CN107247732A - Exercise matching process, device and a kind of recording and broadcasting system of a kind of instructional video - Google Patents
Exercise matching process, device and a kind of recording and broadcasting system of a kind of instructional video Download PDFInfo
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Abstract
The embodiment of the invention discloses a kind of exercise matching process of instructional video, the screening difficulty for solving artificial screening exercise is big and the problem of inefficiency.Present invention method includes：Obtain teaching teaching materials picture current in objective teaching video；Text region is carried out to the title and/or body matter in the teaching teaching materials picture, knowledge point keyword is obtained；The knowledge point keyword is matched with default exam pool Zhong Ge roads exercise, matching degree highest predetermined number road exercise is chosen and is used as target exercise；Set up the corresponding relation of the target exercise and the teaching teaching materials picture so that when the objective teaching video playback is to the teaching teaching materials picture, the target exercise is shown with predetermined manner.The embodiment of the present invention also provides the exercise coalignment and a kind of recording and broadcasting system of a kind of instructional video.
Description
Technical field
The present invention relates to technical field of video processing, more particularly to the exercise matching process of instructional video a kind of, device and
A kind of recording and broadcasting system.
Background technology
In video teaching field, be during or after student gives lessons in teacher generally require out a series of exercise with
Consolidate the knowledge point of student, so as to investigate Grasping level of the student to knowledge point.
At present, the selection of exercise is general by the way of manually pre-processing, and teacher is first determined needed for this video teaching
Knowledge point, then teacher according to these knowledge points the manual screening from exam pool go out correlation exercise, in student viewing instructional video
When, system shows these exercises that teacher pre-sets.
However, the mode of this artificial screening exercise is, it is necessary to which teacher filters out and knowledge point from a large amount of exercises of exam pool
Corresponding exercise so that the screening difficulty of exercise is big, and inefficiency.
The content of the invention
, can the embodiments of the invention provide a kind of exercise matching process of instructional video, device and a kind of recording and broadcasting system
The screening difficulty of exercise is reduced, the screening efficiency of exercise is improved, and improve the teaching efficiency of video teaching.
A kind of exercise matching process of instructional video provided in an embodiment of the present invention, including：
Obtain teaching teaching materials picture current in objective teaching video；
Text region is carried out to the title and/or body matter in the teaching teaching materials picture, knowledge point keyword is obtained；
The knowledge point keyword is matched with default exam pool Zhong Ge roads exercise, matching degree highest predetermined number is chosen
Road exercise is used as target exercise；
Set up the corresponding relation of the target exercise and the teaching teaching materials picture so that when the objective teaching video playback is arrived
During the teaching teaching materials picture, the target exercise is shown with predetermined manner.
Alternatively, matched by the knowledge point keyword with default exam pool Zhong Ge roads exercise, choose matching degree
Before highest predetermined number road exercise is as target exercise, in addition to：
The knowledge point of the knowledge point keyword of the current teaching teaching materials picture of detection and upper one teaching teaching materials picture is crucial
Whether word is identical；
If testing result is identical, waits the objective teaching video to switch to next teaching teaching materials picture, then perform
It is described obtain objective teaching video in teaching teaching materials picture the step of；
If testing result is performed the knowledge point keyword and the progress of default exam pool Zhong Ge roads exercise to differ
Match somebody with somebody, choose the step of matching degree highest predetermined number road exercise is as target exercise.
Alternatively, waiting the objective teaching video to switch to next teaching teaching materials picture includes：
Monitor the teaching materials picture switching signal of the objective teaching video；
If listening to the teaching materials picture switching signal, it is determined that the objective teaching video switches to next teaching teaching materials and drawn
Face；
Or
Obtain the next frame teaching materials picture of the objective teaching video；
The picture obtained using frame differential method between the next frame teaching materials picture and the current teaching teaching materials picture is poor
Different information；
Judge the picture different information whether within default difference allowed band；
If the picture different information is within the scope of default signal difference, returns and perform the acquisition objective teaching
The step of next frame teaching materials picture of video；
If the picture different information is not within the scope of default signal difference, it is determined that the objective teaching video is switched to
Next teaching teaching materials picture.
Alternatively, the knowledge point keyword includes key word in title and/or text keyword；
The title and/or body matter in the teaching teaching materials picture carries out Text region, obtains knowledge point keyword
Including：
Text region is carried out to the title in the teaching teaching materials picture, key word in title is obtained；
And/or
Text region is carried out to the body matter in the teaching teaching materials picture, body text information is obtained；
Text keyword is extracted from the body text information according to default keyword-extraction rules.
Alternatively, the knowledge point keyword includes key word in title and text keyword；
The knowledge point keyword is matched with default exam pool Zhong Ge roads exercise, matching degree highest predetermined number is chosen
Road exercise includes as target exercise：
The text keyword is matched with default exam pool Zhong Ge roads exercise, matching degree the first quantity of highest road is chosen
Exercise；
The key word in title is matched with default exam pool Zhong Ge roads exercise, matching degree the second quantity of highest road is chosen
Exercise, the second quantity road exercise and the first quantity road exercise are different；
The quantity road of history frequency of usage highest the 3rd in the first quantity road exercise and the second quantity road exercise is practised
Topic is defined as the target exercise, and the 3rd quantity is less than or equal to first quantity and the second quantity sum.
A kind of exercise coalignment of instructional video provided in an embodiment of the present invention, including：
Teaching materials picture acquisition module, for obtaining teaching teaching materials picture current in objective teaching video；
Keyword recognition module, for carrying out Text region to the title and/or body matter in the teaching teaching materials picture, is obtained
To knowledge point keyword；
Exercise matching module, for the knowledge point keyword to be matched with default exam pool Zhong Ge roads exercise, selection
Target exercise is used as with degree highest predetermined number road exercise；
Exercise teaching materials respective modules, the corresponding relation for setting up the target exercise and the teaching teaching materials picture so that when
When the objective teaching video playback is to the teaching teaching materials picture, the target exercise is shown with predetermined manner.
Alternatively, the exercise coalignment of the instructional video also includes：
Keyword search module, the knowledge point keyword of the teaching teaching materials picture current for detecting is said with a upper teaching
Whether the knowledge point keyword of adopted picture is identical；
First trigger module, if the testing result for the keyword search module is yes, waits the objective teaching to regard
Frequency switches to next teaching teaching materials picture, then performs the step of the teaching teaching materials picture in the acquisition objective teaching video
Suddenly；
Second trigger module, if the testing result for the keyword search module is no, performs and closes the knowledge point
Key word is matched with default exam pool Zhong Ge roads exercise, is chosen matching degree highest predetermined number road exercise and is used as target exercise
The step of.
Alternatively, first trigger module includes：
Switching signal monitoring unit, the teaching materials picture switching signal for monitoring the objective teaching video；
First determining unit, if listening to the teaching materials picture switching signal for the switching signal monitoring unit, it is determined that
The objective teaching video switches to next teaching teaching materials picture；
Or
Next frame picture acquiring unit, the next frame teaching materials picture for obtaining the objective teaching video；
Different information acquiring unit, for obtaining the next frame teaching materials picture and the current teaching using frame differential method
Picture different information between teaching materials picture；
Different information judging unit, for judging the picture different information whether within default difference allowed band；
Trigger element is returned, if the judged result for the different information judging unit is yes, triggering is returned to described next
Frame picture acquiring unit；
Second determining unit, if the judged result for the different information judging unit is no, it is determined that the objective teaching
Video switches to next teaching teaching materials picture.
Alternatively, the knowledge point keyword includes key word in title and/or text keyword；
The keyword recognition module includes：
Key word in title recognition unit, for carrying out Text region to the title in the teaching teaching materials picture, obtains title pass
Key word；
And/or
Body text recognition unit, for carrying out Text region to the body matter in the teaching teaching materials picture, obtains text
Text message；
Text keyword extraction unit, for being extracted just from the body text information according to default keyword-extraction rules
Literary keyword.
A kind of recording and broadcasting system provided in an embodiment of the present invention, includes the exercise coalignment of above-mentioned instructional video.
As can be seen from the above technical solutions, the embodiment of the present invention has advantages below：
In the embodiment of the present invention, first, teaching teaching materials picture current in objective teaching video is obtained；Then, to the teaching
Title and/or body matter in teaching materials picture carry out Text region, obtain knowledge point keyword；In addition, by the knowledge point
Keyword is matched with default exam pool Zhong Ge roads exercise, is chosen matching degree highest predetermined number road exercise and is practised as target
Topic；Finally, the corresponding relation of the target exercise and the teaching teaching materials picture is set up so that when the objective teaching video is broadcast
When being put into the teaching teaching materials picture, the target exercise is shown with predetermined manner.So, this programme can be automatically according to current
Teaching teaching materials picture determine knowledge point keyword, matching degree highest exercise is then filtered out from exam pool, not only significantly
The screening difficulty of exercise is reduced, the screening efficiency of exercise is improved, and sets up pair of exercise and teaching teaching materials picture automatically
It should be related to, these exercises can be shown with predetermined manner, helped when objective teaching video playback is to the teaching teaching materials picture
Student consolidates correlated knowledge point, improves the teaching efficiency of video teaching.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
In required for the accompanying drawing that uses be briefly described, it should be apparent that, drawings in the following description are only some of the present invention
Embodiment, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these
Accompanying drawing obtains other accompanying drawings.
Fig. 1 is a kind of exercise matching process one embodiment flow chart of instructional video in the embodiment of the present invention；
Fig. 2 is a kind of stream of the exercise matching process step 103 of instructional video in the embodiment of the present invention under an application scenarios
Journey schematic diagram；
Fig. 3 is that a kind of exercise matching process of instructional video in the embodiment of the present invention performs step 103 under an application scenarios
Schematic flow sheet before；
Fig. 4 is that a kind of exercise matching process of instructional video in the embodiment of the present invention is used to determine whether objective teaching video has been cut
Shift to the schematic flow sheet of the mode two of next teaching teaching materials picture；
Fig. 5 is a kind of exercise coalignment one embodiment structure chart of instructional video in the embodiment of the present invention.
Embodiment
The embodiments of the invention provide a kind of exercise matching process of instructional video, device and a kind of recording and broadcasting system, it is used for
Solve artificial screening exercise screening difficulty is big and the problem of inefficiency.
To enable goal of the invention, feature, the advantage of the present invention more obvious and understandable, below in conjunction with the present invention
Accompanying drawing in embodiment, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that disclosed below
Embodiment be only a part of embodiment of the invention, and not all embodiment.Based on the embodiment in the present invention, this area
All other embodiment that those of ordinary skill is obtained under the premise of creative work is not made, belongs to protection of the present invention
Scope.
Referring to Fig. 1, a kind of exercise matching process one embodiment of instructional video includes in the embodiment of the present invention：
101st, teaching teaching materials picture current in objective teaching video is obtained；
In the present embodiment, above-mentioned objective teaching video can be the religion just in live instructional video or recorded broadcast
Video is learned, the instructional video in recording is can also be.It is understood that the exercise matching process of the application can apply to respectively
Instructional video under kind of scene, if for example, applied to just in live instructional video, can be real-time using the exercise matching way
Filter out the exercise related to knowledge point；If applied to the instructional video in recording, using the exercise matching way can be with one
Instructional video is recorded on side, while setting the exercise of correlation for the instructional video in recording, is finished so as to be recorded when instructional video
Afterwards, the corresponding exercise in knowledge point is also provided with finishing in the instructional video.
It is understood that when recording and broadcasting system plays objective teaching video, teacher's feature can be shown on recording and broadcasting system
Picture, student's close up view, teacher's panorama, student's panorama, teaching teaching materials picture etc..Above-mentioned " current teaching
Teaching materials picture " can be that teacher currently teaches the corresponding teaching materials picture of content on the objective teaching video, the teaching teaching materials picture
The teaching teaching materials picture that can showing or not show.In recording and broadcasting system, due to current display picture can be controlled to exist
Switch in above-mentioned 5 pictures, such as current display picture is teacher's panorama, although now current display picture is not teaching
Teaching materials picture, but actually current teaching teaching materials picture just plays on the backstage of the recording and broadcasting system, if by current display picture
Teaching teaching materials picture is switched to, the teaching teaching materials picture just played on the recording and broadcasting system backstage then now is put into foreground shows.
Therefore, above-mentioned " current teaching teaching materials picture " differ the picture for being set to and showing, it is also possible to be just backstage play
, with the teaching materials picture of objective teaching audio video synchronization.
In addition, in general, the page of teaching teaching materials picture one teaching materials of correspondence.For example in PPT teaching materials, one page
PPT is then a teaching teaching materials picture.Because objective teaching video is made up of frame picture, therefore a teaching teaching materials picture
Often correspond to the multiframe picture on objective teaching video.If for example, teacher records altogether when explaining some teaching teaching materials picture
The video of 10 minutes, then this teaching teaching materials picture is with all frame pictures of this 10 minutes videos corresponding.
102nd, Text region is carried out to the title and/or body matter in the teaching teaching materials picture, obtains knowledge point pass
Key word；
It is understood that the knowledge point in a teaching teaching materials, is typically recorded on title or body matter.Therefore, may be used
To carry out Text region to the title and/or body matter in the teaching teaching materials picture, knowledge point keyword is obtained.Specifically
Ground, can use OCR（Optical Character Recognition, optical character identification）Character recognition method is recognized
Word in picture, so as to obtain knowledge point keyword.
Further, the knowledge point keyword can include key word in title and/or text keyword, and step 102 can
To specifically include：Text region is carried out to the title in the teaching teaching materials picture, key word in title is obtained；And/or, to described
Body matter in teaching teaching materials picture carries out Text region, obtains body text information；Advised according to default keyword extraction
Text keyword is then extracted from the body text information.It is understood that because the word on title is general more smart
Letter and summary, therefore the title text extracted can be directly as key word in title.Compared with title, the word of body matter
It is more, and content is more detailed, so that text keyword can just be obtained by needing to extract body text.Further
Ground, the keyword-extraction rules can regard the several words of word frequency highest in body text information as keyword.That is,
To after body text information, the word frequency of each character/word in body text information is calculated, word frequency highest is then chosen several
Character/word is used as the text keyword.It should be noted that the keyword-extraction rules can be carried out according to actual use situation
Specific setting, the present embodiment is not construed as limiting to this.
103rd, the knowledge point keyword is matched with default exam pool Zhong Ge roads exercise, chooses matching degree highest
Predetermined number road exercise is used as target exercise；
In the present embodiment, after knowledge point keyword is obtained, can by the knowledge point keyword with it is each in default exam pool
Road exercise is matched, and obtains the matching degree of each road exercise, then chooses a few road exercise conducts of wherein matching degree highest
Target exercise.
Further, the content described in above-mentioned steps 102 is accepted, when the knowledge point keyword includes title key
When word and text keyword, as shown in Fig. 2 step 103 can include：
201st, the text keyword is matched with default exam pool Zhong Ge roads exercise, chooses matching degree highest first and count
Measure road exercise；
202nd, the key word in title is matched with default exam pool Zhong Ge roads exercise, chooses matching degree highest second and count
Road exercise is measured, the second quantity road exercise and the first quantity road exercise are different；
203rd, by the quantity of history frequency of usage highest the 3rd in the first quantity road exercise and the second quantity road exercise
Road exercise is defined as the target exercise, the 3rd quantity be less than or equal to first quantity and second quantity it
With.
In the present embodiment, different matching process can be used for different knowledge point keywords.Specifically, it can adopt
With similarity mode algorithm or Keyword-method-arit hmetic.
For step 201, during for text keyword, Keyword-method-arit hmetic can be used by text keyword and each road
Exercise is matched, and chooses wherein the first quantity of matching degree highest road exercise, it is assumed that be N1 roads exercise.Wherein it is possible to use
Lucene（A kind of full-text search engine increased income）Searching for text content obtains text keyword respectively, and retrieves each topic
Keyword in title is obtained, the keyword in title of text keyword and each topic is then subjected to keyword match, so as to calculate
Obtain the matching degree of each topic.
For step 202, during for key word in title, similarity mode algorithm can be used by key word in title and each road
Exercise is matched, and chooses wherein the second quantity of matching degree highest road exercise, it is assumed that be N2 roads exercise.It is understood that
In order to avoid there is the exercise repeated in N2 roads exercise and N1 roads exercise, when performing step 202, it can be arranged in advance from exam pool
Except the N1 roads exercise chosen in step 201 so that the N2 roads exercise finally given and N1 roads exercise are different.
For step 203, the exam pool records the frequency of usage of each road exercise during use in the present embodiment, because
This, after N1 roads exercise and N2 roads exercise is got, can therefrom choose history frequency of usage highest N3 road exercise conducts
Target exercise, wherein N3≤N1+N2.
It is understood that by above-mentioned steps 201 ~ 203, can take into account in the teaching teaching materials picture in title and text
The knowledge point of appearance, can not only to select the exercise come and link closely title and body matter, and exercise is more classical and has
Effect（In general, the frequency of usage of exercise is higher, represents more important to the knowledge point corresponding to exercise）.
During video teaching, when teacher explains some or some knowledge points, generally require using more than one page
PPT, or even several pages, the PPT teaching materials of page tens are explained, namely in instructional video, it is likely that it is continuous more than two
The identical during knowledge point that teaching teaching materials picture is included.And for these knowledge point identicals teaching teaching materials pictures, it is used
Identical target exercise is used as the exercise for consolidating knowledge point.Therefore, further, before step 103, as shown in figure 3,
The exercise matching process can also include：
301st, the knowledge point of the knowledge point keyword and upper one teaching teaching materials picture of the current teaching teaching materials picture is detected
Whether keyword is identical, if so, step 302 is then performed, if it is not, then performing step 103；
302nd, wait the objective teaching video to switch to next teaching teaching materials picture, then perform step 101；
For step 301 ~ 302, it is to be understood that, can when whether both knowledge point keywords of detection are identical in step 301
With completely the same without the keyword for being strict with both, when the difference between both knowledge point keywords is in tolerance interval
When interior, then it is considered that both knowledge point keywords are identical.If testing result is identical, then it represents that current teaching teaching materials picture
Knowledge point with upper one teaching teaching materials picture knowledge point it is identical, both can use identical target exercise, therefore need not
Perform step 103 and choose new target exercise again.At this point it is possible to wait objective teaching video to switch to next teaching teaching materials
Picture, is then back to execution step 101.If conversely, testing result is to differ, then it represents that the knowledge of current teaching teaching materials picture
The knowledge point of point and upper one teaching teaching materials picture is differed, and both can not use identical target exercise, so as to perform step
103, new target exercise is chosen according to the corresponding knowledge point keyword of current teaching teaching materials picture again.
For step 302, further, it can determine whether objective teaching video has been cut by following two modes
Shift to next teaching teaching materials picture：
Mode one：Monitor the teaching materials picture switching signal of the objective teaching video；If listening to the teaching materials picture switching letter
Number, it is determined that the objective teaching video switches to next teaching teaching materials picture.It is understood that the teaching materials picture switches
Signal can refer in recording and broadcasting system video pictures from teacher's close up view, student's close up view, teacher's panorama or student
Panorama switches to the switching signal of teaching teaching materials picture or referred to by teaching materials（MS）The PPT page numbers that interface is obtained
Switching signal.Therefore, listen to teaching materials picture switching signal, then represent objective teaching video have switched to it is next teaching say
Adopted picture.
Mode two：As shown in figure 4, comprising the following steps：
401st, the next frame teaching materials picture of the objective teaching video is obtained；
402nd, the picture between the next frame teaching materials picture and the current teaching teaching materials picture is obtained using frame differential method
Face different information；
403rd, the picture different information is judged whether within default difference allowed band, and step is performed if so, then returning
401, if it is not, then performing step 404；
404th, determine that the objective teaching video switches to next teaching teaching materials picture.
For step 401, the next frame teaching materials picture refers to the next frame picture for being shown as teaching materials picture.Due to target
Instructional video is made up of continuous frame picture, if the picture that shows of the next frame of objective teaching video not teaching materials picture,
It must not believe that the picture that the next frame is shown is the next frame teaching materials picture, said until the objective teaching video is shown next time
During adopted picture, this shows that teaching materials picture is considered as just the next frame teaching materials picture next time.
For step 402 and 403, it is to be understood that can get next frame teaching materials picture by frame differential method
With the picture different information between current teaching teaching materials picture, in general, if both belong to same one page teaching teaching materials, its
Picture different information should be within default difference allowed band, namely in tolerance interval.If conversely, between the two
Picture different information is not within difference allowed band, then it represents that the next frame teaching materials picture and current teaching teaching materials picture are not
Belong to same one page teaching teaching materials, thus may determine that the objective teaching video has switched to next teaching teaching materials picture.
It is understood that aforesaid way one and mode two may be used alone, can also be used in combination, the present embodiment is not
Make specific limit.
For above-mentioned steps 103, for ease of understanding, illustrated below by an application scenarios：
Under an application scenarios, system obtains and analyzes the content in the picture and picture of current teaching materials, its teaching materials mark
Entitled " Yunnan geographical ", subtitle has " Yunnan population, climate of Yunnan " etc., and the detailed body matter under each title, bag
Include " landforms, state, city " etc. keyword.And then, when carrying out exercise matching screening, title and detailed text can be used respectively
Content finds out totally ten road exercise related to Yunnan geographical, population, weather etc. according to matching algorithm, and according to this ten roads exercise
The frequency filter out " how many 2. Yunnan Province of the population in 1. Yunnan have how many minority Ming Zu 3. Yunnan Province how many,
State, the climatic characteristic in the Yunnan of city 4. are what kind of 5. please say the geomorphologic characteristics in Yunnan " this five roads exercise is as target exercise.
104th, the corresponding relation of the target exercise and the teaching teaching materials picture is set up so that when the objective teaching is regarded
When frequency is played to the teaching teaching materials picture, the target exercise is shown with predetermined manner.
In the present embodiment, after target exercise is determined, it is known that these target exercises and current teaching teaching materials picture
Knowledge point is corresponding, therefore can set up the corresponding relation of the target exercise and the teaching teaching materials picture so that work as institute
When stating objective teaching video playback to the teaching teaching materials picture, the target exercise is shown with predetermined manner.
Further, for described in the above, when next teaching teaching materials picture and current teaching teaching materials are drawn
When the knowledge point in face is identical, next teaching teaching materials picture can equally use these target exercises, therefore can also advise institute
State the corresponding relation of target exercise and next teaching teaching materials picture.
It should be noted that above-mentioned predetermined manner can show that these targets are practised on specific terminal display screen
Topic, such as each student configures a tablet personal computer, and these target exercises are shown on the tablet personal computer of student；Or can be
These target exercises are shown in split screen region on the giant-screen of recording and broadcasting system.In this regard, the present embodiment is not especially limited.
As shown in the above, in the present embodiment instructional video exercise matching process can with Direct Analysis instructional video,
The knowledge point information in instructional video is recognized, so as to filter out habit according to these knowledge point information intellectualities from exam pool
Topic, reduces artificial judgment and operation, and reduce the difficulty that the artificial selection for topic judges.
It should be understood that the size of the sequence number of each step is not meant to the priority of execution sequence, each process in above-described embodiment
Execution sequence should determine that the implementation process without tackling the embodiment of the present invention constitutes any limit with its function and internal logic
It is fixed.
A kind of exercise matching process of instructional video is essentially described above, a kind of exercise of instructional video will be matched fill below
Put and be described in detail.
Fig. 5 shows a kind of exercise coalignment one embodiment structure chart of instructional video in the embodiment of the present invention.
In the present embodiment, a kind of exercise coalignment of instructional video includes：
Teaching materials picture acquisition module 501, for obtaining teaching teaching materials picture current in objective teaching video；
Keyword recognition module 502, for carrying out word knowledge to the title and/or body matter in the teaching teaching materials picture
Not, knowledge point keyword is obtained；
Exercise matching module 503, for the knowledge point keyword to be matched with default exam pool Zhong Ge roads exercise, chooses
Matching degree highest predetermined number road exercise is used as target exercise；
Exercise teaching materials respective modules 504, the corresponding relation for setting up the target exercise and the teaching teaching materials picture so that
When the objective teaching video playback is to the teaching teaching materials picture, the target exercise is shown with predetermined manner.
Further, the exercise coalignment of the instructional video can also include：
Keyword search module, the knowledge point keyword of the teaching teaching materials picture current for detecting is said with a upper teaching
Whether the knowledge point keyword of adopted picture is identical；
First trigger module, if the testing result for the keyword search module is yes, waits the objective teaching to regard
Frequency switches to next teaching teaching materials picture, then performs the step of the teaching teaching materials picture in the acquisition objective teaching video
Suddenly；
Second trigger module, if the testing result for the keyword search module is no, performs and closes the knowledge point
Key word is matched with default exam pool Zhong Ge roads exercise, is chosen matching degree highest predetermined number road exercise and is used as target exercise
The step of.
Further, first trigger module can include：
Switching signal monitoring unit, the teaching materials picture switching signal for monitoring the objective teaching video；
First determining unit, if listening to the teaching materials picture switching signal for the switching signal monitoring unit, it is determined that
The objective teaching video switches to next teaching teaching materials picture；
Or
Next frame picture acquiring unit, the next frame teaching materials picture for obtaining the objective teaching video；
Different information acquiring unit, for obtaining the next frame teaching materials picture and the current teaching using frame differential method
Picture different information between teaching materials picture；
Different information judging unit, for judging the picture different information whether within default difference allowed band；
Trigger element is returned, if the judged result for the different information judging unit is yes, triggering is returned to described next
Frame picture acquiring unit；
Second determining unit, if the judged result for the different information judging unit is no, it is determined that the objective teaching
Video switches to next teaching teaching materials picture.
Further, the knowledge point keyword can include key word in title and/or text keyword；
The keyword recognition module can include：
Key word in title recognition unit, for carrying out Text region to the title in the teaching teaching materials picture, obtains title pass
Key word；
And/or
Body text recognition unit, for carrying out Text region to the body matter in the teaching teaching materials picture, obtains text
Text message；
Text keyword extraction unit, for being extracted just from the body text information according to default keyword-extraction rules
Literary keyword.
Further, the knowledge point keyword can include key word in title and text keyword；
The exercise matching module can include：
First exercise chooses unit, for the text keyword to be matched with default exam pool Zhong Ge roads exercise, chooses
The first quantity of matching degree highest road exercise；
Second exercise chooses unit, for the key word in title to be matched with default exam pool Zhong Ge roads exercise, chooses
The second quantity of matching degree highest road exercise, the second quantity road exercise and the first quantity road exercise are different；
Target exercise chooses unit, for history in the first quantity road exercise and the second quantity road exercise to be used into frequency
The secondary quantity road exercise of highest the 3rd is defined as the target exercise, the 3rd quantity be less than or equal to first quantity and
The second quantity sum.
The embodiment of the present invention also provides a kind of recording and broadcasting system, and its any one teaching for including described in Fig. 5 correspondence embodiments is regarded
The exercise coalignment of frequency.
It is apparent to those skilled in the art that, for convenience and simplicity of description, the system of foregoing description, device
With the specific work process of unit, the corresponding process in preceding method embodiment is may be referred to, be will not be repeated here.
In the above-described embodiments, the description to each embodiment all emphasizes particularly on different fields, without detailed description or note in some embodiment
The part of load, may refer to the associated description of other embodiments.
Those of ordinary skill in the art are it is to be appreciated that each embodiment described with reference to the embodiments described herein
Module, unit and/or method and step, can be realized with the combination of electronic hardware or computer software and electronic hardware.This
A little functions are performed with hardware or software mode actually, depending on the application-specific and design constraint of technical scheme.Specially
Industry technical staff can realize described function to each specific application using distinct methods, but this realization is not
It is considered as beyond the scope of this invention.
In several embodiments provided herein, it should be understood that disclosed system, apparatus and method can be with
Realize by another way.For example, device embodiment described above is only schematical, for example, the unit
Divide, only a kind of division of logic function there can be other dividing mode when actually realizing, such as multiple units or component
Another system can be combined or be desirably integrated into, or some features can be ignored, or do not perform.It is another, it is shown or
The coupling each other discussed or direct-coupling or communication connection can be the indirect couplings of device or unit by some interfaces
Close or communicate to connect, can be electrical, machinery or other forms.
The unit illustrated as separating component can be or may not be it is physically separate, it is aobvious as unit
The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in each embodiment of the invention can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units it is integrated in a unit.Above-mentioned integrated list
Member 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 the integrated unit is realized using in the form of SFU software functional unit and as independent production marketing or used
When, it can be stored in a computer read/write memory medium.Understood based on such, technical scheme is substantially
The part contributed in other words to prior art or all or part of the technical scheme can be in the form of software products
Embody, the computer software product is stored in a storage medium, including some instructions are to cause a computer
Equipment（Can be personal computer, server, or network equipment etc.）Perform the complete of each embodiment methods described of the invention
Portion or part steps.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage（ROM, Read-Only
Memory）, random access memory（RAM, Random Access Memory）, magnetic disc or CD etc. are various can store journey
The medium of sequence code.
Described above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to before
Embodiment is stated the present invention is described in detail, it will be understood by those within the art that：It still can be to preceding
State the technical scheme described in each embodiment to modify, or equivalent substitution is carried out to which part technical characteristic；And these
Modification is replaced, and the essence of appropriate technical solution is departed from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a kind of exercise matching process of instructional video, it is characterised in that including：
Obtain teaching teaching materials picture current in objective teaching video；
Text region is carried out to the title and/or body matter in the teaching teaching materials picture, knowledge point keyword is obtained；
The knowledge point keyword is matched with default exam pool Zhong Ge roads exercise, matching degree highest predetermined number is chosen
Road exercise is used as target exercise；
Set up the corresponding relation of the target exercise and the teaching teaching materials picture so that when the objective teaching video playback is arrived
During the teaching teaching materials picture, the target exercise is shown with predetermined manner.
2. the exercise matching process of instructional video according to claim 1, it is characterised in that the knowledge point is crucial
Word is matched with default exam pool Zhong Ge roads exercise, choose matching degree highest predetermined number road exercise as target exercise it
Before, in addition to：
The knowledge point of the knowledge point keyword of the current teaching teaching materials picture of detection and upper one teaching teaching materials picture is crucial
Whether word is identical；
If testing result is identical, waits the objective teaching video to switch to next teaching teaching materials picture, then perform
It is described obtain objective teaching video in teaching teaching materials picture the step of；
If testing result is performed the knowledge point keyword and the progress of default exam pool Zhong Ge roads exercise to differ
Match somebody with somebody, choose the step of matching degree highest predetermined number road exercise is as target exercise.
3. the exercise matching process of instructional video according to claim 2, it is characterised in that wait the objective teaching to regard
Frequency, which switches to next teaching teaching materials picture, to be included：
Monitor the teaching materials picture switching signal of the objective teaching video；
If listening to the teaching materials picture switching signal, it is determined that the objective teaching video switches to next teaching teaching materials and drawn
Face；
Or
Obtain the next frame teaching materials picture of the objective teaching video；
The picture obtained using frame differential method between the next frame teaching materials picture and the current teaching teaching materials picture is poor
Different information；
Judge the picture different information whether within default difference allowed band；
If the picture different information is within the scope of default signal difference, returns and perform the acquisition objective teaching
The step of next frame teaching materials picture of video；
If the picture different information is not within the scope of default signal difference, it is determined that the objective teaching video is switched to
Next teaching teaching materials picture.
4. the exercise matching process of instructional video according to any one of claim 1 to 3, it is characterised in that described to know
Knowing point keyword includes key word in title and/or text keyword；
The title and/or body matter in the teaching teaching materials picture carries out Text region, obtains knowledge point keyword
Including：
Text region is carried out to the title in the teaching teaching materials picture, key word in title is obtained；
And/or
Text region is carried out to the body matter in the teaching teaching materials picture, body text information is obtained；
Text keyword is extracted from the body text information according to default keyword-extraction rules.
5. the exercise matching process of instructional video according to claim 4, it is characterised in that the knowledge point keyword bag
Include key word in title and text keyword；
The knowledge point keyword is matched with default exam pool Zhong Ge roads exercise, matching degree highest predetermined number is chosen
Road exercise includes as target exercise：
The text keyword is matched with default exam pool Zhong Ge roads exercise, matching degree the first quantity of highest road is chosen
Exercise；
The key word in title is matched with default exam pool Zhong Ge roads exercise, matching degree the second quantity of highest road is chosen
Exercise, the second quantity road exercise and the first quantity road exercise are different；
The quantity road of history frequency of usage highest the 3rd in the first quantity road exercise and the second quantity road exercise is practised
Topic is defined as the target exercise, and the 3rd quantity is less than or equal to first quantity and the second quantity sum.
6. a kind of exercise coalignment of instructional video, it is characterised in that including：
Teaching materials picture acquisition module, for obtaining teaching teaching materials picture current in objective teaching video；
Keyword recognition module, for carrying out Text region to the title and/or body matter in the teaching teaching materials picture, is obtained
To knowledge point keyword；
Exercise matching module, for the knowledge point keyword to be matched with default exam pool Zhong Ge roads exercise, selection
Target exercise is used as with degree highest predetermined number road exercise；
Exercise teaching materials respective modules, the corresponding relation for setting up the target exercise and the teaching teaching materials picture so that when
When the objective teaching video playback is to the teaching teaching materials picture, the target exercise is shown with predetermined manner.
7. the exercise coalignment of instructional video according to claim 6, it is characterised in that the exercise of the instructional video
Coalignment also includes：
Keyword search module, the knowledge point keyword of the teaching teaching materials picture current for detecting is said with a upper teaching
Whether the knowledge point keyword of adopted picture is identical；
First trigger module, if the testing result for the keyword search module is yes, waits the objective teaching to regard
Frequency switches to next teaching teaching materials picture, then performs the step of the teaching teaching materials picture in the acquisition objective teaching video
Suddenly；
Second trigger module, if the testing result for the keyword search module is no, performs and closes the knowledge point
Key word is matched with default exam pool Zhong Ge roads exercise, is chosen matching degree highest predetermined number road exercise and is used as target exercise
The step of.
8. the exercise coalignment of instructional video according to claim 7, it is characterised in that the first trigger module bag
Include：
Switching signal monitoring unit, the teaching materials picture switching signal for monitoring the objective teaching video；
First determining unit, if listening to the teaching materials picture switching signal for the switching signal monitoring unit, it is determined that
The objective teaching video switches to next teaching teaching materials picture；
Or
Next frame picture acquiring unit, the next frame teaching materials picture for obtaining the objective teaching video；
Different information acquiring unit, for obtaining the next frame teaching materials picture and the current teaching using frame differential method
Picture different information between teaching materials picture；
Different information judging unit, for judging the picture different information whether within default difference allowed band；
Trigger element is returned, if the judged result for the different information judging unit is yes, triggering is returned to described next
Frame picture acquiring unit；
Second determining unit, if the judged result for the different information judging unit is no, it is determined that the objective teaching
Video switches to next teaching teaching materials picture.
9. the exercise coalignment of the instructional video according to any one of claim 6 to 8, it is characterised in that described to know
Knowing point keyword includes key word in title and/or text keyword；
The keyword recognition module includes：
Key word in title recognition unit, for carrying out Text region to the title in the teaching teaching materials picture, obtains title pass
Key word；
And/or
Body text recognition unit, for carrying out Text region to the body matter in the teaching teaching materials picture, obtains text
Text message；
Text keyword extraction unit, for being extracted just from the body text information according to default keyword-extraction rules
Literary keyword.
10. a kind of recording and broadcasting system, it is characterised in that include the exercise of the instructional video as any one of claim 6 to 9
Coalignment.
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| CN201710310576.1A CN107247732A (en) | 2017-05-05 | 2017-05-05 | Exercise matching process, device and a kind of recording and broadcasting system of a kind of instructional video |
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