CN104408983A - Recording and broadcasting equipment-based intelligent teaching information processing device and method - Google Patents
Recording and broadcasting equipment-based intelligent teaching information processing device and method Download PDFInfo
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- CN104408983A CN104408983A CN201410778219.4A CN201410778219A CN104408983A CN 104408983 A CN104408983 A CN 104408983A CN 201410778219 A CN201410778219 A CN 201410778219A CN 104408983 A CN104408983 A CN 104408983A
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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
The invention relates to a recording and broadcasting equipment-based intelligent teaching information processing device, which comprises a teacher PC (personal computer), recording cameras, image detection cameras, pickup transmitters, an audio processing device and a recording and broadcasting host, wherein the teacher PC, the recording cameras and the image detection cameras are connected with the recording and broadcasting host; the pickup transmitters are connected with the recording and broadcasting host through the audio processing device. The device comprises a tracking host, wherein the teacher PC, the recording cameras and the image detection cameras are connected with the recording and broadcast host through the tracking host. According to the device, teaching information can be automatically marked to form an xml (extensible markup language) file in a teaching process of a teacher by virtue of an AVA intelligent recording and broadcasting system, knowledge points and teaching link information can be synchronously recorded for the retrieval of the teacher and students after a video is recorded, and the rapidly jumping to corresponding time points for viewing by virtue of virtual slice information embedded into a web player and a mobile terminal player is achieved.
Description
Technical field
The present invention relates to a kind of Teaching Information Processing System, specifically, relate to a kind of intelligent tutoring signal conditioning package based on recorded broadcast equipment and method.
Background technology
Recorded broadcast equipment, along with the propelling of China's Process of Educational Informationization, has become the standard configuration Teaching Equipment that school information classroom is built gradually, and numerous teachers independently can carry out by recorded broadcast equipment the teaching process routinized and record.Along with video technique performance and the raising of availability and the raising of teacher's information's technological literacy, teacher utilizes video technique to carry out classroom instruction research and also becomes a reality gradually.
Along with the facilitation of recorded video, how from a large amount of video recorded, retrieval teaching information (knowledge point, teaching link) becomes the important step that instructional video resource management and video resource apply.Teachers' hope can as using the operation carrying out video class resource textual resources easily, likely carries out mark to text, can mark video easily.The demand of video labeling instrument is ready to appear.
The present invention makes expanded application on the basis of intelligent recording and broadcasting system, xml mark file can be formed by synchronous acquisition education informations (knowledge point, teaching link) when recorded broadcast main frame recorded video, develop simultaneously and automatically can read the web player that this xml marks file, realizing clicking mark and jump to corresponding video fragment fast, making Faculty and Students more convenient when browsing instructional video.
More external universities develop many video labeling instruments at present, such as, and Media Tagger, ANVIL, VideoTraces, MediaNotes, VAST, VITAL, StudioCode, VAT, DIVER, IVAN and Transana etc.Video labeling instrument allows the synchronous or asynchronous viewing video of user, can according to oneself need editing is carried out to video, can mark video and comment on simultaneously.Video interception and video frequency tracking are provided in video labeling instrument, allow user they practice in specific accurately on carry out synchronous feedback.In some video labeling softwares, user can define them and want, for the standard of analysis (or mark), to support oneself establishing label, as VAST.Some softwares are also had to provide label for mark directly to user.In most of video labeling software, user can emphasize some part of video and add comment.Some software is also supported to upload by network the video marked, and shares with other self-examination persons, and others also can launch further comment to it, thus common construction self-examination, as VAT and DIVER.Although these instruments respectively have difference in ability, their fundamental purpose is for convenient customer analysis and feedback provide actual solution.
Although above-mentioned software can complete the mark of instructional video information, there are some following shortcomings:
1, these softwares need after needing video record to complete to utilize software to remove the mark of video teaching information by special messenger again, and way does not complete robotization mark.
2, these software major parts are based on c/s framework, check that education informations mark all needs to use this software just can check the result of annotations and comments.Ready-made markup information is not also embedded into education informations from the angle facilitating browser to watch the inside of player, cause video can only video sharing when socialization software (forum, QQ or micro-letter etc.) is shared, and have no idea the education informations contained in video to share in the lump, have impact on the education informations that other people fast browsing is relevant.
Cause the reason of above-mentioned defect: be first the recording that recorded broadcast equipment on market can only complete instructional video, and ignore the synchronous recording of classroom instruction information (knowledge point, teaching link), so that video provides Classroom Information more accurately for during teachers and students' program request after class, be exactly do not consider how to realize marking fast and checking mark by page end under the framework of b/s in addition.
Summary of the invention
For above-mentioned deficiency of the prior art, the invention provides a kind of can realize teacher the process of giving lessons simultaneously automatic mark education informations form xml file, video record completes just can the intelligent tutoring signal conditioning package based on recorded broadcast equipment of synchronous recording knowledge point and teaching link information and method.
The technical solution used in the present invention is:
Based on an intelligent tutoring signal conditioning package for recorded broadcast equipment, comprise teacher's PC, record video camera, image detects video camera, pickup transmitter, apparatus for processing audio and recorded broadcast main frame; Teacher's PC, recording video camera detect video camera with image and are connected with recorded broadcast main frame; Pickup transmitter is connected with recorded broadcast main frame by apparatus for processing audio, comprises tracking main frame, and described teacher's PC, recording video camera and image detect video camera and be connected with recorded broadcast main frame by following the tracks of main frame.
Based on an intelligent tutoring information processing method for recorded broadcast equipment,
Education informations technological document play by teacher's PC;
Recorded broadcast main frame recorded video file;
Education informations technological document 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 module.
In instructional video recording process, described video signal source logging modle detects video signal source;
After video signal source logging modle detects that video signal source switches;
Video signal source logging modle sends instruction to recorded broadcast main frame, and education informations log file in teaching carries out recording and the moment point of the state switched with tense marker and switching by recorded broadcast main frame, forms moment point, switching state xml file one to one.
In instructional video recording process, the click event of described Powerpoint education informations technological document detection module to computer mouse or keyboard detects;
When having mouse or keyboard generation click event, Powerpoint education informations technological document detection module obtains the heading message of current ppt;
Send instruction to recorded broadcast main frame, the information of recorded broadcast host record moment point and title, form PowerPoint title and moment point xml file one to one.
The beneficial effect of hinge structure of the present invention:
The present invention is based on the intelligent tutoring signal conditioning package of recorded broadcast equipment, rely on AVA intelligence recording and broadcasting system can realize teacher at the process of giving lessons automatic mark education informations formation simultaneously xml file, video record completes just can synchronous recording knowledge point and teaching link information, can for the retrieval of teachers and students, and jump to corresponding time point fast by the virtual sliced sheet information realization be embedded in web player and mobile terminal playing device and check.
The present invention also needs to arrange special messenger to use instrument to carry out compared with whole process reviews to Teaching video recording after needing instructional video to record with existing technical scheme, the limit that present invention achieves instructional video is recorded, while complete teaching behavior analytic record, substantially increase the efficiency that instructional video is analyzed.
The present invention be different from other video analysis software based on CS framework and need install, the secondary analysis instrument in this patent is completely based on B/S framework, as long as user just can realize carrying out rapid artificial analysis to instructional video knowledge point, teaching link by browser.By the developing plug to player, achieve and knowledge point, teaching link can be embedded into player inside, and can realize clicking some knowledge points or teaching link jumps to corresponding moment point fast, be convenient to checking of Faculty and Students.The plug-in unit realization of player presents knowledge point in player inside and teaching link is also that this patent protects point.
Advantage of the present invention is as follows:
1. teacher only needs in ppt file, to have recorded knowledge point when preparing lessons, after completing recording, just the knowledge point synchronous recording of this video can be got off, no longer need artificial secondary editor, Faculty and Students realize reviewing knowledge point fragment fast at this video of program request constantly.
2. to give lessons Shot change in process and the other switch logic of scape according to teachers and students, the teaching link that the synchronous whole teaching process of energy experiences is as teacher's instruction, classroom interactions, teacher's writing on the blackboard, teacher's teaching of use media etc., these teaching link information provide objective reference data for the teaching behavior analyzing teacher, and no longer need to carry out artificial secondary analysis to video.
3. be embedded into education informations in player as more convenient when knowledge point, teaching link assembly can make teachers and students' program request instructional video resource, and can the education informations in video be shared when sharing other socialization softwares simultaneously simultaneously.
Accompanying drawing explanation
Fig. 1 is intelligent recorded broadcast main machine structure figure structure schematic representation;
Fig. 2 is the structural representation of the intelligent tutoring message processing module that the present invention is based on recorded broadcast equipment;
Fig. 3 is that video signal source of the present invention switches logging modle realization flow schematic diagram;
Fig. 4 is the definition mode schematic diagram of the present invention for 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 principle of work of Jwplayer player of the present invention.
Critical piece symbol description in accompanying drawing:
Embodiment
Referring to drawings and Examples, the present invention will be described in detail:
Accompanying drawing 1-6 is known, a kind of intelligent tutoring signal conditioning package based on recorded broadcast equipment, comprises teacher's PC, records video camera, image detects video camera, pickup transmitter, apparatus for processing audio and recorded broadcast main frame; Teacher's PC, recording video camera detect video camera with image and are connected with recorded broadcast main frame; Pickup transmitter is connected with recorded broadcast main frame by apparatus for processing audio, comprises tracking main frame, and described teacher's PC, recording video camera and image detect video camera and be connected with recorded broadcast main frame by following the tracks of main frame.
Based on an intelligent tutoring information processing method for recorded broadcast equipment,
Teacher's PC plays education informations technological document and Powerpoint file;
Recorded broadcast main frame recorded video file;
Education informations technological document recorded by recorded broadcast main frame;
Recorded broadcast main frame is provided with video signal source logging modle and education informations technological document and Powerpoint detection module.
In instructional video recording process, described video signal source logging modle detects video signal source;
After video signal source logging modle detects that video signal source switches;
Video signal source logging modle sends instruction to recorded broadcast main frame, and education informations log file in teaching carries out recording and the moment point of the state switched with tense marker and switching by recorded broadcast main frame, forms moment point, switching state xml file one to one.
The click event of described Powerpoint information detecting module to computer mouse or keyboard detects;
When having mouse or keyboard generation click event, Powerpoint information detecting module obtains title 1 information of current ppt;
Send instruction to recorded broadcast main frame, the information of recorded broadcast host record moment point and title 1, form PowerPoint title and moment point xml file one to one.
The information of recorded broadcast main frame Real-Time Monitoring Shot change and PC mouse (keyboard) click event, when occurring that Shot change and mouse (keyboard) click event can inform that recorded broadcast main frame is in event write xml file immediately.
In described video record process, record is one by one carried out to the switching behavior of all signal sources (camera, VGA signal).
The module that camera signals switches detects the change of camera signal source signal by image.
The present invention is based on the intelligent tutoring information handling system of recorded broadcast equipment,
Rely on AVA intelligence recording and broadcasting system can realize teacher's automatic mark education informations (knowledge point, teaching link) the process of giving lessons while and form xml file, video record completes just can synchronous recording knowledge point and teaching link information, can for the retrieval of teachers and students, and jump to corresponding time point fast by the virtual sliced sheet information realization be embedded in web player and mobile terminal playing device and check.
The present invention also needs to arrange special messenger to use instrument to carry out compared with whole process reviews to Teaching video recording after needing instructional video to record with existing technical scheme, the limit that present invention achieves instructional video is recorded, while complete teaching behavior analytic record, substantially increase the efficiency that instructional video is analyzed.
Be different from other video analysis software based on CS framework and need install, the secondary analysis instrument in this patent is completely based on B/S framework, as long as user just can realize carrying out rapid artificial analysis to instructional video knowledge point, teaching link by browser.By the developing plug to player, achieve and knowledge point, teaching link can be embedded into player inside, and can realize clicking some knowledge points or teaching link jumps to corresponding moment point fast, be convenient to checking of Faculty and Students.The plug-in unit realization of player presents knowledge point in player inside and teaching link is also that this patent protects point.
Advantage of the present invention is as follows:
1. teacher only needs in ppt file, to have recorded knowledge point when preparing lessons, after completing recording, just the knowledge point synchronous recording of this video can be got off, two no longer need artificial secondary editor, and Faculty and Students realize reviewing knowledge point fragment fast at this video of program request constantly.
2. to give lessons Shot change in process and the other switch logic of scape according to teachers and students, the teaching link (as teacher's instruction, classroom interactions, teacher's writing on the blackboard, teacher's teaching of use media) etc. that the synchronous whole teaching process of energy experiences, these teaching link information provide objective reference data for the teaching behavior analyzing teacher, and no longer need to carry out artificial secondary analysis to video.
3. more convenient when education informations (knowledge point, the teaching link) assembly be embedded in player can make teachers and students' program request instructional video resource, and can the education informations in video be shared simultaneously when sharing other socialization softwares simultaneously.
It is as follows that accompanying drawing 3 video signal source of the present invention switches logging modle realization flow:
After starting recorded video, recorded broadcast main frame automatically can carry out whole process according to the form of MP4 to video and record.Recorded broadcast main frame, owing to accessing the video signal source of multichannel simultaneously, therefore to need manually or automatically the multiplex video signal source of mode to access switches, and switches logging modle on backstage by video signal source and record operation now simultaneously.Suppose that teacher region has two video cameras to be responsible for shooting, responsible teacher's pan-shot 01, responsible teacher's feature shooting 02, so in time recording 1:10 start-up time, teacher to stand firm at dais teaching, recorded broadcast main frame needs teacher's feature video signal source 01 to be switched in the final main broadcaster's picture recorded, and switch in logging modle at video signal source and write a record " 1:10, teacher's feature ", when teacher 1:20 walks about on a large scale in region, dais time, recorded broadcast main frame needs teacher's panoramic video signal source 02 to be switched in the final main broadcaster's picture recorded, and switch in logging modle at video signal source and write a record " 1:20, teacher's panorama ", the video signal source of recorded broadcast main frame often switches once, and (switching of video signal source can by carrying out instructor in broadcasting's control manually, also can be coordinated with image trace main frame by recorded broadcast main frame and carry out Autoconducting control), will switch in logging modle at video signal source and write a record, the picture properties of the time and current video signal source of recording current switching is (as teacher's panorama, teacher's feature, student's panorama, student's feature, writing on the blackboard, courseware computer picture etc.), in like manner, student region and writing on the blackboard region be also adopt same technology to carry out recording, judge, record, if under Autoconducting pattern, 10:00 operation of teacher courseware computer is to some exercise coursewares of student explain, the PPT inspection software be contained in so in advance in Computer for teachers can send order to recorded broadcast main frame and inform the picture now needing to be switched to Computer for teachers, video signal source can be switched to VGA picture and be presented in main broadcaster's picture by recorded broadcast main frame fast, and a record " 10:00 is write in video signal source switching logging modle, VGA computer picture ", when click " stopping " rear video stops recording, a complete MP4 video file can be generated in recorded broadcast main frame and switch by video signal source the xml file that logging modle record generates.
In order to further automatic watch shows teaching link, the xml file layout of the present invention to the record of video camera and the definition of teaching link:
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>
Here is that various ACTION illustrates:
Below each link is defined
Fig. 4 the present invention is as follows about the definition mode of knowledge point virtual sliced sheet:
The present invention is by capturing the automatic analysis of software simulating knowledge point to Computer for teachers PPT.
The present invention defines teacher and carries out in the process of class demonstration at use PowerPoint, and the title 1 of PowerPoint is exactly teaching knowledge main points, is the important evidence that classroom instruction knowledge switches.Switch in the process of PowerPoint page teacher, the interval time of 2 PowerPoint page switchings, just for teacher lectures the time of this knowledge point, is namely exactly the virtual sliced sheet of a knowledge point between 2 PowerPoint pages.
The course of work of Fig. 5 Powerpoint of the present invention education informations technological document detection module is as follows:
Teacher can apply to the multimedia soft hardware such as PC and PPT when utilization is given lessons to media, this function mainly by installing a PPT inspection software in teachers' instruction PC computer, thus carries out analytic record to the PPT that gives lessons and generating virtual section knowledge point; Because teacher's one class of 45 minutes has multiple emphasis and knowledge point, how to record the key that these knowledge points and emphasis are inventions, by preassembled PPT inspection software, when teacher PPT played in full screen, meeting automatic capturing is the title 1 of this page of PPT and the time of switching this page of PPT video now, and these data are sent to recorded broadcast main frame, carries out record by recorded broadcast main frame PowerPoint detection record module; Suppose that 5:00 operation of teacher computer is switched to the content of courses that first page PPT starts to lecture paper pan boiling water (this page head one displaying contents is paper pan boiling water), so now recorded broadcast main frame PowerPoint detection record module can write down an information " 5:00, paper pan boiling water "; If 10:00 operation of teacher computer is switched to the principle (this page of PPT title one displaying contents is the principle of paper pan boiling water) that second page PPT starts to lecture paper pan boiling water, so now recorded broadcast main frame PowerPoint detection record module can write down an information " 10:00, the principle of paper pan boiling water "; If 15:00 operation of teacher computer is switched to the experimental implementation flow process (this page of PPT title one displaying contents is the experimental implementation flow process of paper pan boiling water) that the 3rd page of PPT starts to lecture paper pan boiling water, so now recorded broadcast main PowerPoint detection record module can write down an information " 10:00, the experimental implementation flow process of paper pan boiling water "; If 20:00 teachers' instruction terminates and stops recorded video, now recorded broadcast main frame PowerPoint detection record module have recorded altogether three information, forms an xml file; Learn by analyzing classroom, teacher started to explain paper pan boiling water in this time period of 5:00-10:00, the principle of paper pan boiling water is explained in this time period of 10:00-15:00, the experimental implementation flow process of paper pan boiling water is explained in this time period of 15:00-20:00, three important knowledge points have been said altogether in whole classroom, time system default teacher starts to operate new page PPT, start to lecture a new knowledge point exactly, starting of a new knowledge point time was exactly finishing of a upper knowledge point time.After the xml file analyzed and video are associated with player, no matter player or the player of mobile terminal of PC end, can occur in the upper right corner at video playback interface one " knowledge point button " when video played in full screen, click three knowledge points that this class teacher can lecture by this button to show with the form of word, student wants to learn " principle of paper pan boiling water " only to be needed to click corresponding word, video file will jump to 5:00 automatically according to the start time of this knowledge point to start to play, thus realize effective the destination of study fast.Make due to this knowledge point and generate and just merge based on a bottom of video time axle and xml documentation time, do not have in fact the integrality of destruction source video, and video can switch knowledge point when played in full screen, this technology is therefore claimed to be virtual sliced sheet technology.
The education informations plug-in workflow journey of Fig. 6 Jwplayer of the present invention player is as follows:
The present invention, on the basis of increasing income jwplayer web player source code, adds knowledge point and teaching link plug-in unit.The icon of plug-in unit can be embedded in player intra-zone, when clicking this icon, can eject the list box being embedded in player inside and reading out corresponding knowledge point or teaching link xml file; When user clicks some knowledge points or teaching link, this plug-in unit can inform that player jumps to corresponding moment point, thus achieves under the prerequisite not destroying video file, achieve education informations program request quick segmentation and redirect.
Plug-in unit can also share other socialization software along with player, makes the study based on video resource more convenient.On mobile terminals, also adopt same solution to devise to be embedded in education informations log file the presentation mode in player, facilitate teachers and students to use mobile terminal order video.
Jwplayer is the Flash video, audio frequency and the picture players that use on webpage of increasing income, and its plug-in architecture and JavaScript API allow third party can expand its function.Knowledge point and teaching link plug-in unit, inherit on original Jwplayer plug-in unit basis, the button reading education informations xml file is added in video player, click this button, knowledge point xml file or teaching link xml file will be read, teaching in this file and time point are presented in player inline boxes, and when user clicks some knowledge points or teaching link, control player jumps to and corresponds to time point.
The virtual sliced sheet of video make use of Adaptive streaming standard feature, video is divided into fragments fragment by portion in a few second, the manifest text only needing reading one small-sized or xml, can realize instant redirect or obtain wherein fragment, Jwplayer is primary supports that the service end adapting to various Adaptive streaming realizes.
Such as user only needs after video link, add surrounding time point, as: " http://www.example.com/video.mp4? start=15 & end=45' " this time period video of acquisition video can be downloaded.Thus thus realize do not change video file inside, realized quick segmentation and the redirect of education informations program request by visual mode.
Claims (4)
1., based on an intelligent tutoring signal conditioning package for recorded broadcast equipment, comprise teacher's PC, record video camera, image detects video camera, pickup transmitter, apparatus for processing audio and recorded broadcast main frame; Teacher's PC, recording video camera detect video camera with image and are connected with recorded broadcast main frame; Pickup transmitter is connected with recorded broadcast main frame by apparatus for processing audio, it is characterized in that, comprises tracking main frame, and described teacher's PC, recording video camera and image detect video camera and be connected with recorded broadcast main frame by following the tracks of main frame.
2., based on an intelligent tutoring information processing method for recorded broadcast equipment, it is characterized in that:
Education informations technological document play by teacher's PC;
Recorded broadcast main frame recorded video file;
Education informations technological document 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 module.
3., according to claim 1 based on the intelligent tutoring information handling system of recorded broadcast equipment, it is characterized in that:
In instructional video recording process, described video signal source logging modle detects video signal source;
After video signal source logging modle detects that video signal source switches;
Video signal source logging modle sends instruction to recorded broadcast main frame, and education informations log file in teaching carries out recording and the moment point of the state switched with tense marker and switching by recorded broadcast main frame, forms moment point, switching state xml file one to one.
4., according to claim 1 based on the intelligent tutoring information handling system of recorded broadcast equipment, it is characterized in that:
In instructional video recording process, the click event of described Powerpoint education informations technological document detection module to computer mouse or keyboard detects;
When having mouse or keyboard generation click event, Powerpoint education informations technological document detection module obtains the heading message of current ppt;
Send instruction to recorded broadcast main frame, the information of recorded broadcast host record moment point and title, form PowerPoint title and moment point xml file one to one.
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| CN201410778219.4A CN104408983B (en) | 2014-12-15 | 2014-12-15 | Intelligent tutoring information processing system based on recorded broadcast equipment |
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