound C1=CC(C=2[C@H](N(C)C[C@@H](C=2)C(=O)N(CC)CC)C2)=C3C2=CNC3=C1 VAYOSLLFUXYJDT-RDTXWAMCSA-N 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/268—Signal distribution or switching
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
- H04N5/45—Picture in picture, e.g. displaying simultaneously another television channel in a region of the screen
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- Engineering & Computer Science (AREA)
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- Signal Processing (AREA)
- Closed-Circuit Television Systems (AREA)
Abstract
The invention provides the changing method and device of a kind of video, the method includes：The video image in the multiple regions of collection；Recognition of face is carried out with the current state of detection zone to each video image respectively；Determined to play the priority of video image according to region and current state；The video image of highest priority is switched into display picture.Different conditions of the present invention in each video image carry out prioritization, and the switching of display picture is carried out according to priority.Realize the function to multi-channel video Autoconducting.
Description
Technical field
The present invention relates to field, the changing method and device of more particularly to a kind of video.
Background technology
In prior art, in some shooting occasions, in order to be regarded, it is necessary to carry out multichannel the features such as reaching multi-angle and other many scapes
Frequency shoots, i.e., multiple cameras shoot video simultaneously.The instructor in broadcasting for being responsible for video switching selects all the way, to play from multi-channel video
On main screen.
Multi-channel video instructor in broadcasting generally requires special instructor in broadcasting personnel and is operated.This aspect occupies manpower, another
Aspect also limit the use of multichannel shooting, if staff is less or does not understand the professional of instructor in broadcasting, cannot
Carry out multichannel shooting.
For the more complicated problem of the operation of video guide in the prior art, current industry does not have preferable settling mode.
The content of the invention
Present invention aim at the offer a kind of changing method and device of video, it is intended to solve video guide in the prior art
The more complicated problem of operation.
The invention provides a kind of changing method of video, the method includes：
The video image in the multiple regions of collection；Recognition of face is carried out to each video image respectively with the current shape of detection zone
State；Determined to play the priority of video image according to region and current state；The video image of highest priority is switched to aobvious
Show picture.
Present invention also offers a kind of switching device of video, the device includes：
Acquisition module, the video image for gathering multiple regions；Detection module, for being carried out to each video image respectively
Recognition of face is detecting the current state in the region；First determining module, for determining to play according to region and current state
The priority of video image；First handover module, for the video image of the highest priority to be switched into display picture.
Different conditions of the present invention in each video image carry out prioritization, and carry out display picture according to priority
The switching in face.Realize the function to multi-channel video Autoconducting.
Brief description of the drawings
Fig. 1 is the flow chart of the changing method of video provided in an embodiment of the present invention；
Fig. 2 a are the full frame schematic diagrames that inventive embodiments are provided；
Fig. 2 b are the schematic diagrames of the picture-in-picture that inventive embodiments are provided；
Fig. 2 c are the schematic diagrames of two split screens that inventive embodiments are provided；
Fig. 2 d are the one of the inventive embodiments offer schematic diagrames for dragging three；
Fig. 3 is the configuration diagram of the Education Administration Information System that the preferred embodiment of the present invention is provided；
Fig. 4 is the structured flowchart of the switching device of video provided in an embodiment of the present invention.
Specific embodiment
In order that the technical problem to be solved in the present invention, technical scheme and beneficial effect become more apparent, below in conjunction with
Drawings and Examples, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
A kind of changing method of video is the embodiment of the invention provides, the executive agent of the method can be teaching management system
System.Fig. 1 is the flow chart of the changing method of video provided in an embodiment of the present invention, as shown in figure 1, the method specifically include it is following
Step S110 to step S140.
Step S110, the video image in the multiple regions of collection.
Mainly include three regions in classroom：Dais, blackboard and student area.There is corresponding video camera in each region, leads to
Multiple video cameras are crossed, teacher, student and writing on the blackboard content can be shot simultaneously.Further, in same region also
Multiple video cameras can be set, for example, is set in dais region and the face of teacher is carried out the video camera of feature shooting and shot always
The video camera that teacher moves in dais region；Equally, in student region, the video camera and use for shooting student's feature are also provided with
In the video camera for shooting student's movement；The video camera for shooting blackboard feature is only provided with for blackboard.By above-mentioned each video camera,
Dais panoramic picture, dais close-up image, student's panoramic picture, student's close-up image and blackboard close-up image can be gathered.
Step S120, carries out recognition of face with the current state of detection zone to each video image respectively.
By recognition of face may determine that the region whether someone, further may determine that the current state in the region,
Dais region can include teacher's close-up condition and teacher's mobile status, and blackboard region is general all in blackboard close-up condition, learns
Raw region can include student's close-up condition and student's mobile status.
Used as a kind of preferred implementation, in the present embodiment, tutoring system first stores face, head, eyes, the nose of people
With the feature at the position such as mouth, fuzzy analysis are carried out when shooting, when the information that current camera lens is collected is substantially consistent with face,
Someone in the region for shooting can be determined.
Further, when face is constantly in fixed position in camera lens, it may be determined that people is static；But face does not have
Fixed position in camera lens, it is determined that people is mobile.
Further, when recognizing face location and fixing, when to determine people be static, feature video camera can be adjusted
Focal length, carries out feature shooting；When face location change is recognized, determine that people is mobile, camera angle can be automatically adjusted,
So that face is in specific position in the center of video image or video image.
Step S130, determines to play the priority of video image according to region and current state.
By recognition of face it is known that whether having target, and target in classroom before student region, teacher region, blackboard
Whether in movement.The priority of the switching by pre-defining, it may be determined that preferentially show the shooting image of any platform video camera.
Priority can be set according to different demands.In present embodiments providing a kind of preferred implementation,
" switching law " is gradually reduced according to following current state priority：Teacher is static, teacher's movement, blackboard, student are static
With student's movement, according to the priority, the video camera of selection is successively teacher's feature video camera, teacher's panoramic camera, blackboard
Feature video camera, student's feature video camera and student's panoramic camera.Picture is switched into a certain video camera by the priority to clap
After the image taken the photograph, preset duration is persistently played, such as 30 seconds, current state is then judged again, and be according to priority judgement
Continue to play the image that the image is also to switch to other video cameras.
Multiple regions in the present embodiment can include the region in local region and teleclass, local and remote
In classroom, including one is presided over classroom and more than one classroom, when there is multiple classrooms to carry out interaction, in order to reach interaction
The effect of teaching, it is preferred that the priority for presiding over classroom and classroom can be set according to default rule.
During interactive teaching, presiding over classroom and classroom has different authorities, and classroom is automatically by it
Ground Switch Video report give preside over classroom, preside over classroom according to configuration preference level (teleclass is preferential, local classroom is preferential) from
The dynamic interactive the first display video image of switching reaches preferable remote interaction experience.
Step S140, display picture is switched to by the video image of highest priority.
Having on teaching equipment can play the playout software of video image, and the soft of shoot function is provided with each video camera
Part, when the playout software in shooting software and teaching equipment on video camera can be docked, the image that video camera shoots can
Played with teaching equipment.The playout software in shooting software and teaching equipment on video camera passes through the interface for pre-setting
Docked, teaching equipment gathers all camera video signals, recognition of face signal and writing on the blackboard switching signal etc. simultaneously, imparted knowledge to students
Display picture in equipment is only docked with the video image for a video camera every time, when need play other video cameras shoot
During image, teaching equipment can first disconnect the connection video image and current camera between, then switch to be taken the photograph with next
Camera sets up the video image of connection.The switching for disconnecting and setting up video image of this interface is connected both can be by soft
Part is realized to be realized by hardware.
Switching to display picture is called instructor in broadcasting, in a preferred embodiment, can realize video image by software
Instructor in broadcasting.When receiving the video image that all video cameras shoot at the same time, switching signal can be to each after switching law is filtered
Road video image is ranked up, and priority Image display position high is easier to find that viewing area is bigger.Generally preset several
Video image layout is planted, such as full frame, picture-in-picture, two split screens and one drag third, Fig. 2 a-2d are respectively that inventive embodiments are provided
Full frame, picture-in-picture, two split screens and one drag three schematic diagram, and as shown in Figure 2 a, full frame i.e. whole display picture only shows and regards all the way
Frequency image；As shown in Figure 2 b, picture-in-picture is in full frame basis, to be shown with a small region on some angle of screen
Another road video image；As shown in Figure 2 c, 2 panes are to screen into two regions that are equal in magnitude or being more or less the same, each area
Domain shows video image all the way respectively；As shown in Figure 2 d, one drag three be by screen be divided into a larger region and three compared with
Small region, each region shows video image all the way respectively.
The priority of writing on the blackboard is highest in usual switching law, next to that electronic whiteboard, next to that teacher, is finally to learn
It is raw.If such as current video sequence is teacher's feature, student's panorama, electronic whiteboard, writing on the blackboard, now teacher touches after touching blackboard
Hair writing on the blackboard switching signal enters system, Education Administration Information System immediately by teacher's close-up image and writing on the blackboard image to change place, so
Writing on the blackboard shows in first place.Again for example teacher's switching signal and study switching signal almost simultaneously reach when, due to teacher prior to
The time-out time that student sets according to switching law preferentially show teacher for a period of time until after time-out if student still stands
Then now switch student, until new switching signal arrives.It is low that priority image time-out time high is typically larger than rank
Image, makes a distinction between the important and the lesser one purpose so as to reach display, and important image shows that the preferential position in layout is also more long more long.
Preferably, after the video image of highest priority is switched into display picture, can first in preset duration
Interior holding video pictures are display picture, such as 30 seconds, true again according to region and current state then after preset duration
Surely the priority of video image is played, if current priority highest video image is not original video image, will be current
The video image of highest priority switches to display picture.
Different conditions of the embodiment of the present invention in each video image carry out prioritization, and are carried out according to priority
The switching of display picture.Realize the function to multi-channel video Autoconducting.
Fig. 3 is the configuration diagram of the Education Administration Information System that the preferred embodiment of the present invention is provided, as shown in figure 3, the system
Including：
It is student's feature video camera 301, blackboard feature video camera 302, electronic whiteboard 303, student's panoramic camera 304, old
Teacher's panoramic camera 305 and teacher's feature video camera 307 are connected with video collector 306 respectively, at the same each video camera also with mesh
Mark state acquisition device 308 is connected.Therefore system can obtain the video image in a region and know corresponding current state.
Dbjective state collector 308 is connected with target switch 309, and dbjective state collector 308 is responsible for monitoring and is received
All tracking equipment switching signals, target switch 309 is used to provide target switching law.Can be with by target switch 309
Determine the best video image of priority, the video image is by the first output of switching output 316 in teleclass
In long-range the first switching input 319.Video collector page 306 generates all video images by video editor 311, by this
The interactive output 310 in ground exports in long-distance video input 320 multiple paths of video images.
Video synthesizer 312 is connected with video collector 306 and video encoder 311, and video synthesizer 312 is according to cutting
Synthesize local and distal end the video for the treatment of after changing rule-based filtering, obtain finally be presented to the video data of user, obtain video
After data, rendered and played by video renderer 313.
There is similar system in long-range study course, the first switching output 321 in teleclass will be preferential in teleclass
Level highest video image sends the long-range the first switch input 315 into local classroom, the local video in teleclass
Video image output in teleclass is input into 313 by output 318 to long-distance video.
By the interaction of said system, the effect of interactive teaching can be reached.
The embodiment of the present invention additionally provides a kind of switching device of video, and Fig. 4 is video provided in an embodiment of the present invention
The structured flowchart of switching device, as shown in figure 4, the device includes acquisition module 410, detection module 420, the first determining module
430 and first handover module 440.
Acquisition module 410 is used to gather the video image in multiple regions.
Detection module 420 is used to carry out recognition of face with the current state of detection zone to each video image respectively.
First determining module 430 is used to be determined to play the priority of video image according to region and current state.
First handover module 440 is used to for the video image of highest priority to switch to display picture.
Preferably, shown acquisition module is additionally operable to：Using multiple cameras collection dais close-up image, dais panorama sketch
Picture, student's close-up image, student's panoramic picture and blackboard close-up image.
Preferably, the device also includes：Display module, is display picture for keeping video pictures in preset duration；
Second determining module, for after preset duration, determining to play the preferential of video image again according to region and current state
Level；Second handover module, in the case of not being original video image in current priority highest video image, then ought
The video image of preceding highest priority switches to display picture.
Preferably, detection module is additionally operable to:When face movement is recognized, camera angle is automatically adjusted, so that face
Specific position in center or video image in video image.
Preferably, multiple regions include the region in local region and teleclass, in local and remote classroom, bag
Include one and preside over classroom and more than one classroom；First determining module is additionally operable to：Set according to default rule and preside over religion
Room and the priority of classroom.
It is apparent to those skilled in the art that, for convenience of description and succinctly, only with above-mentioned each work(
The division of energy unit is carried out for example, in practical application, as needed can distribute by different functions above-mentioned functions
Unit is completed, will the internal structure of device be divided into different functional unit or modules, with complete it is described above whole or
Person's partial function.Each functional unit in embodiment can be integrated in a processing unit, or unit is independent
It is physically present, it is also possible to which two or more units are integrated in a unit, above-mentioned integrated unit both can be using hard
The form of part is realized, it would however also be possible to employ the form of SFU software functional unit is realized.In addition, the specific name of each functional unit is also
For the ease of mutually differentiation, the protection domain of the application is not limited to.The specific work process of unit in said apparatus, can
With reference to the corresponding process in aforementioned means embodiment, will not be repeated here.
Those of ordinary skill in the art are it is to be appreciated that the list of each example described with reference to the embodiments described herein
Unit and algorithm steps, can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
Performed with hardware or software mode, depending on the application-specific and design constraint of technical scheme.Professional and technical personnel
Described function, but this realization can be realized it is not considered that exceeding using different device to each specific application
The scope of the present invention.
In embodiment provided by the present invention, it should be understood that disclosed device and device, can be by other
Mode is realized.For example, device embodiment described above is only schematical, for example, the division of module or unit, only
It is a kind of division of logic function, there can be other dividing mode when actually realizing, such as multiple units or component can be combined
Or another system is desirably integrated into, or some features can be ignored, or do not perform.Another, shown or discussed phase
Coupling or direct-coupling or communication connection between mutually can be by some interfaces, the INDIRECT COUPLING or communication of device or unit
Connection, can be electrical, mechanical or other forms.
The unit illustrated as separating component can be or may not be physically separate, be shown as unit
Part can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple networks
On unit.Some or all of unit therein can be according to the actual needs selected to realize the purpose of this embodiment scheme.
In addition, during each functional unit in each embodiment of the invention can be integrated in a processing unit, it is also possible to
It is that unit is individually physically present, it is also possible to which two or more units are integrated in a unit.Above-mentioned integrated list
Unit can both be realized in the form of hardware, it would however also be possible to employ the form of SFU software functional unit is realized.
If integrated unit, can to realize in the form of SFU software functional unit and as independent production marketing or when using
To store in a computer read/write memory medium.Based on such understanding, the technical scheme essence of the embodiment of the present invention
On all or part of the part that is contributed to prior art in other words or the technical scheme can be with the shape of software product
Formula is embodied, and the computer software product is stored in a storage medium, including some instructions are used to so that a calculating
It is real that machine equipment (can be personal computer, server, or network equipment etc.) or processor (processor) perform the present invention
Apply all or part of step of each embodiment device of example.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage
Device (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or light
Disk etc. is various can be with the medium of store program codes.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
The present invention has been described in detail, it will be understood by those within the art that：It still can be to foregoing each implementation
Technical scheme described in example is modified, or carries out equivalent to which part technical characteristic；And these modification or
Replace, do not make the spirit and scope of essence disengaging each embodiment technical scheme of the embodiment of the present invention of appropriate technical solution.
These are only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all it is of the invention spirit and
Any modification, equivalent and improvement for being made within principle etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of changing method of video, it is characterised in that including：
The video image in the multiple regions of collection；
Respectively each video image is carried out recognition of face to detect the current state in the region；
Determined to play the priority of video image according to region and current state；
The video image of the highest priority is switched into display picture.
2. the method for claim 1, it is characterised in that the video image in the multiple regions of collection includes：
Using multiple cameras collection dais close-up image, dais panoramic picture, student's close-up image, student's panoramic picture and black
Plate close-up image.
3. the method for claim 1, it is characterised in that the video image of the highest priority is being switched into display
After picture, also include：
It is the display picture that the video pictures are kept in preset duration；
After the preset duration, determine to play the priority of video image again according to region and current state；
If current priority highest video image is not original video image, by current priority highest video image
Switch to display picture.
4. the method for claim 1, it is characterised in that it is described to detect to carry out recognition of face to each video image respectively
The current state in region includes:
Recognize face move when, automatically adjust camera angle so that face be in the video image center or
Specific position in the video image.
5. the method for claim 1, it is characterised in that
Multiple regions include the region in local region and teleclass, in the local and teleclass, including
One is presided over classroom and more than one classroom；
Determine that the priority for playing video image includes according to region and current state：
The priority of the hosting classroom and the classroom is set according to default rule.
6. a kind of switching device of video, it is characterised in that including：
Acquisition module, the video image for gathering multiple regions；
Detection module, for carrying out recognition of face to detect the current state in the region to each video image respectively；
First determining module, for being determined to play the priority of video image according to region and current state；
First handover module, for the video image of the highest priority to be switched into display picture.
7. device as claimed in claim 6, it is characterised in that shown acquisition module is additionally operable to：
Using multiple cameras collection dais close-up image, dais panoramic picture, student's close-up image, student's panoramic picture and black
Plate close-up image.
8. device as claimed in claim 6, it is characterised in that also include：
Display module, is the display picture for keeping the video pictures in preset duration；
Second determining module, for after the preset duration, determining to play video figure again according to region and current state
The priority of picture；
Second handover module, in the case of not being original video image in current priority highest video image, then will
Current priority highest video image switches to display picture.
9. device as claimed in claim 6, it is characterised in that the detection module is additionally operable to:
Recognize face move when, automatically adjust camera angle so that face be in the video image center or
Specific position in the video image.
10. device as claimed in claim 6, it is characterised in that
Multiple regions include the region in local region and teleclass, in the local and teleclass, including
One is presided over classroom and more than one classroom；
First determining module is additionally operable to：
The priority of the hosting classroom and the classroom is set according to default rule.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611036852.1A CN106791485B (en) | 2016-11-16 | 2016-11-16 | Video switching method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611036852.1A CN106791485B (en) | 2016-11-16 | 2016-11-16 | Video switching method and device |
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| CN106791485A true CN106791485A (en) | 2017-05-31 |
| CN106791485B CN106791485B (en) | 2020-02-07 |
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| CN201611036852.1A Expired - Fee Related CN106791485B (en) | 2016-11-16 | 2016-11-16 | Video switching method and device |
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Cited By (21)
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| CN107810472A (en) * | 2015-06-24 | 2018-03-16 | 三星电子株式会社 | Electronic installation and the method for the display for controlling panoramic picture |
| CN107809563A (en) * | 2017-11-30 | 2018-03-16 | 浙江大华技术股份有限公司 | A kind of writing on the blackboard detecting system, method and device |
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| CN114257757A (en) * | 2021-12-21 | 2022-03-29 | 睿魔智能科技（深圳）有限公司 | Automatic cutting and switching method and system of video, video player and storage medium |
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| CN114401365A (en) * | 2021-12-31 | 2022-04-26 | 广东省教育研究院 | Target person identification method, video switching method and device |
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