CN111681142B - Education video virtual teaching-based method, system, equipment and storage medium - Google Patents
Education video virtual teaching-based method, system, equipment and storage medium Download PDFInfo
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Abstract
The invention provides a method, a system, equipment and a storage medium based on education video virtual teaching, wherein the method comprises the following steps: the method comprises the steps of collecting historical teaching videos of multiple instructors, obtaining attention parameters of the instructors when watching the historical teaching videos, establishing a teaching video library according to the teaching videos and the associated attention parameters, dividing the historical teaching videos into a plurality of video paragraphs, obtaining course keywords, patterns and texts of a blackboard writing, voice texts of the instructors and the attention parameters according to the video paragraphs, taking at least one video paragraph with the highest attention parameter as a target video, and establishing a virtual classroom, wherein the virtual classroom comprises a blackboard writing background and a virtual instructor, the blackboard writing background is used for displaying patterns and texts of a blackboard writing of the target video, and the virtual instructor reads the voice texts of the instructor.
Description
Technical Field
The invention relates to the field of online education, in particular to a method, a system, equipment and a storage medium based on education video virtual teaching.
Background
With rapid development of information technology, especially from the Internet to the mobile Internet, living, working and learning modes crossing space and time are created, and the knowledge acquisition mode is radically changed. The teaching and learning can be free from the limitation of time, space and place conditions, and the knowledge acquisition channel is flexible and diversified. On-line education, i.e., e-Learning, or distance education, on-line Learning, is generally referred to as a network-based Learning behavior in the current concept, and is similar to the network training concept.
The online education platform, i.e. the online training system, is tool software for implementing online training and online education, and is a remote online education college which can be customized and expanded by applying network technology and software technology. The system helps industries or enterprises to quickly build a proprietary knowledge base system through simple and easy courseware, test question importing and manufacturing functions, and provides functions of training requirement investigation, training target setting, course system design, training plan management, training process monitoring, assessment and the like to help clients to efficiently implement staff training and assessment tasks.
At present, most online education platforms need to employ a large number of teachers, and the teaching level of the teachers is uneven, so that the teaching quality is difficult to ensure.
Even if a learner wants to replace the instructor, the process is complicated, and it is difficult to ensure that the instructor will have obvious progress after the replacement.
In addition, the content teaching level of the instructor for different parts also fluctuates in the teaching process, and the selection of one instructor cannot ensure that the instructor can bring the best teaching experience and teaching quality to the learner in all teaching processes.
Accordingly, the present invention provides a method, system, apparatus, and storage medium for virtual education based on educational video.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a method, a system, equipment and a storage medium based on education video virtual teaching, which overcome the defects of the prior art, can find out the teaching video with the optimal teaching quality from a massive historical teaching video library, simulate the excellent teaching experience of a plurality of teachers, improve the attraction of online virtual courses to students and save the cost of engaging the students.
The embodiment of the invention provides a method based on educational video virtual teaching, which comprises the following steps:
s110, collecting historical teaching videos of a plurality of instructors, obtaining attention parameters of the instructors when watching the historical teaching videos, and establishing a teaching video library according to the teaching videos and the associated attention parameters;
S120, obtaining a plurality of video segments according to the history teaching video;
s130, obtaining course keywords, patterns and texts of an blackboard writing, voice texts of an instructor and attention parameters according to the video paragraphs;
s140, taking at least one video segment with the highest attention parameter as a target video; and
and S150, establishing a virtual classroom, wherein the virtual classroom comprises an blackboard writing background and a virtual instructor, the blackboard writing background is used for displaying the blackboard writing pattern and text of the target video, and the virtual instructor reads the voice text of the instructor.
Preferably, in step S110, the history teaching video of the instructor is photographed in real time by the first mobile terminal, and at the same time, the learner status video when the learner views the history teaching video of the display area of the second mobile terminal is photographed by the second mobile terminal, and the attention parameter is obtained according to the learner status video.
Preferably, in step S120, the historical teaching video in the teaching video library is divided into a plurality of video paragraphs according to a preset duration.
Preferably, in step S130, at least one frame of picture in the video paragraph is subjected to image-text recognition to obtain an blackboard text of the video paragraph; and performing voice recognition on the video paragraph to obtain a voice text of the video paragraph, and obtaining at least one word with the highest occurrence frequency as a course keyword of the video paragraph according to the blackboard writing text and the voice text corresponding to the video paragraph.
Preferably, in step S140, video paragraphs containing the same course keyword are ranked according to the attention parameter.
Preferably, in the step S140, a target video library is established according to a plurality of video segments with highest attention parameters, and one video segment in the target video library is used as a target video;
the step S150 further includes the following steps:
s160, detecting attention parameters of students watching the virtual classroom in real time;
s170, judging whether the attention parameter is lower than a preset threshold value, if yes, executing a step S180, otherwise, returning to a step S160 until the online course is finished;
s180, selecting a video paragraph from the target video library as a target video, and returning to the step S150.
Preferably, in the step S160, the second mobile terminal captures a student status video when the student views the history teaching video of the display area of the second mobile terminal, and obtains the attention parameter according to the student status video.
Preferably, the attention parameter is a ratio of a total viewing duration of the learner looking at the display area of the second mobile terminal to a total duration of the history teaching video when the history teaching video is viewed.
Preferably, the line of sight of the student is predicted according to the pattern of the eyes of the student in the student status video, and when the line of sight passes through the spatial region of the display region, the student is considered to be watching the history teaching video, otherwise, the student does not watch the history teaching video, and the total watching duration is obtained through the duration statistics of watching the history teaching video.
Preferably, the attention parameter is an average value of a ratio of a total viewing duration of all students' eyes watching the display area of the second mobile terminal to a total duration of the history teaching video when the history teaching video is viewed.
The embodiment of the invention also provides a system based on the education video virtual teaching, which is used for realizing the method based on the education video virtual teaching, and comprises the following steps:
the video library module is used for collecting historical teaching videos of a plurality of instructors, obtaining attention parameters of the instructors when watching the historical teaching videos, and establishing a teaching video library according to the teaching videos and the associated attention parameters;
The video paragraph module is used for obtaining a plurality of video paragraphs according to the history teaching video;
the attention parameter module is used for obtaining course keywords, patterns and texts of the blackboard writing, voice texts of the instructor and attention parameters according to the video paragraphs;
the target video module takes at least one video segment with the highest attention parameter as a target video; and
and the virtual classroom module is used for establishing a virtual classroom, wherein the virtual classroom comprises an blackboard writing background and a virtual instructor, the blackboard writing background is used for displaying the blackboard writing pattern and text of the target video, and the virtual instructor reads the voice text of the instructor.
Preferably, the video paragraph module shoots the history teaching video of the instructor in real time through the first mobile terminal, and shoots the student status video when the student views the history teaching video of the display area of the second mobile terminal through the second mobile terminal at the same time, and obtains the attention parameter according to the student status video.
Preferably, the video paragraph module divides the historical teaching video in the teaching video library into a plurality of video paragraphs according to a preset duration; performing image-text recognition on at least one frame of picture in the video paragraph to obtain an blackboard writing text of the video paragraph; and performing voice recognition on the video paragraph to obtain a voice text of the video paragraph, and obtaining at least one word with the highest occurrence frequency as a course keyword of the video paragraph according to the blackboard writing text and the voice text corresponding to the video paragraph.
Preferably, the attention parameter module sorts video paragraphs including the same course keywords according to the attention parameters, establishes a target video library according to a plurality of video paragraphs with highest attention parameters, takes one video paragraph in the target video library as a target video, and detects attention parameters of students watching the virtual classroom in real time; and if the attention parameter is lower than a preset threshold value, selecting a video paragraph in the target video library as a target video, and reestablishing or updating the virtual classroom.
Preferably, the second mobile terminal shoots a student status video when a student views a history teaching video of a display area of the second mobile terminal, and the attention parameter is obtained according to the student status video.
Preferably, the attention parameter is a ratio of total watching duration of the learner watching the display area of the second mobile terminal to total duration of the history teaching video when watching the history teaching video; or alternatively
And the attention parameter is an average value of the ratio of the total watching duration of all students looking at the display area of the second mobile terminal to the total duration of the history teaching video when watching the history teaching video.
Preferably, the line of sight of the student is predicted according to the pattern of the eyes of the student in the student status video, and when the line of sight passes through the spatial region of the display region, the student is considered to be watching the history teaching video, otherwise, the student does not watch the history teaching video, and the total watching duration is obtained through the duration statistics of watching the history teaching video.
The embodiment of the invention also provides a device based on education video virtual teaching, which comprises:
a processor;
a memory having stored therein executable instructions of the processor;
wherein the processor is configured to perform the steps of the educational video virtual education based method described above via execution of the executable instructions.
Embodiments of the present invention also provide a computer-readable storage medium storing a program that, when executed, implements the steps of the educational video virtual teaching-based method described above.
The method, the system, the equipment and the storage medium based on the education video virtual teaching can find the teaching video with the best teaching quality from a huge amount of history teaching video library, simulate the excellent teaching experience of a plurality of teachers in a hall net class, provide the automatic matching optimal teaching mode aiming at each knowledge point for students, feed back and replace other teaching modes according to the real-time state of the students, greatly improve the teaching quality of online courses, improve the attraction of the online virtual courses to the students, and greatly save the cost of the recruitment of the students for an education platform.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings.
Fig. 1 is a first flowchart of the educational video virtual teaching-based method of the present invention.
Fig. 2 is a second flow chart of the educational video virtual teaching-based method of the present invention.
Fig. 3 is a schematic diagram of a first instructor recording a first educational video in the educational video based virtual teaching method of the present invention.
Fig. 4 is a schematic diagram of a learner watching a first education video in real time in the education video virtual teaching-based method of the present invention.
Fig. 5 is a schematic diagram of a second instructor recording educational video based on the educational video virtual teaching method of the present invention.
Fig. 6 is a schematic diagram of a learner watching a second education video in real time in the education video virtual teaching-based method of the present invention.
Fig. 7 is a schematic diagram of a teaching video library established in the educational video virtual teaching-based method of the present invention.
Fig. 8 is a schematic diagram of a virtual classroom established in the educational video based virtual teaching method of the present invention.
Fig. 9 is a schematic diagram of a learner performing an online course in a virtual classroom in the educational video based virtual teaching method of the present invention.
Fig. 10 is a schematic diagram of an online course performed by newly creating a virtual classroom according to a status of a learner in the education video based virtual teaching method of the present invention.
Fig. 11 is a schematic diagram of the architecture of the educational video virtual teaching-based system of the present invention.
Fig. 12 is a schematic structural view of the educational video virtual teaching-based apparatus of the present invention. And
fig. 13 is a schematic structural view of a computer-readable storage medium according to an embodiment of the present invention.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus a repetitive description thereof will be omitted.
Fig. 1 is a first flowchart of the educational video virtual teaching-based method of the present invention. As shown in fig. 1, the first virtual teaching method based on educational video of the present invention comprises the following steps:
s110, collecting historical teaching videos of a plurality of instructors, obtaining attention parameters of the instructors when watching the historical teaching videos, and establishing a teaching video library according to the teaching videos and the associated attention parameters;
S120, dividing a history teaching video in a teaching video library into a plurality of video paragraphs according to preset duration;
s130, obtaining course keywords, patterns and texts of an blackboard writing, voice texts of instructors and attention parameters according to video paragraphs;
s140, sorting video paragraphs containing the same course keywords according to the attention parameters, and taking at least one video paragraph with the highest attention parameter as a target video; and
and S150, establishing a virtual classroom, wherein the virtual classroom comprises an blackboard writing background and a virtual instructor, the blackboard writing background is used for displaying the blackboard writing pattern and text of the target video, and the virtual instructor reads the voice text of the instructor.
According to the invention, the teaching video with the best teaching quality can be found out from a massive historical teaching video library, and the excellent teaching experience of a plurality of teachers can be simulated in one class of net lessons, so that the automatic matching optimal teaching mode aiming at each knowledge point is provided for students, the teaching quality of online lessons is improved, the attraction of online virtual lessons to the students is improved, and the cost of engaging the instructors is also greatly saved for an education platform.
In a preferred embodiment, in step S110, the first mobile terminal is used to capture the history teaching video of the instructor in real time, and the second mobile terminal is used to capture the status video of the instructor when the instructor views the history teaching video of the display area of the second mobile terminal, and the parameter of interest is obtained according to the status video of the instructor, but not limited thereto. The present invention may employ existing or future inventive techniques to detect trainee status, such as: predicting the sight line of a student according to the patterns of eyes of the student in the student status video, and according to the matching relation between the sight line and the space area of the pre-stored display area, when the sight line passes through the space area of the display area, considering that the student is watching the history teaching video at the moment, otherwise, the student is not watching the history teaching video at the moment, and obtaining the total watching duration through the duration statistics of watching the history teaching video, but not limited to the watching duration. It is also possible to provide, for example: the mobile terminal of the Tobii eye tracker detects eye movements of a student and predicts the position of the line of sight falling on the screen. The basic principle of the existing eye tracker is that an image processing technology is utilized, an eye camera capable of locking eyes is used, and the change of the sight line is continuously recorded by taking in infrared rays reflected from the cornea and pupil of the human eye, so that the sight line tracking process of recording and analyzing is achieved, and the description is omitted here.
In a preferred embodiment, in step S120, the preset duration is selected from 10 seconds to 10 minutes, but not limited thereto.
In a preferred embodiment, in step S130, at least one frame of picture in the video paragraph is subjected to image-text recognition to obtain an blackboard writing text of the video paragraph; and performing voice recognition on the video paragraph to obtain a voice text of the video paragraph, and obtaining at least one word with the highest occurrence number according to the blackboard writing text and the voice text corresponding to the video paragraph as a course keyword of the video paragraph, but not limited to the word.
For example: and taking at least one word with the highest occurrence frequency in the blackboard writing text and the voice text as a course keyword of the video paragraph, but not limited to the word. For example: the method comprises the steps that an engine in an blackboard-writing text appears 4 times, a maintenance word appears 3 times, the other words appear 2 times at most, the engine in a voice text appears 8 times, the maintenance word appears 6 times, the other words appear 2 times at most, two words with the highest total frequency in the blackboard-writing text and the voice text are the engine and the maintenance word, and the engine and the maintenance word are taken as two course keywords of the video paragraph.
Or, at least one word with the highest occurrence frequency of both the blackboard writing text and the voice text is used as a course keyword of the video paragraph, but not limited to the word. For example: the "plum white" appears 3 times in the blackboard writing text, the "love" appears 3 times, the other words appear 2 times at most, the "plum white" appears 2 times in the voice text, the "ancient poetry" appears 6 times, the "love" appears 4 times, the other words appear 2 times at most, although the number of times of the "ancient poetry" appears is the most, in this embodiment, the comprehensive and effect of the blackboard writing and the oral dictation of the instructor can be considered more comprehensively, and the "plum white" with the highest appearance times and the blackboard writing text and the voice text is used as the course keyword of the video paragraph.
In a preferred scheme, the attention parameter is a ratio of a total viewing duration of the learner looking at the display area of the second mobile terminal and a total duration of the history teaching video when the history teaching video is viewed, but the attention parameter is not limited to the ratio. For example, in an online lesson with a total duration of 40 minutes, where 30 minutes of the learner are focused on the instructor, the parameter of interest is 30++40=0.75.
In a preferred scheme, the attention parameter is an average value of a ratio of a total viewing duration of all the students looking at the display area of the second mobile terminal to a total duration of the history teaching video when the history teaching video is viewed, but the attention parameter is not limited to the average value. For example, four students are engaged in online courses, and the ratio of the total time of watching to the total time of the historic teaching video is divided into 0.71, 0.72, 0.79 and 0.78, and the attention parameter is equal to (0.71+0.72+0.79+0.78)/(4=0.75).
Fig. 2 is a second flow chart of the educational video virtual teaching-based method of the present invention. As shown in fig. 2, the second virtual teaching method based on educational video of the present invention comprises the steps of:
s110, collecting historical teaching videos of a plurality of instructors, obtaining attention parameters of the instructors when watching the historical teaching videos, and establishing a teaching video library according to the teaching videos and the associated attention parameters;
s120, dividing a history teaching video in a teaching video library into a plurality of video paragraphs according to preset duration;
s130, obtaining course keywords, patterns and texts of an blackboard writing, voice texts of instructors and attention parameters according to video paragraphs;
s140, sorting video segments containing the same course keywords according to the attention parameters, building a target video library according to a plurality of video segments with highest attention parameters, and taking one video segment in the target video library as a target video
And S150, establishing a virtual classroom, wherein the virtual classroom comprises an blackboard writing background and a virtual instructor, the blackboard writing background is used for displaying the blackboard writing pattern and text of the target video, and the virtual instructor reads the voice text of the instructor.
S160, detecting attention parameters of students watching the virtual classroom in real time;
S170, judging whether the attention parameter is lower than a preset threshold value, if yes, executing a step S180, and if not, returning to a step S160 until the online course is ended;
s180, selecting a video paragraph in the target video library as a target video, and returning to the step S150.
The invention can also change other high-quality teaching modes according to the real-time state feedback of the students until finding the teaching mode which is most suitable for the students, thereby greatly improving the teaching quality of online courses, improving the attraction of online virtual courses to the students and greatly saving the cost of engaging the students for an education platform.
In a preferred embodiment, in step S160, the second mobile terminal photographs a status video of the learner when the learner views the history teaching video of the display area of the second mobile terminal, and obtains the attention parameter according to the status video of the learner, but not limited thereto. The method of detecting the parameter of interest is as before and will not be described in detail here.
In a preferred scheme, the attention parameter is a ratio of a total viewing duration of the learner looking at the display area of the second mobile terminal and a total duration of the history teaching video when the history teaching video is viewed, but the attention parameter is not limited to the ratio.
In a preferred scheme, the line of sight of the student is predicted according to the patterns of eyes of the student in the student status video, and according to the matching relation between the line of sight and the space region of the prestored display region, when the line of sight passes through the space region of the display region, the student is considered to be watching the history teaching video at the moment, otherwise, the student does not watch the history teaching video at the moment, and the total watching duration is obtained through the duration statistics of watching the history teaching video, but the method is not limited to the method.
In a preferred scheme, the attention parameter is an average value of a ratio of a total viewing duration of all the students looking at the display area of the second mobile terminal to a total duration of the history teaching video when the history teaching video is viewed, but the attention parameter is not limited to the average value.
The implementation of the invention is illustrated below by means of fig. 3 to 10.
Fig. 3 is a schematic diagram of a first instructor recording a first educational video in the educational video based virtual teaching method of the present invention. As shown in fig. 3, an instructor 11 records an online course through a mobile phone 1 to explain poems of plums, namely, the 'quiet night' in which the image of plums and the poems of quiet night are included in an blackboard-writing part 12.
Fig. 4 is a schematic diagram of a learner watching a first education video in real time in the education video virtual teaching-based method of the present invention. As shown in fig. 4, the learner 21 learns the online course of the instructor 11 in real time through the mobile phone 2, and explains poems of the beggar: in the knight-errant line, the mobile phone 2 monitors eyes of the student 21 in real time, so that the on-line course attention parameters of the sight 22 of the student 21 to the instructor 11 are obtained.
Fig. 5 is a schematic diagram of a second instructor recording educational video based on the educational video virtual teaching method of the present invention. As shown in fig. 5, the instructor 13 records online courses via the mobile phone 1, wherein the board writing part 14 includes poems of the knight-errant.
Fig. 6 is a schematic diagram of a learner watching a second education video in real time in the education video virtual teaching-based method of the present invention. As shown in fig. 6, the learner 21 learns the online course of the learner 13 in real time through the mobile phone 2, and the mobile phone 2 monitors the eyes of the learner 21 in real time, thereby obtaining the attention parameters of the line of sight 22 of the learner 21 to the online course of the learner 13.
Fig. 7 is a schematic diagram of a teaching video library established in the educational video virtual teaching-based method of the present invention. As shown in fig. 7, the historical teaching video in the teaching video library is divided into a plurality of video paragraphs according to a preset duration. Course keywords, patterns and text of the board, voice text of the instructor, and attention parameters are obtained according to the video paragraphs. And sequencing the video segments containing the same course keywords according to the attention parameters, and taking at least one video segment with the highest attention parameter as a target video. In the course of obtaining the history teaching video 4A from the online courses of the instructors 11 in the server 3 by detecting the attention parameters of all the instructors, the course keywords 41 of the history teaching video 4A are "white, the pattern 42 of the board book (pattern of white of plum) and the text 43 (poem of overnight, night, tang Libai, before bed bright moon, doubt, frost on the ground, the first sight, the low head, hometown,"), the voice text 44 "white of the instructor is a great poem … …" in China, and the attention parameter 45 is 0.8. According to the online course of the instructor 13, the history teaching video 4B is obtained, the course keywords 41 of the history teaching video 4B are "Libai", the patterns 42 (none) and the texts 43 of the blackboard writing (the poetry of the knight-errant (Tang Libai) Zhao Ke Hu Ying, wu Goushuang are chiming, silver saddle is white horse, the brancher is a meteoroid, ten steps are killed, the surprise is not left, the coat is removed, the deep hiding and the name are … …), the voice text 44 "Libai is free and free, the swing unbreakable … …" and the attention parameter 45 is 0.78.
Fig. 8 is a schematic diagram of a virtual classroom established in the educational video based virtual teaching method of the present invention. As shown in fig. 8, when an online course about the keyword "liqueur" needs to be performed, the server obtains the first history teaching video 4A and the second history teaching video 4B through ordering the attention parameters, and establishes a target video library together with the history teaching video 4A and the history teaching video 4B, and first uses the history teaching video 4A with the highest attention parameter in the target video library as the target video. A virtual classroom 5A is established based on the history teaching video 4A, the virtual classroom 5A including an blackboard writing background for displaying the pattern and text of the blackboard writing of the history teaching video 4A and a virtual instructor that reads the voice text of the instructor of the history teaching video 4A. The virtual classroom 5A is displayed on the screen of the cell phone 5 and the audio of the voice text of the instructor who reads the history teaching video 4A is played. The virtual instructor may be a virtual character model selected by the learner and including an appearance skin and a voiceprint model, the appearance skin being displayed in the virtual classroom 5A, and the voice text of the instructor of the history teaching video 4A being read through the voiceprint model and played through the mobile phone 5, which will not be described in detail herein.
Fig. 9 is a schematic diagram of a learner performing an online course in a virtual classroom in the educational video based virtual teaching method of the present invention. As shown in fig. 9, the trainee 61 experiences the virtual classroom 5A through the mobile phone 5, and the mobile phone 5 detects whether the line of sight 62 of the eyes of the trainee 61 falls on the screen of the mobile phone 5 through the camera, thereby obtaining that the parameter of interest of the trainee 61 for the virtual classroom 5A is 0.65.
Fig. 10 is a schematic diagram of an online course performed by newly creating a virtual classroom according to a status of a learner in the education video based virtual teaching method of the present invention. As shown in fig. 10, assuming that the preset attention parameter preset threshold is 0.7, which is higher than 0.7, this means that the learner is concentrating on the current course and should continue the virtual classroom; below 0.7 this indicates that the learner is not interested in the current course and may consider changing virtual classrooms. When the attention parameter of the learner 61 for the virtual classroom 5A is 0.65, selecting a history teaching video from the target video library to obtain a history teaching video 4B, and then creating a virtual classroom 5B based on the history teaching video 4B, wherein the virtual classroom 5B comprises an blackboard writing background and a virtual instructor, the blackboard writing background is used for displaying the blackboard writing text of the history teaching video 4B, and the virtual instructor reads the voice text of the instructor of the history teaching video 4B. The virtual classroom 5B is displayed on the screen of the mobile phone 5, and the audio of the voice text of the instructor reading the history teaching video 4B is played, then, the mobile phone 5 continues to detect whether the sight 62 of the eyes of the trainee 61 falls on the screen of the mobile phone 5 through the camera, so that the attention parameter of the trainee 61 to the virtual classroom 5A is 0.8, and the replacement of the virtual classroom is described, so that the attention of the trainee 61 to the online course is obviously improved, and the teaching quality is improved. By means of the method, teaching modes of different instructors can be replaced in a course in progress in a hall so as to match different instructors, and finally, the teaching mode with the best effect on the instructors is found.
Fig. 11 is a schematic diagram of the architecture of the educational video virtual teaching-based system of the present invention. As shown in fig. 11, an embodiment of the present invention further provides a system 5 based on educational video virtual teaching, for implementing the above method based on educational video virtual teaching, where the system 5 based on educational video virtual teaching includes:
the video library module 51 collects historical teaching videos of a plurality of instructors, obtains attention parameters of the instructors when watching the historical teaching videos, and establishes a teaching video library according to the teaching videos and the associated attention parameters;
the video paragraph module 52 divides the history teaching video in the teaching video library into a plurality of video paragraphs according to a preset duration;
the attention parameter module 53 obtains course keywords, board text, phonetic text of the instructor and attention parameters according to the video paragraphs;
the target video module 54 ranks video segments containing the same course keywords according to the attention parameters, and takes at least one video segment with the highest attention parameter as a target video; and
the virtual classroom module 55 creates a virtual classroom including an blackboard writing background for displaying blackboard writing text of the target video and a virtual instructor that speaks the voice text of the instructor.
In a preferred scheme, the history teaching video of the instructor is shot in real time through the first mobile terminal, and meanwhile, the student status video when the student views the history teaching video of the display area of the second mobile terminal is shot through the second mobile terminal, and the attention parameter is obtained according to the student status video.
In a preferred scheme, at least one frame of picture in the video paragraph is subjected to picture-text recognition to obtain an blackboard writing text of the video paragraph; and performing voice recognition on the video paragraph to obtain a voice text of the video paragraph, and obtaining at least one word with the highest occurrence number as a course keyword of the video paragraph according to the blackboard writing text and the voice text corresponding to the video paragraph.
In a preferred scheme, a target video library is established according to a plurality of video segments with highest attention parameters, one video segment in the target video library is used as a target video, and attention parameters of students watching a virtual classroom are detected in real time; and if the relation parameter is lower than the preset threshold, selecting a video paragraph in the target video library as a target video, and reestablishing or updating the virtual classroom.
In a preferred scheme, the second mobile terminal shoots a student status video when a student views a history teaching video of a display area of the second mobile terminal, and the attention parameter is obtained according to the student status video.
In a preferred scheme, the attention parameter is the ratio of the total watching duration of the learner watching the display area of the second mobile terminal to the total duration of the history teaching video when watching the history teaching video; or alternatively
The attention parameter is an average value of the ratio of the total watching duration of all the students looking at the display area of the second mobile terminal to the total duration of the history teaching video when watching the history teaching video.
In a preferred scheme, the sight line of a student is predicted according to the patterns of eyes of the student in the student status video, and according to the matching relation between the sight line and the space area of the pre-stored display area, when the sight line passes through the space area of the display area, the student is considered to be watching the history teaching video at the moment, otherwise, the student is not watching the history teaching video at the moment, and the total watching duration is obtained through the duration statistics of watching the history teaching video.
The education video virtual teaching-based system 5 provided by the invention can find out the teaching video with the best teaching quality from a massive historical teaching video library, simulate the excellent teaching experience of a plurality of teachers in a hall net class, provide the student with an automatic matching optimal teaching mode aiming at each knowledge point, feed back and replace other teaching modes according to the real-time state of the student, greatly improve the teaching quality of online courses, improve the attraction of the online virtual courses to the student, and greatly save the cost of the education platform for the recruiting the teacher.
The embodiment of the invention also provides equipment based on the education video virtual teaching, which comprises a processor. A memory having stored therein executable instructions of a processor. Wherein the processor is configured to perform the steps of the educational video virtual education based method via execution of the executable instructions.
As shown above, the embodiment can find out the teaching video with the best teaching quality from a massive historical teaching video library, simulate the excellent teaching experience of a plurality of teachers in a class network, provide the student with the automatic matching optimal teaching mode aiming at each knowledge point, and replace other teaching modes according to the real-time state feedback of the student, thereby greatly improving the teaching quality of online courses, improving the attraction of online virtual courses to the student, and greatly saving the cost of the recruitment of the teacher for an education platform.
Those skilled in the art will appreciate that the various aspects of the invention may be implemented as a system, method, or program product. Accordingly, aspects of the invention may be embodied in the following forms, namely: an entirely hardware embodiment, an entirely software embodiment (including firmware, micro-code, etc.) or an embodiment combining hardware and software aspects may be referred to herein as a "circuit," module "or" platform.
Fig. 12 is a schematic structural view of the educational video virtual teaching-based apparatus of the present invention. An electronic device 600 according to this embodiment of the invention is described below with reference to fig. 12. The electronic device 600 shown in fig. 12 is merely an example, and should not be construed as limiting the functionality and scope of use of embodiments of the present invention.
As shown in fig. 12, the electronic device 600 is in the form of a general purpose computing device. Components of electronic device 600 may include, but are not limited to: at least one processing unit 610, at least one memory unit 620, a bus 630 connecting the different platform components (including memory unit 620 and processing unit 610), a display unit 640, etc.
Wherein the storage unit stores program code executable by the processing unit 610 such that the processing unit 610 performs the steps according to various exemplary embodiments of the present invention described in the above-described electronic prescription flow processing method section of the present specification. For example, the processing unit 610 may perform the steps as shown in fig. 1.
The storage unit 620 may include readable media in the form of volatile storage units, such as Random Access Memory (RAM) 6201 and/or cache memory unit 6202, and may further include Read Only Memory (ROM) 6203.
The storage unit 620 may also include a program/utility 6204 having a set (at least one) of program modules 6205, such program modules 6205 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment.
Bus 630 may be a local bus representing one or more of several types of bus structures including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or using any of a variety of bus architectures.
The electronic device 600 may also communicate with one or more external devices 700 (e.g., keyboard, pointing device, bluetooth device, etc.), one or more devices that enable a user to interact with the electronic device 600, and/or any device (e.g., router, modem, etc.) that enables the electronic device 600 to communicate with one or more other computing devices. Such communication may occur through an input/output (I/O) interface 650. Also, electronic device 600 may communicate with one or more networks such as a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the Internet, through network adapter 660. The network adapter 660 may communicate with other modules of the electronic device 600 over the bus 630. It should be appreciated that although not shown, other hardware and/or software modules may be used in connection with electronic device 600, including, but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, data backup storage platforms, and the like.
The embodiment of the invention also provides a computer readable storage medium for storing a program, and the steps of the education video virtual teaching-based method are realized when the program is executed. In some possible embodiments, the aspects of the present invention may also be implemented in the form of a program product comprising program code for causing a terminal device to carry out the steps according to the various exemplary embodiments of the invention as described in the electronic prescription stream processing method section of this specification, when the program product is run on the terminal device.
As shown above, the embodiment can find out the teaching video with the best teaching quality from a massive historical teaching video library, simulate the excellent teaching experience of a plurality of teachers in a class network, provide the student with the automatic matching optimal teaching mode aiming at each knowledge point, and replace other teaching modes according to the real-time state feedback of the student, thereby greatly improving the teaching quality of online courses, improving the attraction of online virtual courses to the student, and greatly saving the cost of the recruitment of the teacher for an education platform.
Fig. 13 is a schematic structural view of a computer-readable storage medium of the present invention. Referring to fig. 13, a program product 800 for implementing the above-described method according to an embodiment of the present invention is described, which may employ a portable compact disc read only memory (CD-ROM) and include program code, and may be run on a terminal device, such as a personal computer. However, the program product of the present invention is not limited thereto, and in this document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium can be, for example, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium would include the following: an electrical connection having one or more wires, a portable disk, a hard disk, random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The computer readable storage medium may include a data signal propagated in baseband or as part of a carrier wave, with readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A readable storage medium may also be any readable medium that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a readable storage medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Program code for carrying out operations of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device, partly on a remote computing device, or entirely on the remote computing device or server. In the case of remote computing devices, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., connected via the Internet using an Internet service provider).
In summary, the education video virtual teaching-based method, system, equipment and storage medium can find out the teaching video with the best teaching quality from a huge amount of historical teaching video library, simulate the excellent teaching experience of a plurality of teachers in a hall net class, provide the student with the automatic matching optimal teaching mode aiming at each knowledge point, feed back and replace other teaching modes according to the real-time state of the student, greatly improve the teaching quality of online courses, improve the attraction of the online virtual courses to the student, and greatly save the cost of the recruitment of the teacher for an education platform.
The foregoing is a further detailed description of the invention in connection with the preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.
Claims (11)
1. A method for virtual teaching based on educational video, comprising the steps of:
s110, collecting historical teaching videos of a plurality of instructors, obtaining attention parameters of the instructors when watching the historical teaching videos, and establishing a teaching video library according to the teaching videos and the associated attention parameters;
s120, obtaining a plurality of video segments according to the history teaching video;
s130, obtaining course keywords, patterns and texts of an blackboard writing, voice texts of an instructor and attention parameters according to the video paragraphs;
s140, sorting video paragraphs containing the same course keywords according to the attention parameters, establishing a target video library according to a plurality of video paragraphs with highest attention parameters, and taking one video paragraph in the target video library as a target video; and
S150, establishing a virtual classroom, wherein the virtual classroom comprises an blackboard writing background and a virtual instructor, the blackboard writing background is used for displaying the blackboard writing pattern and text of the target video, and the virtual instructor reads the voice text of the instructor;
s160, detecting attention parameters of students watching the virtual classroom in real time, wherein a second mobile terminal shoots a student status video when the students watch a history teaching video of a display area of the second mobile terminal, and acquires attention parameters according to the student status video, wherein the attention parameters are the ratio of the total watching duration of the students 'eyes watching the display area of the second mobile terminal to the total duration of the history teaching video when watching the history teaching video, or the attention parameters are the average value of the ratio of the total watching duration of all the students' eyes watching the display area of the second mobile terminal to the total duration of the history teaching video when watching the history teaching video;
s170, judging whether the attention parameter is lower than a preset threshold value, if yes, executing a step S180, otherwise, returning to a step S160 until the online course is finished;
s180, selecting a video paragraph from the target video library as a target video, and returning to the step S150.
2. The method for virtual teaching based on educational video according to claim 1, wherein in step S110, the history teaching video of the instructor is photographed in real time by a first mobile terminal, and at the same time, a learner status video when the learner views the history teaching video of the display area of the second mobile terminal is photographed by a second mobile terminal, and attention parameters are obtained according to the learner status video.
3. The method according to claim 1, wherein in step S120, the historical teaching video in the teaching video library is divided into a plurality of video paragraphs according to a preset duration.
4. The method according to claim 3, wherein in the step S130, at least one frame of picture in the video paragraph is subjected to image-text recognition to obtain the blackboard text of the video paragraph; and performing voice recognition on the video paragraph to obtain a voice text of the video paragraph, and obtaining at least one word with the highest occurrence frequency as a course keyword of the video paragraph according to the blackboard writing text and the voice text corresponding to the video paragraph.
5. The educational video virtual teaching-based method according to claim 1, wherein the line of sight of the student is predicted according to the pattern of the eyes of the student in the student status video, and when the line of sight passes through the spatial region of the display region, the student is considered to be watching the history teaching video at the moment, otherwise, the student is not watching the history teaching video at the moment, and the total watching duration is obtained by the duration statistics of watching the history teaching video.
6. A system based on educational video virtual teaching for implementing the method based on educational video virtual teaching of claim 1, comprising: the video library module is used for collecting historical teaching videos of a plurality of instructors, obtaining attention parameters of the instructors when watching the historical teaching videos, and establishing a teaching video library according to the teaching videos and the associated attention parameters;
the video paragraph module is used for obtaining a plurality of video paragraphs according to the history teaching video;
the attention parameter module is used for obtaining course keywords, patterns and texts of the blackboard writing, voice texts of the instructor and attention parameters according to the video paragraphs;
The target video module is used for sequencing video paragraphs containing the same course keywords according to the attention parameters, establishing a target video library according to a plurality of video paragraphs with highest attention parameters, taking one video paragraph in the target video library as a target video, detecting attention parameters of students watching the virtual classroom in real time, selecting one video paragraph as a target video in the target video library when the attention parameters are lower than a preset threshold, reestablishing or updating the virtual classroom, wherein a second mobile terminal shoots a student status video when the students watch the history teaching video of a display area of the second mobile terminal, obtains attention parameters according to the student status video, and the attention parameters are the ratio of the total watching duration of the display area of the second mobile terminal to the total duration of the history teaching video when the students watch the history teaching video, or the attention parameters are the average value of the total watching duration of the second mobile terminal and the total history teaching video; and
and the virtual classroom module is used for establishing a virtual classroom, wherein the virtual classroom comprises an blackboard writing background and a virtual instructor, the blackboard writing background is used for displaying the blackboard writing pattern and text of the target video, and the virtual instructor reads the voice text of the instructor.
7. The educational video virtual teaching-based system of claim 6, wherein said video paragraph module captures the historic teaching video of the instructor in real time through a first mobile terminal, and simultaneously captures a learner status video when the learner views the historic teaching video of the display area of the second mobile terminal through a second mobile terminal, and obtains the attention parameter according to the learner status video.
8. The educational video virtual teaching-based system according to claim 6, wherein the video paragraph module divides the historical teaching video in the teaching video library into a plurality of video paragraphs according to a preset duration; performing image-text recognition on at least one frame of picture in the video paragraph to obtain an blackboard writing text of the video paragraph; and performing voice recognition on the video paragraph to obtain a voice text of the video paragraph, and obtaining at least one word with the highest occurrence frequency as a course keyword of the video paragraph according to the blackboard writing text and the voice text corresponding to the video paragraph.
9. The educational video virtual teaching-based system according to claim 6, wherein the line of sight of the learner is predicted according to the pattern of the eyes of the learner in the learner status video, and when the line of sight passes through the spatial region of the display region, the learner is considered to be watching the history teaching video at the moment, otherwise, the learner does not watch the history teaching video at the moment, and the total watching duration is obtained by counting the duration of watching the history teaching video.
10. An educational video virtual teaching-based apparatus, comprising:
a processor;
a memory having stored therein executable instructions of the processor;
wherein the processor is configured to perform the steps of the educational video virtual teaching-based method of any of claims 1 to 5 via execution of the executable instructions.
11. A computer-readable storage medium storing a program, wherein the program when executed implements the steps of the educational video virtual teaching-based method of any of claims 1 to 5.
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