CN104408983B - Intelligent tutoring information processing system based on recorded broadcast equipment - Google Patents
Intelligent tutoring information processing system based on recorded broadcast equipment Download PDFInfo
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- CN104408983B CN104408983B CN201410778219.4A CN201410778219A CN104408983B CN 104408983 B CN104408983 B CN 104408983B CN 201410778219 A CN201410778219 A CN 201410778219A CN 104408983 B CN104408983 B CN 104408983B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B5/00—Electrically-operated educational appliances
- G09B5/06—Electrically-operated educational appliances with both visual and audible presentation of the material to be studied
- G09B5/065—Combinations of audio and video presentations, e.g. videotapes, videodiscs, television systems
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Abstract
A kind of intelligent tutoring information processor based on recorded broadcast equipment, including teacher's PC, records video camera, image detection video camera, pickup transmitter, apparatus for processing audio and recorded broadcast main frame;Teacher's PC, recording video camera are connected with recorded broadcast main frame with image detection video camera;Pickup transmitter is connected with recorded broadcast main frame by apparatus for processing audio, and including tracking main frame, teacher's PC, recording video camera are connected with recorded broadcast main frame by tracking main frame with image detection video camera.The present invention relies on AVA intelligence recording and broadcasting systems realize teacher in the process that gives lessons while mark education informations form xml document automatically, video record is completed just can synchronous recording knowledge point and teaching link information, be available for the retrieval of teachers and students, and by being embedded into web player and mobile terminal playing device in virtual sliced sheet information realization quickly jump to corresponding time point and checked.
Description
Technical field
The present invention relates to a kind of Teaching Information Processing System, specifically, is to be related to a kind of intelligence based on recorded broadcast equipment
Teaching Information Processing System.
Background technology
Recorded broadcast equipment has been increasingly becoming the construction of school information classroom with the propulsion of China's Process of Educational Informationization
One standard configuration Teaching Equipment, numerous teachers can independently be carried out the teaching process for routinizing and record by recorded broadcast equipment.With
The raising of video technique performance and availability and the raising of teacher's information's technological literacy, teacher carry out classroom using video technique
Teaching research is increasingly becoming reality.
With the facilitation of recorded video, how from retrieval teaching information in the video that records in a large number (knowledge point, teaching ring
Section) become the important step of instructional video resource management and video resource application.Teachers' hope can be as using textual resources one
Sample easily carries out the operation of video class resource, as being labeled to text, easily video can be labeled.
The demand of video labeling instrument is ready to appear.
The present invention is on the basis of intelligent recording and broadcasting system to make expanded application, can synchronously adopt in recorded broadcast main frame recorded video
Collection education informations (knowledge point, teaching link) forms xml mark files, while develop can read automatically the xml mark texts
The web player of part, realizes that clicking on mark quickly jumps to corresponding video fragment, allows Faculty and Students browsing instructional video
Shi Gengjia is convenient.
At present some universities of foreign countries develop many video labeling instruments, such as, Media Tagger, ANVIL,
VideoTraces, MediaNotes, VAST, VITAL, StudioCode, VAT, DIVER, IVAN and Transana etc..Video
Annotation tool allows user either synchronously or asynchronously to watch video, can according to oneself need editing is carried out to video, while can be with
Video is labeled and is commented on.Video interception and video frequency tracking is provided in video labeling instrument, it is allowed to which user is put into practice at them
In accurate specific on the feedback that synchronizes.In some video labeling softwares, user can define they want for
The standard of analysis (or mark), supports oneself establishing label, such as VAST.There are some softwares directly to provide the user with label use
In mark.In most of video labeling softwares, user can emphasize some parts of video and add comment.Some softwares are also
Support to upload the video for marking by network, shared with other self-examination persons, and others can also launch further to comment to which
By, so as to common construction is introspected, such as VAT and DIVER.Although these instruments respectively have difference in terms of ability, they main
It is that convenient customer analysis and feedback provide actual solution that purpose is.
Although above-mentioned software can complete the mark of instructional video information, there are some following shortcomings:
1st, these softwares need to go to complete video teaching information using software by special messenger after the completion of needing video record again
Mark, method does not complete automation mark.
2nd, these software major parts are based on c/s frameworks, check that education informations mark is required for using the software ability
Check the result of annotation.Ready-made markup information is not also broadcast from the angle for facilitating browser viewing education informations are embedded into
The inside of device is put, causes the video can only be video sharing, without doing when socialization software (forum, QQ or wechat etc.) is shared
Method is shared the education informations contained in video in the lump, have impact on the related education informations of other people fast browsing.
The reason for causing drawbacks described above:It is recording that recorded broadcast equipment on market can be only done instructional video first, and neglects
Depending on the synchronous recording of classroom instruction information (knowledge point, teaching link), provide more when supplying teachers and students' program request after class in order to video
Accurately Classroom Information, is in addition exactly not account for how realizing quickly mark under the framework of b/s and looked into by page end
See mark.
Content of the invention
For above-mentioned deficiency of the prior art, present invention offer is a kind of to realize teacher in the process that gives lessons while automatically
Mark education informations form xml document, video record complete just can synchronous recording knowledge point and teaching link information based on record
Broadcast intelligent tutoring information processor and the method for equipment.
The technical solution used in the present invention is:
A kind of intelligent tutoring information processor based on recorded broadcast equipment, including teacher's PC, records video camera, image inspection
Survey video camera, pickup transmitter, apparatus for processing audio and recorded broadcast main frame;Teacher's PC, recording video camera and image detection video camera
It is connected with recorded broadcast main frame;Pickup transmitter is connected with recorded broadcast main frame by apparatus for processing audio, including tracking main frame, the religion
Teacher's PC, recording video camera are connected with recorded broadcast main frame by tracking main frame with image detection video camera.
A kind of intelligent tutoring information processing method based on recorded broadcast equipment,
Powerpoint education informations technological documents played by teacher's PC;
Recorded broadcast main frame recorded video file;
Powerpoint education informations technological documents recorded by recorded broadcast main frame;
Recorded broadcast main frame is provided with video signal source logging modle and Powerpoint education informations technological document detection modules.
In instructional video recording process, the video signal source logging modle is detected to video signal source;
Video signal source logging modle is detected after video signal source switches;
Video signal source logging modle sends instruction to recorded broadcast main frame, recorded broadcast main frame will impart knowledge to students in education informations log file
Carry out recording and while mark the state of switching and the moment point of switching, formation moment point, the one-to-one xml of switching state are literary
Part.
In instructional video recording process, the Powerpoint education informations technological document detection module is to computer mouse
Or the click event of keyboard is detected;
When having mouse or keyboard that click event occurs, Powerpoint education informations technological documents detection module is obtained works as
The heading message of front ppt;
Instruction, recorded broadcast host record moment point and the information of title are sent to recorded broadcast main frame, PowerPoint titles are formed
With the one-to-one xml document of moment point.
The beneficial effect of hinge structure of the present invention:
Intelligent tutoring information processor of the present invention based on recorded broadcast equipment, relies on AVA intelligence recording and broadcasting systems realize teaching
Teacher is in the process that gives lessons while marking automatically education informations to form xml document, video record is completed just can synchronous recording knowledge point
With teaching link information, be available for the retrieval of teachers and students, and by being embedded into web player and mobile terminal playing device in virtuality
Slice information realizes that quickly jumping to corresponding time point is checked.
Of the invention instructional video is needed with existing technical scheme also to need to arrange special messenger using instrument to religion after the completion of recording
Learning video recording carries out whole process and reviews comparing, present invention achieves the side of instructional video is recorded, while teaching behavior analysis record is completed, and greatly
The efficiency of instructional video analysis is improve greatly.
The present invention is different from other video analysis softwares based on CS frameworks and needs to install, the secondary analysis work in this patent
Tool is based entirely on B/S framework, as long as user just can achieve to carry out quickly instructional video knowledge point, teaching link by browser
Manual analysis.By the developing plug to player, it is achieved that knowledge point, teaching link can be embedded into inside player, and
Can achieve to click on some knowledge point or teaching link quickly jumps to corresponding moment point, be easy to looking into for Faculty and Students
See.The plug-in unit of player realizes that it is also this patent protection point to assume knowledge point inside player with teaching link.
Advantages of the present invention is as follows:
1. teacher only needs to record knowledge point when preparing lessons in ppt files, after completing to record, just can be the video
Knowledge point synchronous recording gets off, it is no longer necessary to artificial secondary editor, and in program request, the video is constantly realized quickly for Faculty and Students
Review knowledge point fragment.
2. the Shot change and the other switch logic of scape during giving lessons according to teachers and students, synchronously can be experienced whole teaching process
Teaching link such as teacher's instruction, classroom interactions, teacher's writing on the blackboard, teacher's teaching of use media etc., these teaching link information pair
Objective reference data is provided in the teaching behavior of analysis teacher, and no longer needs artificial secondary analysis to be carried out to video.
3. the education informations being embedded in player such as knowledge point, teaching link component provide can teachers and students' program request instructional video
More convenient during source, and can be while the education informations in video while sharing when sharing other socialization softwares.
Description of the drawings
Fig. 1 is intelligent recorded broadcast main machine structure figure structure schematic representation;
Fig. 2 is structural representation of the present invention based on the intelligent tutoring message processing module of recorded broadcast equipment;
Fig. 3 is that video signal source switching logging modle of the present invention realizes schematic flow sheet;
Fig. 4 be the present invention for the definition mode schematic diagram of knowledge point virtual sliced sheet;
Fig. 5 is the workflow schematic diagram of Powerpoint education informations technological document detection module of the present invention;
Fig. 6 is the education informations plug-in unit operation principle of Jwplayer players of the present invention.
Critical piece symbol description in accompanying drawing:
Specific embodiment
Referring to the drawings and embodiment the present invention will be described in detail:
Accompanying drawing 1-6 understands that a kind of intelligent tutoring information processor based on recorded broadcast equipment, including teacher's PC, recording
Video camera, image detection video camera, pickup transmitter, apparatus for processing audio and recorded broadcast main frame;Teacher's PC, recording video camera and figure
As detection video camera is connected with recorded broadcast main frame;Pickup transmitter is connected with recorded broadcast main frame by apparatus for processing audio, including with
Track main frame, teacher's PC, recording video camera are connected with recorded broadcast main frame by tracking main frame with image detection video camera.
A kind of intelligent tutoring information processing method based on recorded broadcast equipment,
It is Powerpoint files that Powerpoint education informations technological documents played by teacher's PC;
Recorded broadcast main frame recorded video file;
Powerpoint education informations technological documents recorded by recorded broadcast main frame;
Recorded broadcast main frame is provided with video signal source logging modle and education informations technological document i.e. Powerpoint detection moulds
Block.
In instructional video recording process, the video signal source logging modle is detected to video signal source;
Video signal source logging modle is detected after video signal source switches;
Video signal source logging modle sends instruction to recorded broadcast main frame, recorded broadcast main frame will impart knowledge to students in education informations log file
Carry out recording and while mark the state of switching and the moment point of switching, formation moment point, the one-to-one xml of switching state are literary
Part.
The Powerpoint information detecting modules are detected to the click event of computer mouse or keyboard;
When having mouse or keyboard that click event occurs, Powerpoint information detecting modules obtain the title 1 of current ppt
Information;
Instruction, recorded broadcast host record moment point and the information of title 1 are sent to recorded broadcast main frame, PowerPoint titles are formed
With the one-to-one xml document of moment point.
The information of recorded broadcast main frame real-time monitoring Shot change and PC mouses (keyboard) click on event, when occur Shot change and
Mouse (keyboard) click event can inform recorded broadcast main frame in event write xml document immediately.
During the video record, the switching behavior of all signal sources (camera, VGA signals) is remembered one by one
Record.
Change of the module of camera signals switching by image detection camera signal source signal.
Intelligent tutoring information processing system of the present invention based on recorded broadcast equipment,
Rely on AVA intelligence recording and broadcasting systems can realize teacher in the process that gives lessons and simultaneously automatically mark education informations (knowledge point,
Teaching link) form xml document, video record complete just can synchronous recording knowledge point and teaching link information, be available for teachers and students'
Retrieval, and by being embedded into web player and mobile terminal playing device in virtual sliced sheet information realization quickly jump to accordingly
Time point is checked.
Of the invention instructional video is needed with existing technical scheme also to need to arrange special messenger using instrument to religion after the completion of recording
Learning video recording carries out whole process and reviews comparing, present invention achieves the side of instructional video is recorded, while teaching behavior analysis record is completed, and greatly
The efficiency of instructional video analysis is improve greatly.
Other video analysis softwares are different from based on CS frameworks and need to install, the secondary analysis instrument in this patent is complete
B/S framework is based on, as long as user just can achieve rapid artificial point to be carried out to instructional video knowledge point, teaching link by browser
Analysis.By the developing plug to player, it is achieved that knowledge point, teaching link can be embedded into inside player, and be can achieve
Click on some knowledge point or teaching link quickly jumps to corresponding moment point, be easy to checking for Faculty and Students.Play
The plug-in unit of device realizes that it is also this patent protection point to assume knowledge point inside player with teaching link.
Advantages of the present invention is as follows:
1. teacher only needs to record knowledge point when preparing lessons in ppt files, after completing to record, just can be the video
Knowledge point synchronous recording gets off, and two no longer need artificial secondary editor, and in program request, the video is constantly realized soon for Faculty and Students
Fast reviews knowledge point fragment.
2. the Shot change and the other switch logic of scape during giving lessons according to teachers and students, synchronously can be experienced whole teaching process
Teaching link (such as teacher's instruction, classroom interactions, teacher's writing on the blackboard, teacher's teaching of use media) etc., these teaching link information
For the teaching behavior of analysis teacher provides objective reference data, and no longer need to carry out artificial secondary analysis to video.
3. education informations (the knowledge point, teaching link) component being embedded in player provides can teachers and students' program request instructional video
More convenient during source, and can be while the education informations in video while sharing when sharing other socialization softwares.
3 video signal source of the present invention of accompanying drawing switching logging modle realizes that flow process is as follows:
After starting recorded video, recorded broadcast main frame can carry out whole recording according to the form of MP4 to video automatically.Recorded broadcast master
Machine is due to being concurrently accessed the video signal source of multichannel, it is therefore desirable to which manually or automatically mode is to the multi-channel video that accesses
Signal source is switched over, and switches logging modle on backstage by video signal source while recording operation now.Assume
Teacher region has two video cameras to be responsible for shooting, responsible teacher's pan-shot 01, and responsible teacher's feature shoots 02, that
When recording starting time the 1st:When 10, teacher stands firm teaching at dais, and recorded broadcast main frame is needed teacher's feature vision signal
Source 01 is switched in main broadcaster's picture of final recording, and in video signal source switching logging modle writes a record " 1:
10, teacher's feature ", when the 1st:When dais region is walked about on a large scale, recorded broadcast main frame needs teacher's aphorama 20 teachers
Frequency source signal 02 is switched in main broadcaster's picture of final recording, and in video signal source switching logging modle writes a note
Record " 1:20, teacher's panorama ", the video signal source of recorded broadcast main frame often switch once that (switching of video signal source can pass through artificial
Instructor in broadcasting control is carried out manually, it is also possible to which coordinating with image trace main frame by recorded broadcast main frame carries out Autoconducting control), Jiu Hui
The picture of a record, the time of the current switching of record and current video signal source is write in video signal source switching logging modle
Attribute (such as teacher's panorama, teacher's feature, student's panorama, student's feature, writing on the blackboard, courseware computer picture etc.);In the same manner, student region
It is also to carry out recording, judge, record using same technology with writing on the blackboard region;If under Autoconducting pattern, the 10th:00 teacher grasps
Make courseware computer and some exercise coursewares are explained to student, then the PPT inspection softwares being mounted in Computer for teachers in advance can give recorded broadcast master
Machine sends order and informs now needs the picture for being switched to Computer for teachers, and video signal source quickly can be switched to by recorded broadcast main frame
VGA pictures are simultaneously presented in main broadcaster's picture, and in video signal source switching logging modle write a record " 10:00, VGA
Computer picture ", when click on " stopping " rear video stop record, can generate in recorded broadcast main frame a complete MP4 video file with
And the xml document that logging modle record is generated is switched by video signal source.
In order to further represent automatically teaching link, xml document form and teaching ring of the present invention to the record of video camera
The definition of section:
File name formats:SW+RecID.xml
<?Xml version=" 1.0 " encoding=" gb2312 "?>
<SWITCH>
<ITEM TIME=" 0 " ACTION=" VGA "/>
<ITEM TIME=" 7985 " ACTION=" T "/>
<ITEM TIME=" 9516 " ACTION=" S "/>
<ITEM TIME=" 11500 " ACTION=" B "/>
<ITEM TIME=" 13110 " ACTION=" VGA "/>
<ITEM TIME=" 16688 " ACTION=" END "/>
</SWITCH>
Various ACTION explanations are presented herein below:
Below each link is defined
Fig. 4 present invention is as follows with regard to the definition mode of knowledge point virtual sliced sheet:
By capturing software to Computer for teachers PPT, the present invention realizes that knowledge point automatically analyzes.
The present invention define teacher during class demonstration is carried out using PowerPoint, the title 1 of PowerPoint
It is exactly teaching knowledge main points, is the important evidence of classroom instruction knowledge switching.During teacher switches PowerPoint page,
The interval time of 2 PowerPoint page switching just lectures the time of this knowledge point for teacher, i.e., between 2 PowerPoint page just
It is the virtual sliced sheet of a knowledge point.
The course of work of Fig. 5 Powerpoint education informations technological document detection modules of the present invention is as follows:
Teacher is with can apply to the multimedia soft hardware such as PC and PPT, function master to media when giving lessons
If by installing a PPT inspection softwares in teachers' instruction PC computers, recording and generating so as to be analyzed to the PPT that gives lessons
Virtual sliced sheet knowledge point;As teacher's one class of 45 minutes has multiple emphasis and knowledge point, these knowledge points how are recorded
With it is important that invention key, by preassembled PPT inspection softwares, when teacher's PPT played in full screen, can grab automatically
The time of this page of PPT video of title 1 and switching of now this page of PPT is taken, and sends this data to recorded broadcast main frame, by recorded broadcast
Main frame PowerPoint detections logging modle is recorded;Assume the 5th:00 operation of teacher computer is switched to first page PPT to start
Lecture the content of courses of paper pot (one display content of page head be paper pot to boil water) to boil water, then now recorded broadcast main frame
PowerPoint detections logging modle can write down an information " 5:00, paper pot is to boil water ";If the 10th:00 operation of teacher computer switches
Start to lecture paper pot principle to boil water to second page PPT (this page of one display content of PPT titles is paper pot principle to boil water), then
Now recorded broadcast main frame PowerPoint detections logging modle can write down an information " 10:00, paper pot principle to boil water ";If the
15:00 operation of teacher computer is switched to the PPT of page three to start to lecture paper pot experimental implementation flow process (this page of PPT title one to boil water
Display content is paper pot experimental implementation flow process to boil water), then the main PowerPoint detections logging modle of now recorded broadcast can be write down
One information " 10:00, paper pot experimental implementation flow process to boil water ";If the 20th:00 teachers' instruction terminates and stops recorded video, this
When recorded broadcast main frame PowerPoint detection logging modle have recorded altogether three information, form an xml document;Taught by analysis
Teacher learns in classroom, and teacher is 5:00-10:00 this time period start explain paper pot to boil water, 10:00-15:00 this time period
Explanation paper pot principle to boil water, 15:00-20:00 this time period explanation paper pot experimental implementation flow process to boil water, whole classroom
Three important knowledge points are said altogether, when system default teacher starts to operate new page PPT, has exactly started to lecture one
New knowledge point, starting for new knowledge point time is exactly to go up finishing for a knowledge point time.By the xml for analyzing texts
After part and video are associated with player, the either player at PC ends or the player of mobile terminal can be complete in video
There is one " knowledge point button " in upper right corner when screen is played at video playback interface, clicks on this button and can teach this class
Three knowledge points that teacher lectures are shown in the form of word, and student wants study " paper pot principle to boil water " and only needs to a little
Corresponding word is hit, video file will automatically jump to the 5th according to the time started of the knowledge point:00 commences play out, from
And realize quick effectively the destination of study.Remember with xml document as knowledge point making and generation are based only on video time axle
One bottom fusion of record time, does not substantially destroy the integrality of source video, and video energy when played in full screen
Enough knowledge point is switched over, therefore the technology is called virtual sliced sheet technology.
The education informations plug-in workflow journey of Fig. 6 Jwplayer players of the present invention is as follows:
The present invention on the basis of jwplayer web player source codes of increasing income increased knowledge point and be inserted with teaching link
Part.The icon of plug-in unit can be embedded in player intra-zone, when the icon is clicked on, can eject the row being embedded in inside player
Bezel, cluster reads out corresponding knowledge point or teaching link xml document;When user clicks on some knowledge point or teaching link,
The plug-in unit can inform that player jumps to corresponding moment point, it is achieved thereby that realizing on the premise of video file is not destroyed
The quick segmentation of education informations program requests with redirect.
Plug-in unit can make study based on video resource more just sharing other socialization softwares with player
Prompt.On mobile terminals, it is also adopted by same solution and devises being embedded in player education informations log file
Presentation mode, facilitates teachers and students to use mobile terminal order video.
Jwplayer is the Flash videos, audio frequency and the picture players that use on webpage that increases income, it insert
Part framework and JavaScript API allow third party extend its function.Knowledge point and teaching link plug-in unit, inherit former
On the basis of some Jwplayer plug-in units, the button for reading education informations xml document is increased in video player, this is clicked on and is pressed
Button, it will read knowledge point xml document or teaching link xml document, the teaching in this document and time point are presented on and are broadcast
Put in device inline boxes, when user clicks on some knowledge point or teaching link, control player jumps to the time of corresponding to
Point.
The virtual sliced sheet of video is to make use of Adaptive streaming standard features, and video is drawn by several seconds portions
It is divided into fragments fragments, it is only necessary to read a small-sized manifest text or xml, you can realize redirecting immediately or obtaining
Wherein fragment is taken, the service end of the primary Adaptive streaming for supporting to adapt to various of Jwplayer is realized.
Such as user only needs to add surrounding time point after video link, such as:“http://www.example.com/
video.mp4?Download acquisition video time period video by start=15&end=45' ".Thus so as to realizing not changing
Inside video file, realize the quick segmentation of education informations program request and redirect by visual mode.
Claims (2)
1. the intelligent tutoring information processing system based on recorded broadcast equipment, it is characterised in that:Including teacher's PC, record video camera,
Image detection video camera, pickup transmitter, apparatus for processing audio and recorded broadcast main frame;Teacher's PC, recording video camera and image detection
Video camera is connected with recorded broadcast main frame;Pickup transmitter is connected with recorded broadcast main frame by apparatus for processing audio, also includes tracking master
Machine, teacher's PC, recording video camera are connected with recorded broadcast main frame by tracking main frame with image detection video camera;
Powerpoint education informations technological documents played by teacher's PC;
Recorded broadcast main frame recorded video file;
Powerpoint education informations technological documents recorded by recorded broadcast main frame;
Recorded broadcast main frame is provided with video signal source logging modle and Powerpoint education informations technological document detection modules;
In instructional video recording process, the video signal source logging modle is detected to video signal source;
Video signal source logging modle is detected after video signal source switches;
Video signal source logging modle sends instruction to recorded broadcast main frame, and education informations log file in teaching is carried out by recorded broadcast main frame
Record simultaneously marks the state of switching and the moment point of switching simultaneously, forms moment point, the one-to-one xml document of switching state.
2. intelligent tutoring information processing system according to claim 1 based on recorded broadcast equipment, it is characterised in that:
In instructional video recording process, the Powerpoint education informations technological document detection module to computer mouse or
The click event of keyboard is detected;
When having mouse or keyboard that click event occurs, Powerpoint education informations technological documents detection module obtains current
The heading message of ppt;
Send instruction to recorded broadcast main frame, the information of recorded broadcast host record moment point and title, formed PowerPoint titles and when
The one-to-one xml document of punctum.
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