CN110024015B - Interactive video teaching method and system - Google Patents
Interactive video teaching method and system Download PDFInfo
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- CN110024015B CN110024015B CN201780018371.4A CN201780018371A CN110024015B CN 110024015 B CN110024015 B CN 110024015B CN 201780018371 A CN201780018371 A CN 201780018371A CN 110024015 B CN110024015 B CN 110024015B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B5/00—Electrically-operated educational appliances
- G09B5/08—Electrically-operated educational appliances providing for individual presentation of information to a plurality of student stations
- G09B5/14—Electrically-operated educational appliances providing for individual presentation of information to a plurality of student stations with provision for individual teacher-student communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/845—Structuring of content, e.g. decomposing content into time segments
Abstract
The embodiment of the invention provides an interactive video teaching method and system, and relates to the technical field of Internet of things. The method is specifically implemented by dividing a target teaching video into a plurality of video segments according to semanteme, arranging a trigger node between every two video segments, then feeding back according to an external signal in the course of playing the teaching video, inserting a corresponding interaction process between the segments, monitoring and adjusting the progress of the course, and monitoring the concentration degree of students in real time. The method and the system provide a brand-new online education mode which is low in cost, high in interaction, strong in reproducibility and capable of being upgraded according to needs. The completely new education mode can remarkably alleviate or even completely solve the current situation of serious imbalance of education resource distribution.
Description
Technical Field
The invention relates to the technical field of Internet of things, in particular to an interactive video teaching method and system.
Background
With the popularization of the internet and the entrance of artificial intelligence into the life of the general public, online education begins to be more and more popularized. Currently, the educational industry is clearly divided into online and offline education. Offline education is essentially a labor intensive industry, heavily relying on teacher resources. Due to the obvious regional economic difference, the uneven distribution of off-line education resources is directly caused. The online live education eliminates the regional difference, and the courses of excellent teachers can enter families in the small city through the internet. However, the existing online live broadcast education mode also depends on teacher resources, the number of students affected by a good teacher is very limited, and the problem of education resource allocation cannot be fundamentally solved. In addition, the live course requires a company to invest a lot in hardware, so that the cost of the online live education course is high, and common families cannot bear the high cost.
Disclosure of Invention
The invention aims to provide an interactive video teaching method and system to solve the problem that the existing online and offline education modes are too dependent on teacher resources to fundamentally solve equal distribution of education resources.
The embodiment of the invention provides an interactive video teaching method, which specifically comprises the following steps: dividing a target teaching video into a plurality of video segments, wherein each video segment contains a complete semantic meaning, and a trigger node is marked between every two adjacent video segments; monitoring whether activities of asking questions of students occur or not in the process of playing the teaching video; when the occurrence of student questioning activities is monitored, controlling the teaching video to pause playing at a subsequent trigger node closest to a currently played video segment, and triggering the process of processing the student questioning activities; and when the process of processing the activities of asking questions of the students is finished, controlling the teaching video to continue playing the next video clip from the subsequent trigger node.
The embodiment of the invention provides another interactive video teaching method, which specifically comprises the following steps: dividing a target teaching video into a plurality of video segments, wherein each video segment contains a complete semantic meaning, and a trigger node is marked between every two adjacent video segments; a mechanism for triggering video playing related to a teacher questioning link is arranged at one part of the triggering nodes; when the target teaching video is played to the trigger node provided with the mechanism, playing a video related to a teacher questioning link and associated with the current trigger node so as to ask questions of students; monitoring the response activities of the students about the provided questions, and triggering corresponding processes for processing the response activities according to the monitoring results.
The embodiment of the invention provides an interactive video teaching system, which comprises a main control device, wherein the main control device comprises: a memory; a processor; and an interactive video teaching device, wherein the interactive video teaching device is installed in the memory and comprises one or more software function modules executed by the processor, and the interactive video teaching device comprises: the system comprises a fragment dividing module, a target teaching video module and a target teaching video module, wherein the fragment dividing module is configured to divide the target teaching video into a plurality of video fragments, each video fragment contains a complete semantic meaning, and a trigger node is marked between every two adjacent video fragments; the monitoring module is configured to monitor whether activities of asking questions of students occur or not in the process of playing the teaching video; the first control module is configured to control the teaching video to pause playing at a subsequent trigger node closest to a currently played video segment and trigger a process of processing the activities of the student questioning when the occurrence of the activities of the student questioning is monitored; and the second control module is configured to control the teaching video to continue playing the next video segment from the subsequent trigger node when the process of processing the activities of the student questioning is finished.
The embodiment of the invention provides another interactive video teaching system, which comprises a main control device, wherein the main control device comprises: a memory; a processor; and an interactive video teaching device, wherein the interactive video teaching device is installed in the memory and comprises one or more software function modules executed by the processor, the device comprises: the system comprises a fragment dividing module, a target teaching video module and a target teaching video module, wherein the fragment dividing module is configured to divide the target teaching video into a plurality of video fragments, each video fragment contains a complete semantic meaning, and a trigger node is marked between every two adjacent video fragments; the mechanism setting module is configured to set a mechanism for triggering the video about the teacher questioning link to be played at a part of the trigger nodes; the first control module is configured to control the playing of a video related to a teacher questioning link associated with the current trigger node to ask students for questions when the target teaching video is played to the trigger node provided with the mechanism; and the second control module is configured to monitor response activities of the students about the provided questions and control and trigger corresponding processes for processing the response activities according to monitoring results.
According to the interactive video teaching method and system provided by the embodiment of the invention, the pre-made video course is segmented, and the triggering nodes are arranged between the segments for triggering the interactive process in the subsequent use period. During the period of playing the teaching video, if the occurrence of the activities of the students for asking questions is monitored, the teaching video is controlled to pause playing at a trigger node behind the teaching video and connected with the teaching video, and the process of processing the activities of the students for asking questions is triggered, so that the requirement of active interaction of the students is met. In addition, at least one part of the trigger nodes are provided with a mechanism for triggering the video about the question asked by the teacher to be played so as to meet the requirement of passive interaction of students. Different from the existing offline or online education mode, the method and the system provide a brand-new online education mode which is low in cost, high in interaction, strong in reproducibility and capable of being upgraded as required, and under the condition of a certain popularization range, the brand-new education mode can remarkably relieve or even completely solve the current situation that the education resources are seriously unbalanced in distribution.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a block diagram illustrating an interactive video teaching system according to an embodiment of the present invention;
fig. 2 is a schematic block diagram of a main control device according to an embodiment of the present invention;
fig. 3 is a flowchart of an interactive video teaching method according to an embodiment of the present invention;
FIG. 4 is a flowchart of sub-steps included in step S105 shown in FIG. 3 according to an embodiment of the present invention;
FIG. 5 is a flowchart illustrating another interactive video teaching method according to an embodiment of the present invention;
FIG. 6A is a statistical data of classroom performance of a student statistically obtained in an example according to an embodiment of the present invention;
FIG. 6B is personal information associated with the student in FIG. 6A;
FIG. 7 is a diagram illustrating another interactive video teaching method according to an embodiment of the present invention;
FIG. 8 is a flowchart illustrating another interactive video teaching method based on the method shown in FIG. 7 according to an embodiment of the present invention;
fig. 9 is a block diagram of an interactive video teaching device according to an embodiment of the present invention;
FIG. 10 is a schematic view of another interactive video teaching device based on the device shown in FIG. 9 according to an embodiment of the present invention;
fig. 11 is a block diagram of another interactive video teaching device different from the devices shown in fig. 9 and 10 according to an embodiment of the present invention.
Icon: 100-interactive video teaching system; 110 — a main control device; 120-a first responding device; 130-a second responding device; 112-a memory; 114-a processor; 116-an interactive video teaching device; 1162. 1602-fragment partitioning module; 1164-a monitoring module; 1166-a first control module; 1168-a second control module; 1170-progress monitoring module; 1172-a fifth control module; 1174. 1604-mechanism setting module; 1176. 1606-a third control module; 1178. 1608-a fourth control module; 1180-label module; 1182-monitoring module.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a block diagram illustrating an interactive video teaching system 100 according to an embodiment of the present invention. Referring to fig. 1, the interactive video teaching system 100 includes a main control device 110, a first response device 120, and a second response device 130. The first and second response devices 120 and 130, respectively, are communicatively connected with the main control device 110. Wherein the first response device 120 may be used to transmit a response signal to the main control device 110 in response to an operation of the student. The second responding device 130 may be used to monitor the student's attendance status.
Fig. 2 is a block diagram of the main control device 110 according to an embodiment of the present invention. Referring to fig. 2, the main control device 110 includes a memory 112, a processor 114 and an interactive video teaching device 116. Wherein the memory 112 and the processor 114 are electrically connected directly or indirectly to enable data transfer or interaction. The interactive video teaching device 116 includes at least one software function module which can be stored in the memory 112 in the form of software or firmware or solidified in the operating system of the main control apparatus 110. The processor 114 is used to execute executable modules stored in the memory 112, such as software functional modules or computer programs included in the interactive video teaching device 116.
Fig. 3 is a flowchart of an interactive video teaching method according to an embodiment of the present invention. The application scene of the method can be a classroom or a place similar to the classroom where a collective class can be taken (and can also be used for one-to-one or one-to-many on-line teaching of individuals). Referring to fig. 3, the method shown in the figure can be applied to the interactive video teaching system 100 shown in fig. 1. It is to be understood that the order of execution of the steps in the method provided by the present embodiment is not limited to the specific order shown in fig. 3 or described below.
Step S101, dividing a target teaching video into a plurality of video segments.
In this embodiment, a pre-created lecture video may be divided into a plurality of video segments, for example, according to a voice group. Each video segment contains complete semantic meaning, and trigger nodes are marked between every two adjacent video segments. In this embodiment, for convenience of description, all trigger nodes located after a video segment are referred to as subsequent trigger nodes of the video segment, and all trigger nodes located before the video segment are referred to as preceding trigger nodes of the video segment.
Step S103, monitoring whether activities of asking questions of students occur or not in the process of playing the teaching video.
In this embodiment, as an implementation, each student may be equipped with the first responding device 120. The first responding device 120 may emit a first signal in response to a preset operation of the student. For example, the first responding device 120 may be a smart stick equipped with a device capable of sensing angular changes, such as a gyroscope, and may provide signals by way of video recognition. The smart stick may emit the first signal described above when the tilt angle of the smart stick with respect to a horizontal plane with reference to, for example, a desk surface exceeds a preset angle under the operation of a student. Wherein, the preset angle may be, but is not limited to, 60 degrees.
When the main control device 110 monitors the first signal, it is determined that an activity of asking questions by students occurs; when the main control device 110 monitors a plurality of the first signals, determining that a plurality of student questioning activities occur; when the main control device 110 does not listen to the first signal, it is determined that no student questioning activity is occurring.
In addition, it is to be understood that the words "student" and "teacher" mentioned in the embodiments of the present invention are for illustrative purposes only and should be understood to include a broad meaning. The term "student" refers to any user who learns through teaching videos, and particularly refers to students at school. "teacher" refers to a lecturer included in a video, which plays a role of a teacher, in general, and refers to a working teacher, in particular.
And step S105, when the occurrence of the student questioning activity is monitored, controlling the teaching video to pause playing at a subsequent trigger node closest to the currently played video segment, and triggering the process of processing the student questioning activity.
In this embodiment, when the main control device 110 monitors that an activity of asking questions by students occurs, it controls the teaching video to pause playing when the current video segment is played, and triggers a process of processing the activity of asking questions by students.
In addition, in this embodiment, the main control device 110 may further determine whether actions of asking questions by a plurality of students occur first, and if actions of asking questions by a plurality of students occur, determine the sequence of processing the actions. And then, processing the actions of questioning the students according to the determined sequence.
As described above, when the main control device 110 listens to the plurality of first signals, it may be determined that an activity of asking questions by a plurality of students occurs, in which case the processing order may be determined according to the time sequence of the received plurality of first signals.
Referring to FIG. 4, as one embodiment, the process of processing the activities of each student asking questions may include the following sub-steps.
Substep S51: and determining the personal information and the position information of the students who ask questions.
In this embodiment, the first response device 120 equipped for each student may have a unique device identifier, and the unique device identifier of each first response device 120 is pre-associated with the corresponding student personal information and student seat information. The first signal emitted by the first responding device 120 in response to the preset operation of the student includes the unique device identification of the first responding device 120.
Specifically, for a classroom with fixed seating times of students, the personal information of the students and the seat information of the students may be associated in the system of the main control device 110 according to a pre-provided classroom seating time chart, and then the unique device identifiers of the first response devices 120 are associated with the personal information of the students, so as to implement the pre-association relationship between the unique device identifier of each first response device 120 and the corresponding personal information of the students and the seat information of the students. When the main control device 110 monitors the first signal, the unique device identifier of the first device may be obtained from the received first signal, and then the personal information and the location information of the student asking the question are determined according to the association relationship between the obtained unique device identifier and the personal information and the seat information of the student.
Specifically, for a classroom with unfixed seating number of students, an electronic tag may be provided on the desk of each student, and the electronic tag is written with the position information of the desk. The first response device 120 is provided with a radio frequency reader/writer capable of reading the electronic tag, so that the first signal includes the position information of the desk read from the electronic tag by the radio frequency reader/writer. When the main control device 110 monitors the first signal, the unique device identifier of the first response device 120 and the position information of the desk can be obtained from the received first signal (obtaining the position information of the desk can be understood as being equivalent to obtaining the seat information of the student), and then the personal information of the student asking the question can be determined according to the association relationship between the unique device identifier and the personal information of the student.
The position information of the students can also be determined by monitoring the sound source positions of the sounds answered by the students in an indoor sound source positioning mode. The technique is particularly suitable for situations where movement of the student's location may occur.
Substep S52: and calling a video with the teacher station orientation matched with the position information of the student according to the determination result to play so as to indicate that the student starts to ask a question.
In this embodiment, a database containing a plurality of interactive videos is stored in the system of the main control device 110. The main control device 110 can call up a video of the corresponding teacher's standing orientation according to the student's position information to play to indicate that the student starts to ask a question. In addition, the pronunciation of the name of the student can be embedded into the voice environment, so that the voice about the name of the student can be embedded when the video is played.
Step S53, the student' S question is identified.
When a student states a question, the student's question is recognized, such as by speech recognition.
Step S54: and matching the recognition result with questions in a question database established in advance, and controlling to play videos of contents which are about to solve the questions or videos of contents which are about to fail to solve the questions according to the matching result.
In this embodiment, the process of controlling the playing of the corresponding video according to the matching result may be as follows. And acquiring the maximum matching value in the matching result according to the matching result. When the maximum matching value is greater than or equal to a first preset threshold value, such as 90%, a target question in the question database corresponding to the maximum matching value is determined, and the playing of a video regarding the content that solves the target question is controlled. When the maximum matching value is smaller than a first preset threshold value and larger than a second preset threshold value, such as 50%, the target question corresponding to the maximum matching value in the question database is played in a video or voice mode, so that whether the played question is consistent with the question posed by the student or not is determined according to the answer of the student. And if the answer of the student is judged to be basically consistent with the answer of the student, controlling to play the video for solving the target question. If the answer of the student is judged to be inconsistent, the video of the content of the question which cannot be answered by the student is controlled to be played, for example, the video can play 'the question can not be answered at present, and teaching assistance can help you in class'. When the maximum matching value is smaller than or equal to a second preset threshold value, controlling to play a video about the content which cannot answer the question, adding the student question into a question database and marking the student question as a question to be answered, and waiting for a manager to input an answer.
And step S107, controlling the teaching video to continue playing the next video segment from the subsequent trigger node when the process of processing the activities of questioning of students is finished.
For example, after the video about the content of solving the target question or the video about the content of failing to solve the student question is played, it can be understood that the process of processing the student question-asking activity is finished, so that the teaching video can be controlled to continue playing the next video segment from the subsequent trigger node.
For another example, after playing a video about a content that solves the above-described target question, a video about a content that asks the student whether or not to solve his question is played. Then, the student's answers are monitored. If a positive answer is monitored, the process of processing the activities of the student questions is finished, so that the target teaching video can be controlled to continue playing the next video segment from the subsequent trigger node. And if a negative answer is monitored, controlling to play the video about the content which cannot solve the question, and then controlling the target teaching video to continue to play the next video segment from the subsequent trigger node.
Optionally, the main control device 110 may monitor the playing progress of the teaching video. For example, the playing progress of the target teaching video can be monitored at a preset monitoring node. It is to be noted that the monitoring node does not necessarily have to be the triggering node described above. In principle, the monitoring node may be located at any position of the video. And when the current playing progress is delayed to exceed the preset time length compared with the preset playing progress of the target teaching video, triggering to play the specific video which is associated with the monitoring node and responds to the situation that the delay exceeds the preset time length or accelerating the playing speed at a specific multiplying power. As an example, when the main control device 110 controls the suspension of the teaching video at the latest subsequent trigger node of the current video segment in response to the activities of the student asking questions, the course progress monitoring may be performed first to determine whether to continue the subsequent interactive process according to the monitoring result. If the monitoring result is that the course progress lags behind for more than a preset time period, such as 120 seconds, a video about the content of the problem to be solved in class can be played, and meanwhile, the provided problem can be left to be solved by the assistant teaching in class to indicate that the course time of the student is insufficient.
Optionally, in this embodiment, each video segment may be labeled with a corresponding concentration label in advance according to the content of the video segment. Then the concentration degree of the student is monitored, and when the current concentration degree state of the student is not matched with the labeled concentration degree label of the currently played video clip and the duration time of the current concentration degree state exceeds the preset duration time, the student is reminded.
Wherein, concentration tags may include, but are not limited to, the following three: a heads-down reading or counting tag; raising heads and paying attention to the label of the video; no required labeling is made.
In this embodiment, the concentration of the student can be monitored by the second response device 130. The second responding device 130 may be, but is not limited to, smart 3D glasses. The second responding apparatus 130 can acquire personal information of the student who belongs to by performing bluetooth matching with the first responding apparatus 120.
3D glasses with electronic switches are equipped for each student, so that the students can see stereoscopic images of teaching videos, and participation sense of the students is increased. In addition, the 3D glasses can be provided with devices such as a balance sensor, a microphone, an earphone and the like. When the student lowers the head during the time period (non-student reading or calculating time) requiring the raising of the head, the 3D glasses incline beyond the preset angle to trigger the balance sensor to start timing, and when the accumulated timing exceeds the designated time such as 90 seconds, the main control device 110 can control the buzzer in the 3D glasses of the student to play to remind the student independently. In addition, when the student answers the question, the microphone can help collect voice information, and the accuracy of voice recognition is improved.
Fig. 5 is a flowchart of another interactive video teaching method according to an embodiment of the present invention. Unlike the method shown in fig. 3, the method of the present embodiment further includes the following steps.
In step S201, a mechanism for triggering the video playing related to the teacher questioning link is set at a part of the trigger nodes.
In this embodiment, 3-5 teacher questioning interaction links may be set in the teaching video corresponding to the content of a class, that is, a trigger mechanism may be set at 3-5 trigger nodes.
And step S203, when the target teaching video is played to the trigger node provided with the mechanism, controlling to play the video related to the teacher questioning link and associated with the current trigger node so as to ask the students questions.
In this embodiment, the question videos corresponding to different trigger nodes (i.e., the interactive videos for the teacher to ask a question) are usually different. Before controlling and playing the questioning video, the main controller can judge in advance whether the questions to be questioned in the current questioning video are already questioned in the class time, and if so, the main controller can directly skip the current teacher questioning link.
And S205, monitoring the response activities of the students about the questions, and controlling and triggering the corresponding processes for processing the response activities according to the monitoring results.
In this embodiment, the first responding device 120 may emit the second signal in response to the operation of the student. Accordingly, the response activity may include an activity in which the student emits the second signal in response to the first response device 120 being operated by the question.
It is noted that the first signal and the second signal may, but need not, contain an identifier to distinguish between them, so that the main control device 110 distinguishes between the above-mentioned student questioning activity and the above-mentioned response activity. Thus, the difference in the two operations that trigger the emission of the first and second signals for the first responding device 120 may be judged by the system according to different scenarios.
The second signal can realize the association with the personal information and the position information of the student, and the specific way of realizing the association can be operated by referring to the way of associating the first signal with the personal information and the position information of the student. Therefore, the main control device 110 may randomly or according to a preset algorithm select personal information and position information of the student corresponding to at least one second signal from all the monitored second signals, and then call a video with a teacher station orientation matching the position information of the student according to the obtained information to play so as to indicate that the student starts answering the question. The preset algorithm may be, but is not limited to, selecting based on the number of times that the student answers the question in the class hour or selecting based on the sequence in which the second signal is received.
The intercepted answers are identified (e.g., speech recognition) when the selected student states his or her answer. When the recognition of the answer is finished, it may be preferable to first determine whether the current lesson progress is delayed from the predetermined lesson progress by more than a preset time period, for example, 120 seconds. If the answer is not found, calling a video about the content asking whether other answers exist for playing, repeating the processes of selecting students and identifying answers, and calling a video about the content of the answer for publishing the question for playing; if the answer is yes, directly calling the video of the content of the answer about the published question for playing.
After the video about the contents of the published answer is played, the main control device 110 controls the lecture video to continue playing the next video segment from the current trigger node.
It is to be understood that if the main control device 110 does not receive any second signal within a predetermined time, such as 10 seconds, after the video on the contents of the teacher's question is played, the main control device 110 may randomly select or select a certain student according to a predetermined algorithm or sequentially select several students to answer the question according to the pre-stored personal information of the students.
It is to be noted that, in the embodiment illustrated in fig. 3 and 5, the main control device 110 may also be constructed with a database for counting student classroom performance and record student performance based on student feedback during each interaction and during concentration monitoring to digitize student overall performance so that a teacher or a school party can have a rough understanding of each student's learning situation. The classroom performance may include, but is not limited to, the following three types: performance in terms of answering questions; performance in terms of proactive questions; performance on concentration. Statistical data of a student's classroom performance, which is statistically obtained in one example, can be provided by way of example with reference to fig. 6A, and fig. 6B is personal information associated with the student.
In addition, in the embodiments illustrated in fig. 3 and 5, the implementation of positioning students may be replaced by wideband (UWB) technology, and may also be assisted by indoor sound source positioning technology. The monitoring of the questioning activities of the students or the student response activities to the questions of the teachers can also be realized by an image recognition technology, but under the condition that indoor projection light is dark, misjudgment often occurs in the image recognition technology. Similarly, the monitoring of the concentration degree of the students can also be realized through the face image recognition technology, but under the conditions that the indoor projection light is dark and the positions of the students are far away from the image acquisition equipment, misjudgment often occurs.
In summary, in the interactive video teaching method provided in the embodiment of the present invention, the teaching video is segmented to trigger and call the corresponding interactive video at the corresponding node through the peripheral signal in the interaction process, so as to implement flexible teaching and interaction, and different trigger mechanisms can be set according to different scenes to meet the diversified interactive scene requirements. In addition, the interaction of the student questioning link can be continuously strengthened and enriched in the problem database in the using process, so that the database can be upgraded according to the requirement. Meanwhile, voice recognition is used as an interactive medium, and even if the teaching is carried out through videos, the classroom can return to a natural communication mode. In addition, interactive videos in different interactive forms can be prepared facing the same interactive scene, and the interactive videos can be randomly or logically selected according to a certain logic in the course of playing the teaching video, so that the interactive process is diversified and diversified.
In addition, in the embodiment of the present invention, the positioning of the student is first applied to the online education mode by the cooperation of the main control device 110 and the first response device 120, so that the application of the video lecture system to a large class of lectures (non-one-to-one lecture) becomes possible. In addition, the adoption of the first response device 120 such as a smart stick makes the way of students actively asking questions more natural, and can effectively reduce the misjudgment rate and the difficulty of technical implementation compared with image recognition. The second response device 130 such as intelligent 3D glasses is used to change the teaching from a 2D scene to a 3D scene, so that the video teaching scene is closer to the real teaching scene and the participation of students is stronger. Moreover, the monitoring of the concentration degree of the students is realized through the sensors on the intelligent 3D glasses, the teaching effect can be obviously improved, and meanwhile, compared with the face recognition technology, the method can also obviously reduce the misjudgment rate and simplify the complexity of the technical realization.
Fig. 7 is another interactive video teaching method according to an embodiment of the present invention. It is to be noted that, regarding the steps similar to the steps described in the foregoing embodiments in the method provided in this embodiment, specific implementation manners of the steps may refer to the specific descriptions above, and are not described again here.
Step S301, dividing a target teaching video into a plurality of video segments, wherein each video segment contains a complete semantic meaning, and a trigger node is marked between every two adjacent video segments.
Step S303, a mechanism for triggering the video playing of the teacher questioning link is arranged at one part of the trigger nodes.
And S305, when the target teaching video is played to the trigger node provided with the mechanism, playing a video related to a teacher questioning link and associated with the current trigger node so as to ask the students for questions.
And step S307, monitoring the response activities of the students about the questions, and triggering corresponding processes for processing the response activities according to the monitoring results.
Fig. 8 is another interactive video teaching method based on the embodiment shown in fig. 7 according to an embodiment of the present invention. The method provided in this embodiment is different from the method of the embodiment in fig. 7, and includes the following steps.
Step S401, in the course of playing the teaching video, monitoring whether activities of asking questions of students occur. This step may be performed after step S301, but is not limited thereto.
Step S403, when the occurrence of the student questioning activity is monitored, the teaching video is controlled to pause playing at the subsequent trigger node closest to the currently played video segment, and the process of processing the student questioning activity is triggered.
And step S405, controlling the teaching video to continue playing the next video segment from the subsequent trigger node when the process of processing the activities of questioning of students is finished.
It is to be noted that, regarding the specific implementation of steps S401 to S405, reference may be made to the detailed description above regarding steps S103 to S107 shown in fig. 3.
Fig. 9 is a block diagram of an interactive video teaching device 116 according to an embodiment of the present invention. As shown in the figure, in the present embodiment, the interactive video teaching device 116 includes a fragment dividing module 1162, a monitoring module 1164, a first control module 1166, a second control module 1168, a progress monitoring module 1170, and a fifth control module 1172.
The fragment dividing module 1162 is configured to divide the target teaching video into a plurality of video fragments, where each video fragment includes a complete semantic meaning, and a trigger node is marked between every two adjacent video fragments.
A monitoring module 1164 configured to monitor whether an activity of asking questions of students occurs during the course of playing the teaching video.
And a first control module 1166 configured to control the teaching video to pause playing at a subsequent trigger node closest to the currently played video segment and trigger a process of processing the activities of the student questioning when the occurrence of the activities of the student questioning is monitored.
A second control module 1168 configured to control the teaching video to continue playing the next video segment from the subsequent trigger node when the process of processing the activities of the student questioning is finished.
And the progress monitoring module 1170 is configured to monitor the playing progress of the target teaching video at a preset monitoring node.
A fifth control module 1172 configured to trigger playing of a particular video associated with the monitoring node in response to the delay exceeding a preset duration when the current playing progress is delayed beyond the preset duration compared to the preset playing progress of the target lecture video.
The above modules may be implemented by software codes, and in this case, the modules may be stored in a memory. The above modules may also be implemented by hardware, such as an integrated circuit chip.
The implementation principle and the generated technical effect of the interactive video teaching device 116 provided by the embodiment of the present invention are the same as those of the foregoing method embodiments, and for the sake of brief description, no part of the embodiment of the device is mentioned, and reference may be made to the corresponding contents in the foregoing method embodiments.
Fig. 10 is another interactive video teaching device 116 provided by the interactive video teaching device 116 shown in fig. 9 according to the embodiment of the present invention. Compared with the apparatus shown in fig. 9, the interactive video teaching apparatus 116 in this embodiment further includes the following modules: a mechanism setting module 1174, a third control module 1176, a fourth control module 1178, a labeling module 1180, and a monitoring module 1182.
A mechanism setting module 1174 configured to set, at a part of the trigger nodes, a mechanism for triggering the video about the teacher questioning link to be played.
And a third control module 1176 configured to control playing of a video about a teacher questioning link associated with the current trigger node to ask students for questions when the target teaching video is played to the trigger node provided with the mechanism.
The fourth control module 1178 is configured to monitor the response activity of the student regarding the question being asked, and to control triggering of a corresponding process of handling the response activity according to the monitoring result.
The labeling module 1180 is configured to label each video segment with a corresponding concentration label according to the content of the video segment.
The monitoring module 1182 is configured to monitor the concentration degree of the student through the third device, and when it is monitored that the current concentration degree state of the student and the concentration degree label marked on the currently played video clip are not matched and the duration of the current concentration degree state exceeds the preset duration, the third device is controlled to remind the student.
The above modules may be implemented by software codes, and in this case, the modules may be stored in a memory. The above modules may also be implemented by hardware, such as an integrated circuit chip.
The implementation principle and the generated technical effect of the interactive video teaching device 116 provided by the embodiment of the present invention are the same as those of the foregoing method embodiments, and for the sake of brief description, no part of the embodiment of the device is mentioned, and reference may be made to the corresponding contents in the foregoing method embodiments.
Fig. 11 is a block diagram of another interactive video teaching device 116 different from the devices shown in fig. 9 and 10 according to the embodiment of the present invention. As shown in the figure, in this embodiment, the interactive video teaching device 116 includes a segment dividing module 1602, a mechanism setting module 1604, a third control module 1606, and a fourth control module 1608.
The segment dividing module 1602 is configured to divide the target teaching video into a plurality of video segments, where each video segment includes a complete semantic meaning, and a trigger node is marked between every two adjacent video segments.
A mechanism setting module 1604 configured to set a mechanism for triggering the video about the teacher questioning link to be played at a part of the trigger nodes.
And a third control module 1606 configured to control to play a video related to a teacher questioning link associated with the current trigger node when the target teaching video is played to the trigger node provided with the mechanism, so as to ask a student for a question.
The fourth control module 1608 is configured to monitor the response activity of the student regarding the question being raised, and to control and trigger the corresponding process of handling the response activity according to the monitoring result.
The above modules may be implemented by software codes, and in this case, the modules may be stored in a memory. The above modules may also be implemented by hardware, such as an integrated circuit chip.
The implementation principle and the generated technical effects of the interactive video teaching device provided by the embodiment of the invention are the same as those of the method embodiment, and for brief description, corresponding contents in the method embodiment can be referred to where no mention is made in the embodiment of the device.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Industrial applicability
The interactive video teaching method and the interactive video teaching system provided by the embodiment of the invention realize a brand-new online education mode which is low in cost, high in interaction, strong in reproducibility and capable of being upgraded as required, and under the condition of a certain popularization range, the brand-new education mode can remarkably relieve or even completely solve the current situation that the allocation of education resources is seriously unbalanced at present. In the brand-new education mode, the teaching videos are segmented to trigger and call corresponding interactive videos at corresponding nodes through peripheral signals in the interaction process so as to realize flexible teaching and interaction, and different trigger mechanisms can be set according to different scenes to meet diversified interactive scene requirements.
Claims (15)
1. An interactive video teaching method is characterized in that the method comprises the following steps:
dividing a target teaching video into a plurality of video segments, wherein each video segment contains a complete semantic meaning, and a trigger node is marked between every two adjacent video segments;
monitoring whether activities of asking questions of students occur or not in the process of playing the teaching video;
when the occurrence of student questioning activities is monitored, the teaching video is controlled to pause playing at a subsequent trigger node closest to a currently played video segment, and a process of processing the student questioning activities is triggered;
wherein, the process of processing the activities of the student asking questions comprises the following steps:
determining whether actions asked for questions by a plurality of students occur, and if yes, determining the sequence of processing the actions;
processing the actions of the questions of the students according to the determined sequence,
wherein, the step of processing the action of asking questions of each student comprises:
determining personal information and position information of students who ask questions;
calling a video with a teacher standing position orientation matched with the position information of the student according to the determination result to play so as to indicate that the student starts to ask a question;
when the process of processing the activities of asking questions of students is finished, controlling the teaching video to start to play the next video clip from the subsequent trigger node; and
a mechanism for triggering video playing related to a teacher questioning link is arranged at one part of the triggering nodes;
when a target teaching video is played to a trigger node provided with the mechanism, playing the video related to the teacher question link and associated with the current trigger node so as to ask questions of students;
monitoring response activities of students about the provided questions, and triggering corresponding processes for processing the response activities according to monitoring results;
according to the content of the video clips, labeling a corresponding concentration label for each video clip, wherein the concentration label comprises a label for reading or calculating in a head-down mode, a label for paying attention to the video in a head-up mode and a label not required to be made;
monitoring the concentration degree of the student, and reminding the student when the current concentration degree state of the student is monitored to be not in accordance with the labeled concentration degree label of the currently played video clip and the duration of the current concentration degree state of the student exceeds the preset duration; and
each student is provided with a second device for emitting a second signal in response to the student's operation, the responsive activity comprising an activity in which the student emits the second signal in response to the student operating the second device in response to the raised question; and is
Wherein the second device is smart 3D glasses comprising a sensor through which a concentration of a student is monitored.
2. The method of claim 1, wherein the process of processing the student questioning activities further comprises:
monitoring problems proposed by students and identifying the problems of the students;
and matching the recognition result with questions in a question database established in advance, and controlling to play videos of contents which are about to solve the questions or videos of contents which are about to fail to solve the questions according to the matching result.
3. The method of claim 2, wherein the step of controlling the playing of the corresponding video according to the matching result comprises:
obtaining the maximum matching value in the matching result;
when the maximum matching value is larger than or equal to a first preset threshold value, determining a target question corresponding to the maximum matching value in the question database, and controlling to play a video about the content for solving the target question;
when the maximum matching value is smaller than a first preset threshold value and larger than a second preset threshold value, playing a target question corresponding to the maximum matching value in the question database to determine whether the played question is consistent with a question posed by the student, if so, controlling to play a video about the content of solving the target question, and if not, controlling to play a video about the content of failing to solve the question posed by the student;
and when the maximum matching value is less than or equal to a second preset threshold value, controlling to play a video about the content which cannot solve the question.
4. The method of claim 3, further comprising:
after playing the video about the content that solves the target question, playing the video about the content that asks the student whether to solve his question;
monitoring the answers of the students;
if a positive answer is monitored, controlling the target teaching video to continue playing the next video segment from the subsequent trigger node;
and if a negative answer is monitored, controlling to play a video about the content which cannot solve the question, and then controlling the target teaching video to continue to play the next video segment from the subsequent trigger node.
5. The method according to any one of claims 2 to 4, wherein each student is equipped with a first device;
the step of monitoring whether activities of asking questions of students occur in the process of playing the teaching video comprises the following steps:
monitoring whether a first signal sent by first equipment in response to preset operation of a student is received;
when the monitoring result is that the first signal is received, determining that the activity of asking questions of students occurs;
when the monitoring result is that a plurality of first signals are received, determining that a plurality of students ask questions about the activities;
when the monitoring result is that no first signal is received, determining that no student questioning activity occurs.
6. The method of claim 5, wherein each first device has a unique device identifier, the unique device identifier of the first device is pre-associated with the student personal information and the student seat information, and the first signal includes information regarding the unique device identifier of the first device;
the step of determining the personal information and the location information of the students who ask questions comprises the following steps:
acquiring a unique device identification of the first device from the received first signal;
and determining the personal information and the position information of the students asking questions according to the incidence relation between the unique equipment identification and the personal information and the seat information of the students.
7. The method according to claim 5, wherein each first device has a unique device identifier, and the unique device identifier is in a pre-established association relationship with the personal information of the student; an electronic tag is arranged on a desk of each student, the electronic tag is written with the position information of the desk, a radio frequency reader-writer capable of reading the electronic tag is arranged in the first equipment, and the first signal comprises the position information of the desk read from the electronic tag by the radio frequency reader-writer;
the step of determining the personal information and the location information of the students who ask questions comprises the following steps:
acquiring a unique device identification of the first device and position information of the desk from the received first signal;
and determining the personal information of the students asking questions according to the incidence relation between the unique equipment identification and the personal information of the students.
8. The method of claim 1, wherein the association with the personal information and the location information of the student is enabled according to the second signal;
the steps of monitoring the response activities of the students about the questions and controlling and triggering the corresponding processes of processing the response activities according to the monitoring results comprise:
acquiring personal information and position information of the student corresponding to at least one second signal according to preset logic and all the monitored second signals;
and calling a video with the teacher station position orientation matched with the position information of the student according to the acquired personal information and the acquired position information, and playing the video to indicate that the student starts answering the question.
9. The method of any one of claims 1-4 or 8, further comprising:
monitoring the playing progress of the target teaching video at a preset monitoring node;
and when the current playing progress is delayed to exceed the preset time length compared with the preset playing progress of the target teaching video, triggering to play the specific video which is associated with the monitoring node and responds to the situation that the delay exceeds the preset time length, or triggering to accelerate or decelerate the video playing speed.
10. The interactive video teaching system is characterized by comprising a main control device, wherein the main control device comprises:
a memory;
a processor; and
an interactive video teaching device installed in the memory and including one or more software function modules executed by the processor, the device comprising:
the system comprises a fragment dividing module, a target teaching video module and a target teaching video module, wherein the fragment dividing module is configured to divide the target teaching video into a plurality of video fragments, each video fragment contains a complete semantic meaning, and a trigger node is marked between every two adjacent video fragments;
the monitoring module is configured to monitor whether activities of asking questions of students occur or not in the process of playing the teaching video;
the first control module is configured to control the teaching video to pause playing at a subsequent trigger node closest to a currently played video segment and trigger a process of processing the activities of student questioning when the occurrence of the activities of student questioning is monitored;
wherein, the process of processing the activities of the first control module for asking questions of the students comprises the following steps:
determining whether actions asked for questions by a plurality of students occur, and if yes, determining the sequence of processing the actions;
processing the actions of the questions asked by the students according to the determined sequence, wherein the step of processing the actions of the questions asked by each student comprises the following steps:
determining personal information and position information of students who ask questions;
calling a video with a teacher standing position orientation matched with the position information of the student according to the determination result to play so as to indicate that the student starts to ask a question;
the second control module is configured to control the teaching video to start to play the next video segment from the subsequent trigger node when the process of processing the activities of questioning of students is finished; and
the mechanism setting module is configured to set a mechanism for triggering the video about the teacher questioning link to be played at a part of the trigger nodes;
the third control module is configured to control the video related to the teacher questioning link and associated with the current trigger node to be played so as to ask the students for questions when the target teaching video is played to the trigger node provided with the mechanism;
the fourth control module is configured to monitor response activities of students about the provided questions and control and trigger corresponding processes for processing the response activities according to monitoring results;
wherein the system further comprises a second device configured to emit a second signal in response to operation by the student, the responsive activity comprising an activity in which the student emits the second signal in response to the second device being operated by the proposed question;
wherein the second device is smart 3D glasses comprising a sensor by which a concentration of a student is monitored; and is
Wherein the system further comprises a third device configured to monitor the student's attentiveness status; and
the interactive video teaching device further comprises the following modules:
the labeling module is configured to label each video segment with a corresponding concentration label according to the content of the video segment, wherein the concentration label comprises a label for head-down reading or calculation, a label for head-up concerning the video and a label not required to be made;
the monitoring module is configured to monitor the concentration degree of the student through the third equipment, and when the current concentration degree state of the student and the concentration degree label marked on the video clip played currently are monitored, the current concentration degree state duration time exceeds the preset duration time, the third equipment is controlled to remind the student.
11. The system of claim 10, wherein the processing of the activities of the first control module to ask questions of the student further comprises:
monitoring problems proposed by students and identifying the problems of the students;
and matching the recognition result with questions in a question database established in advance, and controlling to play videos of contents which are about to solve the questions or videos of contents which are about to fail to solve the questions according to the matching result.
12. The system of claim 10, further comprising a first device for each student;
the monitoring module is configured to monitor whether activities of asking questions of students occur in the process of playing the teaching video:
monitoring whether a first signal sent by first equipment in response to preset operation of a student is received;
when the monitoring result is that the first signal is received, determining that the activity of asking questions of students occurs;
when the monitoring result is that a plurality of first signals are received, determining that a plurality of students ask questions about the activities;
when the monitoring result is that no first signal is received, determining that no student questioning activity occurs.
13. The system of claim 12, wherein each first device has a unique device identification, the unique device identification of the first device is pre-associated with the student personal information and the student seat information, and the first signal includes information regarding the unique device identification of the first device;
the mode that the first control module determines the personal information and the position information of the students who ask questions comprises the following steps:
acquiring a unique device identification of the first device from the received first signal;
and determining the personal information and the position information of the students asking questions according to the incidence relation between the unique equipment identification and the personal information and the seat information of the students.
14. The system of claim 10, wherein association with personal and location information of a student is enabled based on the second signal;
the fourth control module is configured to monitor response activities of students about the provided questions, and controls a manner of triggering corresponding processes for processing the response activities according to monitoring results to include:
acquiring personal information and position information of the student corresponding to at least one second signal according to preset logic and all the monitored second signals;
and calling a video with the teacher station position orientation matched with the position information of the student according to the acquired personal information and the acquired position information, and playing the video to indicate that the student starts answering the question.
15. The system according to any of claims 10-14, wherein said interactive video teaching device further comprises the following modules:
the progress monitoring module is configured to monitor the playing progress of the target teaching video at a preset monitoring node;
and the fifth control module is configured to trigger the specific video which is associated with the monitoring node and responds to the situation that the delay exceeds the preset time length to be played when the delay of the current playing progress exceeds the preset time length compared with the preset playing progress of the target teaching video.
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