CN112270264A

CN112270264A - Multi-party interactive teaching system

Info

Publication number: CN112270264A
Application number: CN202011175043.5A
Authority: CN
Inventors: 蔡席
Original assignee: Hangzhou Hikvision Digital Technology Co Ltd
Current assignee: Hangzhou Hikvision Digital Technology Co Ltd
Priority date: 2020-10-28
Filing date: 2020-10-28
Publication date: 2021-01-26

Abstract

The embodiment of the invention relates to the technical field of interactive teaching, and provides a multi-party interactive teaching system, which comprises: the system comprises a server, a master classroom recording and broadcasting host and student state display equipment which are arranged in a master classroom, and a slave classroom recording and broadcasting host and first student image acquisition equipment which are arranged in each slave classroom; each slave classroom recording and broadcasting host sends slave classroom student pictures acquired in real time based on first student image acquisition equipment to a server, and determined slave classroom behavior data; the server sends the received behavior data of each slave classroom to the master classroom recording and broadcasting host; the master classroom recording and broadcasting host receives each slave classroom behavior data sent by each server; the student status display device obtains the slave classroom behavior data of each slave classroom from the master classroom recording and broadcasting host computer, and displays the slave classroom behavior data of each slave classroom. Compared with the prior art, the technical scheme provided by the embodiment of the invention can provide the lecture listening state of each student in the slave classroom in the course of lecture.

Description

Multi-party interactive teaching system

Technical Field

The invention relates to the technical field of interactive teaching, in particular to a multi-party interactive teaching system.

Background

Currently, with the development of computer technology, in order to balance the education level in each area, a multi-party interactive teaching system is generally used, so that students in an area with a lower education level can watch the courses of teachers in an area with a higher education level synchronously with students in an area with a higher education level. In an application scenario of the multi-party interactive teaching system, a classroom in which a teacher is located may be referred to as a master classroom, and other classrooms may be referred to as slave classrooms.

In the related art, as shown in fig. 1, the multi-party interactive teaching system may include: a server 130, a master classroom recording and broadcasting host 111 and a teacher image acquisition device 112 which are arranged in the master classroom 110; a slave classroom recording and broadcasting host 121 and a teaching display screen 122 arranged in a slave classroom. The teacher image acquisition device 112 in the main classroom 110 acquires teaching videos of teachers nearby the podium in real time and sends the teaching videos to the main classroom recording and broadcasting host 111; the main classroom recording and broadcasting host 111 sends the teaching video to the server 130; the server 130 sends the teaching video to each slave classroom recording and broadcasting host 121; each slave classroom recording and broadcasting host 121 transmits the teaching video to the teaching display screen 122 in the slave classroom for display.

However, in the above-described related art, since the multi-party interactive teaching system cannot provide the listening status of the students in each slave classroom during the course of lecture, the teacher cannot view the listening status of the students in each slave classroom.

Disclosure of Invention

The embodiment of the invention aims to provide a multi-party interactive teaching system to provide the listening state of each student in a slave classroom in the teaching process, so that a teacher can check the listening state of each student in the slave classroom in the teaching process.

The specific technical scheme is as follows:

the embodiment of the invention provides a multi-party interactive teaching system, which comprises: the system comprises a server, a master classroom recording and broadcasting host and student state display equipment which are arranged in a master classroom, and a slave classroom recording and broadcasting host and first student image acquisition equipment which are arranged in each slave classroom;

each slave classroom recording and broadcasting host is used for determining slave classroom behavior data of a slave classroom in which the slave classroom recording and broadcasting host is positioned based on slave classroom student pictures which are acquired in real time by a first student image acquisition device of the slave classroom in which the slave classroom recording and broadcasting host is positioned, and transmitting the determined slave classroom behavior data to the server; wherein the slave classroom behavior data for each slave classroom is used to characterize: the attendance status of the students in the slave classroom;

the server is used for receiving the slave classroom behavior data sent by each slave classroom recording and broadcasting host and sending the slave classroom behavior data of each slave classroom to the master classroom recording and broadcasting host;

the main classroom recording and broadcasting host is used for receiving the slave classroom behavior data of each slave classroom sent by the server;

the student state display device is used for obtaining the slave classroom behavior data of each slave classroom from the master classroom recording and broadcasting host computer and displaying the slave classroom behavior data of each slave classroom.

Optionally, in a specific implementation manner, each slave classroom recording and broadcasting host is specifically configured to: receiving the pictures of the students in the slave classroom, which are acquired in real time by a first student image acquisition device of the slave classroom where the slave classroom recording and broadcasting host is located; calculating a first head-up rate of each first preset period according to a first preset period duration based on the received slave classroom student pictures, wherein the first head-up rate is used as slave classroom behavior data of a slave classroom in which the slave classroom recording and broadcasting host is located; and transmitting the determined slave classroom behavior data to the server.

Optionally, in a specific implementation manner, each first student image capturing device is specifically configured to: acquiring the slave classroom student pictures of the slave classroom in which the first student image acquisition equipment is positioned in real time; calculating a second head lifting rate of each second preset period according to the second preset period duration based on the collected images of the students in the classroom; transmitting the acquired images of the students in the classroom and the calculated second head lifting rate to a slave classroom recording and broadcasting host in which the first student image acquisition device is positioned;

each slave classroom recording and broadcasting host is specifically used for: receiving the pictures of the secondary classroom students and the second head lifting rate, which are sent by the secondary classroom recording and broadcasting host from the first student image acquisition equipment of the classroom, calculating the third head lifting rate of each third preset period as the secondary classroom behavior data of the secondary classroom in which the secondary classroom recording and broadcasting host is located, and sending the calculated secondary classroom behavior data to the server; wherein the third preset period duration is an integer multiple of the second preset period duration.

Optionally, in a specific implementation manner, the master classroom recording and broadcasting host is further configured to add 1 to the recorded number of interactions in any slave classroom when receiving an interaction start instruction for the slave classroom;

the student state display equipment is further used for obtaining the interaction times of each slave classroom from the master classroom recording and broadcasting host computer and displaying the interaction times of each slave classroom and/or the total interaction times of each slave classroom.

Optionally, in a specific implementation manner, the master classroom recording and broadcasting host is further configured to determine, when receiving an interaction end instruction for any slave classroom, a duration between times when a first interaction start instruction and the interaction end instruction are received, as a first interaction duration, and update the interaction duration of the slave classroom as: the sum of the recorded interaction duration of the slave classroom and the first interaction duration; wherein the first interaction starting instruction is as follows: before the interaction ending instruction, an interaction starting instruction aiming at the slave classroom is received for the last time;

the student state display equipment is further used for obtaining the interaction duration of each slave classroom from the master classroom recording and broadcasting host computer and displaying the interaction duration of each slave classroom and/or the total interaction duration of each slave classroom.

Optionally, in a specific implementation manner, the system further includes: the auxiliary image acquisition equipment is arranged in the main classroom and has a fixed shooting angle;

the auxiliary image acquisition equipment is used for acquiring the main classroom picture in an acquisition range corresponding to the shooting angle in real time and sending the acquired main classroom picture to the main classroom recording and broadcasting host in real time;

the main classroom recording and broadcasting host is also used for receiving the main classroom picture and detecting whether a face image meeting preset interaction conditions exists in the main classroom picture or not; when the face image is detected, determining the duration of continuous detection of the face image, and updating the total interaction duration of each slave classroom into: the sum of the recorded total interaction time length of each slave classroom and the determined time length;

the student state display equipment is further used for obtaining the total interactive duration from the main classroom recording and broadcasting host computer and displaying the total interactive duration.

Optionally, in a specific implementation manner, the system further includes: a second student image capture device disposed in the master classroom;

the main classroom recording and broadcasting host is also used for determining main classroom behavior data of the main classroom based on the main classroom student pictures acquired by the second student image acquisition equipment in real time; wherein the master classroom behavior data is used to characterize: the lecture listening state of the students in the main classroom;

the student state display equipment is also used for obtaining the main classroom behavior data from the main classroom recording and broadcasting host computer and displaying the main classroom behavior data.

Optionally, in a specific implementation manner, the master classroom recording and broadcasting host is further configured to detect whether a student in a standing state exists in a picture of the master classroom student, and add 1 to the recorded number of interactions in the master classroom when the student in the standing state is detected;

the student state display equipment is further used for obtaining the interaction times of the main classroom from the main classroom recording and broadcasting host computer and displaying the interaction times of the main classroom.

Optionally, in a specific implementation manner, the master classroom recording and broadcasting host is further configured to determine a duration of the student in the standing state existing in the master classroom student picture when it is detected that the student in the standing state disappears in the master classroom student picture, and update the interaction duration of the master classroom to: the sum of the recorded interaction time length of the main classroom and the determined time length;

the student state display equipment is further used for obtaining the interaction duration of the main classroom from the main classroom recording and broadcasting host computer and displaying the interaction duration of the main classroom.

Optionally, in a specific implementation manner, the master classroom recording and broadcasting host is further configured to store currently recorded course data about each classroom for an external device to read when a teaching end instruction is obtained;

wherein the course data of each classroom comprises at least one of the following data:

the master classroom comprises slave classroom behavior data of each slave classroom, interaction times of each slave classroom, total interaction times of each slave classroom, interaction duration of each slave classroom, total interaction duration of each slave classroom, master classroom behavior data, master classroom interaction times and master classroom interaction duration.

Optionally, in a specific implementation manner, the system further includes: a teacher image capturing device provided in the main classroom;

the teacher image acquisition equipment is used for acquiring teaching pictures of the teacher in the main classroom in real time and sending the teaching pictures of the teacher to the main classroom recording and broadcasting host;

each slave classroom recording and broadcasting host is also used for sending the slave classroom student pictures of the slave classroom where the slave classroom recording and broadcasting host is located to the master classroom recording and broadcasting host;

the master classroom recording and broadcasting host is also used for receiving the teacher teaching pictures sent by the teacher image acquisition equipment and the slave classroom student pictures sent by each slave classroom recording and broadcasting host; transmitting the teacher teaching picture, the slave classroom student pictures of each slave classroom and the master classroom student picture to the student state display device;

the student state display equipment is also used for receiving the teaching pictures of the teacher, the slave classroom student pictures of each slave classroom and the master classroom student pictures sent by the master classroom recording and broadcasting host; and displaying at least one of the teacher teaching picture, the master classroom student picture and the slave classroom student pictures of the slave classrooms.

The embodiment of the invention has the following beneficial effects:

by applying the scheme provided by the embodiment of the invention, the first student image acquisition equipment in each slave classroom can acquire the slave classroom student pictures of the slave classroom where the first student image acquisition equipment is positioned in real time in the teaching process. Therefore, the slave classroom recording and broadcasting host of the slave classroom can determine the slave classroom behavior data of the slave classroom according to the slave classroom student pictures and transmit the determined slave classroom behavior data to the server; the server may then send the slave classroom behavior data for each slave classroom to a master classroom recording and broadcasting host in the master classroom. Therefore, the master classroom recording and broadcasting host can receive the slave classroom behavior data of each slave classroom sent by the server, and further, the student state display equipment arranged in the master classroom can obtain the slave classroom behavior data of each slave classroom from the master classroom recording and broadcasting host and display the slave classroom behavior data of each slave classroom.

Based on this, in the embodiment of the present invention, the student status display device provided in the master classroom can display the slave classroom behavior data of each slave classroom during lecture. Since the slave classroom behavior data of each slave classroom can represent the listening state of students in the slave classroom, the teacher can know the listening state of each student in the slave classroom through the slave classroom behavior data displayed by the checked student state display device.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of a multi-party interactive teaching system in the related art;

fig. 2 is a schematic structural diagram of a multi-party interactive teaching system according to an embodiment of the present invention;

fig. 3 is a schematic diagram illustrating a display manner of a student status display device for displaying data of classroom behaviors according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of another multi-party interactive teaching system according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of another multi-party interactive teaching system according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of another multi-party interactive teaching system according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a multi-party interactive teaching system in an embodiment of the present invention.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.

In the related art, since the multi-party interactive teaching system cannot provide the listening status of each student in the slave classroom during the course of lecture, the teacher cannot view the listening status of each student in the slave classroom.

In order to solve the above technical problem, an embodiment of the present invention provides a multi-party interactive teaching system. The multi-party interactive teaching system can be applied to any teaching scene with a master classroom and at least one slave classroom, in the teaching scene, a teacher gives lessons in the master classroom, and students in each slave classroom watch the teaching contents of the teacher through a teaching display screen arranged in the slave classroom.

Wherein the system comprises: the system comprises a server, a main classroom recording and broadcasting host and student state display equipment, wherein the main classroom recording and broadcasting host and the student state display equipment are arranged in a main classroom; the slave classroom recording and broadcasting host and the first student image acquisition equipment are arranged in each slave classroom;

As can be seen from the above, in the embodiment of the present invention, the student status display device provided in the master classroom can display the slave classroom behavior data of each slave classroom during the course of lecture. Since the slave classroom behavior data of each slave classroom can represent the listening state of students in the slave classroom, the teacher can know the listening state of each student in the slave classroom through the slave classroom behavior data displayed by the checked student state display device.

Hereinafter, a multi-party interactive teaching system provided by the embodiment of the present invention will be specifically described.

Fig. 2 is a schematic structural diagram of a multi-party interactive teaching system according to an embodiment of the present invention. As shown in fig. 2, the multi-party interactive teaching system includes: the server 230, the master classroom recording and broadcasting host 211 and the student status display device 212 provided in the master classroom, and the slave classroom recording and broadcasting host 221 and the first student image capture device 222 provided in each slave classroom.

Each slave classroom recording and broadcasting host 221, configured to determine slave classroom behavior data of a slave classroom in which the slave classroom recording and broadcasting host 221 is located based on slave classroom student pictures acquired in real time by the first student image acquisition device 222 of the slave classroom in which the slave classroom recording and broadcasting host 221 is located, and transmit the determined slave classroom behavior data to the server 230;

wherein the slave classroom behavior data for each slave classroom is used to characterize: the listening status of the students in the slave classroom.

A server 230 for receiving the slave classroom behavior data transmitted by each slave classroom recording and broadcasting host 221 and transmitting the slave classroom behavior data of each slave classroom to the master classroom recording and broadcasting host 211;

a master classroom recording and broadcasting host 211 for receiving the slave classroom behavior data of each slave classroom transmitted by the server 230;

and a student status display device 212 for obtaining the slave classroom behavior data of each slave classroom from the master classroom recording and broadcasting host 211 and displaying the slave classroom behavior data of each slave classroom 200.

During the course of the lecture, the first student image capture device 222 in each slave classroom can capture the slave classroom student pictures of the slave classroom in real time. Accordingly, the slave classroom recording and broadcasting host 221 in the slave classroom can determine slave classroom behavior data of the slave classroom based on the slave classroom student screen of the slave classroom and transmit the determined slave classroom behavior data to the server 230.

It is reasonable that each slave classroom recording and broadcasting host 221 can determine the slave classroom behavior data of the slave classroom in which the slave classroom recording and broadcasting host 221 is located in real time, or can periodically determine the slave classroom behavior data of the slave classroom in which the slave classroom recording and broadcasting host 221 is located according to a certain set period duration. Also, each slave classroom recording and broadcasting host 221 can determine the slave classroom behavior data of the slave classroom in which the slave classroom recording and broadcasting host 221 is located in various ways. For clarity, the manner in which each slave classroom recording and broadcasting host 221 determines slave classroom behavior data of the slave classroom in which the slave classroom recording and broadcasting host 221 is located will be illustrated later.

The server 230 may receive the slave classroom behavior data sent by each slave classroom recording host 221 and send the slave classroom behavior data for each slave classroom to the master classroom recording host 211 in the master classroom.

Further, the master classroom recording and broadcasting host 211 in the master classroom can receive the slave classroom behavior data of each slave classroom transmitted by the server 230. In this way, the student status display device 212 in the master classroom can obtain the slave classroom behavior data of each slave classroom from the master classroom recording and broadcasting host 211 and display the slave classroom behavior data of each slave classroom 200.

When the slave classroom recording and broadcasting host 221 in each slave classroom determines the slave classroom behavior data of the slave classroom in real time, the student status display device 212 can obtain the slave classroom behavior data of each slave classroom from the master classroom recording and broadcasting host 211 in real time, and can also obtain the slave classroom behavior data of each slave classroom from the master classroom recording and broadcasting host 211 periodically according to a certain set period duration;

when the slave classroom recording and broadcasting host 221 in each slave classroom periodically determines the slave classroom behavior data of the slave classroom, the student status display device 212 can periodically obtain the slave classroom behavior data of each slave classroom from the master classroom recording and broadcasting host 211 according to a certain set period duration; the period duration of each slave classroom behavior data obtained by the student status display device 212 may be an integral multiple of the period duration of each slave classroom recording and broadcasting host 221 determined slave classroom behavior data.

Further, the student status display device 212 may display the slave classroom behavior data of each slave classroom in various preset display manners after obtaining the slave classroom behavior data of each slave classroom.

For example, the slave classroom behavior data of each slave classroom can be displayed in the form of a table, illustratively as shown in the following table:

classroom identification from classroom	From classroomBehavioral data
		1	50％
2	70％
		3	66％

For another example, the slave classroom behavior data of each slave classroom can be displayed by means of color bars; wherein different colors in the color bar represent slave classroom behavior data that are within different data ranges. This is all reasonable.

As shown in fig. 3, a color bar is displayed from the classroom behavior data, wherein the light and dark of the gray scale represents that the data from the classroom is in different data ranges, for example, the darkest gray scale represents that the data from the classroom is not less than 80%, the second darker gray scale represents that the data from the classroom is less than 80%, and not less than 60%; the lightest grayscale representation is less than 60% from classroom behavior data. And the length of the color bar corresponds to the total teaching time of the course, the starting point of the color bar corresponds to the starting time of the course, and the end point of the color bar corresponds to the ending time of the course. In this way, the color change in the color bar can represent the change of the slave classroom behavior data of the slave classroom, i.e. the change of the listening state of the student in the slave classroom, during the course of the course.

In addition, optionally, the student status display device 212 may be any electronic device with a display screen, such as a tablet computer, a mobile phone, and the like. This is all reasonable.

Next, a description will be given of a manner in which each slave classroom recording/broadcasting host 221 determines slave classroom behavior data of a slave classroom in which the slave classroom recording/broadcasting host 221 is located.

In the embodiment of the present invention, each slave classroom recording and broadcasting host 221 can determine the slave classroom behavior data of the slave classroom in which it is located in two ways.

The first mode is as follows: each slave classroom recording and broadcasting host 221 is specifically configured to: receiving the pictures of the students in the classroom, which are acquired in real time by the first student image acquisition device 222 of the classroom where the slave classroom recording and broadcasting host 221 is located; calculating a first head-up rate of each first preset period according to a first preset period duration based on the received slave classroom student pictures as slave classroom behavior data of a slave classroom in which the slave classroom recording and broadcasting host 221 is located; and transmits the determined slave classroom behavior data to the server 230.

In this particular implementation, the first student image capture device 222 in each slave classroom can capture the slave classroom student picture of the slave classroom in real time and send the slave classroom student picture to the slave classroom recording and broadcasting host 221 in the slave classroom.

In this way, the slave classroom recording and broadcasting host 221 in each slave classroom can receive the slave classroom student pictures acquired by the first student image acquisition device 222 in the slave classroom in real time, and calculate the first head lifting rate of each first preset period according to the first preset period duration based on the received slave classroom student pictures as slave classroom behavior data of the slave classroom.

Optionally, in a specific implementation manner, in the first preset period duration, the slave classroom recording and broadcasting host 221 can receive a plurality of slave classroom student pictures sent by the first student image acquisition device 222 in the classroom from the slave classroom where the slave classroom recording and broadcasting host 221 is located, so that for each slave classroom student picture, the slave classroom recording and broadcasting host 221 can determine the head raising rate corresponding to the slave classroom student picture by performing behavior analysis on students in the slave classroom student pictures, and further can obtain a plurality of head raising rates in the first preset period duration. That is, during the first preset period of time, the slave classroom recording host 221 can determine a plurality of head lift rates from the classroom student view based on the plurality of instants captured by the first student image capture device 222. Furthermore, the classroom recording and broadcasting host 221 can calculate an average value of the determined multiple head lifting rates within the first preset period duration, and use the average value as the first head lifting rate of each first preset period.

Wherein, the raising rate corresponding to a picture of a student in a classroom refers to: the proportion of the students in the new-head state among the students in the classroom student picture.

For example, behaviors of playing a mobile phone, reading, writing and lying on a desk are taken as a low head event, and then, behavior analysis is performed on students in each classroom student picture to determine confidence degrees of the students respectively aiming at the four low head events, so that when the confidence degree of at least one low head event of the students is not less than a preset confidence degree threshold value of the low head event, the students can be determined to be in a low head state; furthermore, when the confidence degrees of the student respectively aiming at the four head lowering events are smaller than the preset confidence degree threshold value of each head lowering event, the student can be determined to be in the head raising state. Therefore, the proportion of the students in the head-up state in all the students in the classroom is calculated, and the proportion is the head-up rate.

For another example, behaviors of looking at the teaching display screen and lifting hands are taken as head-up events, and further, behavior analysis is performed on students in each classroom student picture to determine confidence degrees of the students respectively aiming at the two head-up events, so that when the confidence degree of at least one head-up event of the students is not less than a preset confidence degree threshold value of the head-up event, the students can be determined to be in a head-up state. Therefore, the proportion of the students in the head-up state in all the students in the classroom is calculated, and the proportion is the head-up rate.

Of course, in practical applications, other events may also be regarded as a head-down event or a head-up event, and the embodiment of the present invention is not limited specifically.

Furthermore, after determining the first head-up rate for each first preset period, the slave classroom recording and broadcasting host 221 in each slave classroom can send the first head-up rate to the server 130 as slave classroom behavior data of the slave classroom in which the slave classroom recording and broadcasting host 221 is located.

The second mode is as follows: each first student image capture device 222 is specifically configured to: acquiring the slave classroom student pictures of the slave classroom in which the first student image acquisition device 222 is located in real time; calculating a second head lifting rate of each second preset period according to the second preset period duration based on the collected images of the students in the classroom; transmitting the acquired student pictures and the calculated second head-up rate to the slave classroom recording and broadcasting host 221 in which the first student image acquisition device 222 is located;

each slave classroom recording and broadcasting host 221 is specifically configured to: receiving the slave classroom student picture and the second head-up rate sent by the first student image acquisition device 222 of the slave classroom in which the slave classroom recording and broadcasting host 221 is located, calculating a third head-up rate for each third preset period as slave classroom behavior data of the slave classroom in which the slave classroom recording and broadcasting host 221 is located, and sending the calculated slave classroom behavior data to the server 130;

and the third preset period duration is integral multiple of the second preset period duration.

In this specific implementation manner, each first student image capture device 222 may be provided with a functional module for supporting the head-up rate calculation. Thus, after the first student image capturing device 222 in each slave classroom captures the slave classroom student pictures of the slave classroom in real time, the second head lifting rate of each second preset period can be calculated according to the second preset period duration directly based on the captured slave classroom student pictures.

Optionally, in a specific implementation manner, in the second preset period duration, each first student image capture device 222 may capture a plurality of slave classroom student pictures of the slave classroom where the first student image capture device 222 is located, so that the first student image capture device 222 may determine the head-up rate corresponding to each slave classroom student picture by performing behavior analysis on the captured students in each slave classroom student picture, and further, may obtain the plurality of head-up rates in the second preset period duration. That is, the first student image capture device 222 may determine a plurality of lift rates from the classroom student view based on the captured plurality of instants within the second preset period duration. In this way, the first student image capture device 222 may calculate an average value of the plurality of head lifting rates determined during the second preset period duration, and use the average value as the second head lifting rate for each second preset period.

Furthermore, after calculating the second heading rate for each second preset period, each first student image capturing device 222 may send each of the captured images of the students in the classroom and the calculated second heading rate to the slave classroom recording and broadcasting host 221 in the classroom.

In this way, each slave classroom recording host 221 can receive the respective slave classroom student picture and the respective second heading rate sent from the first student image capture device 222 in the classroom in which it is located. Therefore, each slave classroom recording and broadcasting host 221 can calculate the third head lifting rate of each third preset period by using the received second head lifting rates.

Optionally, in a specific implementation manner, each slave classroom recording and broadcasting host 221 may calculate an average value of the second head lifting rates received within each third preset period duration to obtain the third head lifting rate of the third preset period.

Furthermore, after determining the third head-up rate for each third preset period, each slave classroom recording and broadcasting host 221 can send the third head-up rate to the server 130 as slave classroom behavior data of the slave classroom in which the slave classroom recording and broadcasting host 221 is located.

Since the third preset period duration is an integral multiple of the second preset period duration, the third head-up rate determined by each slave classroom recording and broadcasting host 221 may be determined based on a plurality of second head-up rates, that is, the slave classroom behavior data of the slave classroom in which the slave classroom recording and broadcasting host 221 is located, which is obtained by each slave classroom recording and broadcasting host 221, is determined based on a plurality of head-up rates, and the slave classroom behavior data may reflect the behavior of the student in the slave classroom in which the slave classroom recording and broadcasting host 221 is located within a plurality of second preset period durations, so that the behavior of the student in the slave classroom may be known globally in a larger time range.

In addition, the above-mentioned slave classroom behavior data may include, in addition to the above-mentioned heading rate: reading rate, writing rate and other various behavior data, namely, the class listening state of students in a classroom can be represented by the reading rate, the writing rate and other various behavior data. Wherein, the reading rate refers to: the writing rate, which is the ratio of students in a reading state among students in a classroom student picture, is: the proportion of students in writing state is the proportion of students in the classroom student picture.

The method for determining the reading rate and the writing rate of each slave classroom by each slave classroom recording and broadcasting host 221 is similar to the first mode and the second mode, and the method for determining the first heading rate and the third heading rate of each slave classroom by each slave classroom recording and broadcasting host 221 is not described herein again.

It will be appreciated that during the course of a lecture, the teacher may interact with the students in each classroom, for example, to ask questions and the like. The number of interactions between the teacher and the students in each classroom can reflect the listening status of the students in each classroom to a certain extent, so that the teacher hopes to see the number of interactions with each slave classroom during teaching.

Based on this, optionally, in a specific implementation manner, the manner of displaying the number of interactions of each slave classroom and/or the total number of interactions of each slave classroom by the student status display device 212 is as follows:

the master classroom recording and broadcasting host 211 is further configured to add 1 to the recorded number of interactions in any slave classroom when receiving an interaction start instruction for the slave classroom;

the student status display device 212 is further configured to obtain the number of interactions in each slave classroom from the master classroom recording and broadcasting host 211, and display the number of interactions in each slave classroom and/or the total number of interactions in each slave classroom.

In this specific implementation manner, in order to count the number of interactions between the teacher and each of the students in the slave classroom, the teacher may send an interaction start instruction for a slave classroom to the master classroom recording and broadcasting host 211 each time the teacher interacts with a student in a certain slave classroom.

The master classroom recording and broadcasting host 211 can send an interactive start instruction for any slave classroom through various ways, which is not limited in the embodiments of the present invention.

For example, an interactive start button may be provided in the display interface of the student status display device 212. In this way, when the teacher determines to interact with a student in a slave classroom, the teacher may click on the interaction start button provided in the display interface of the student status display device 212, and click on the classroom identifier of the selected slave classroom, for example, the classroom number of the slave classroom, in the interface displaying the classroom identifiers of the slave classrooms. Thus, the student status display device 212 can send an interactive opening instruction for the slave classroom to the master classroom recording and broadcasting host 211.

For another example, a table of seating orders for each slave classroom may be displayed in the display interface of the student status display device 212. When the teacher determines to interact with a student in a slave classroom, the teacher may click on the student's identification, e.g., the student's name, of the student in the displayed seating chart. Thus, the student status display device 212 can determine the slave classroom in which the student is located, and send an interaction start instruction for the slave classroom to the master classroom recording and broadcasting host 211.

Thus, the master classroom recording and broadcasting host 211 can receive an interaction start instruction for any slave classroom, and when receiving the interaction start instruction for any slave classroom, the master classroom recording and broadcasting host 211 can first determine the slave classroom indicated by the interaction start instruction, and then can add 1 to the recorded interaction times of the slave classroom.

Based on this, the student status display device 212 can obtain the number of interactions in each slave classroom from the master classroom recording and broadcasting host 211, and after obtaining the number of interactions in each slave classroom, the student status display device 212 can only display the number of interactions in each slave classroom, can also calculate the sum of the number of interactions in each slave classroom to obtain the total number of interactions in each slave classroom, and only display the total number of interactions, and can also simultaneously display the number of interactions in each slave classroom and the total number of interactions in each slave classroom. This is all reasonable.

The student status display device 212 may obtain the number of interactions in each slave classroom from the master classroom recording and broadcasting host 211 in real time, or may periodically obtain the number of interactions in each slave classroom from the master classroom recording and broadcasting host 211 according to a certain set period duration. Also, the student status display device 212 may display the number of interactions in each slave classroom and/or the total number of interactions in each slave classroom in various preset manners.

For example, the number of interactions from each classroom may be displayed in the form of a table; it is also reasonable, for example, that the number of interactions from each classroom can be displayed in the form of a line graph.

Obviously, in this specific implementation manner, the student status display device 212 may simultaneously display the slave classroom behavior data of each slave classroom and the number of interactions of each slave classroom; alternatively, the slave classroom behavior data of each slave classroom and the total number of interactions of each slave classroom can be displayed simultaneously; alternatively, the slave classroom behavior data of each slave classroom, the number of interactions of each slave classroom, and the total number of interactions of each slave classroom may be displayed simultaneously.

Optionally, in another specific implementation manner, the manner in which the student status display device 212 displays the number of interactions in each slave classroom and/or the total number of interactions in each slave classroom is as follows:

a student status display device 212 for displaying the recorded number of interactions of each slave classroom and/or the total number of interactions of each slave classroom in real time; and when the interaction starting instruction aiming at any slave classroom is acquired, adding 1 to the recorded number of the slave classroom interactions, and displaying the updated number of the slave classroom interactions and/or the total number of the slave classroom interactions.

In this embodiment, the number of interactions in each slave classroom may be recorded in the student status display device 212, and then the student status display device 212 may display the recorded number of interactions in each slave classroom and/or the total number of interactions in each slave classroom in real time. When the interaction start instruction for any slave classroom is acquired, the student state display device 212 may add 1 to the recorded number of interactions in the slave classroom, so that the student state display device 212 may update the currently displayed number of interactions in each slave classroom and/or the total number of interactions in each slave classroom to display the updated number of interactions in each slave classroom and/or the updated total number of interactions in each slave classroom.

The student status display device 212 may obtain an interactive start instruction for any slave classroom in various ways, which is not limited in the embodiments of the present invention.

For example, an interactive start button may be provided in the display interface of the student status display device 212. In this way, when the teacher determines to interact with a student in a slave classroom, the teacher may click on the interaction start button provided in the display interface of the student status display device 212, and click on the classroom identifier of the selected slave classroom, for example, the classroom number of the slave classroom, in the interface displaying the classroom identifiers of the slave classrooms. In this way, the student status display device 212 can acquire the interactive opening instruction for the slave classroom.

For another example, a table of seating orders for each slave classroom may be displayed in the display interface of the student status display device 212. When the teacher determines to interact with a student in a slave classroom, the teacher may click on the student's identification, e.g., the student's name, of the student in the displayed seating chart. In this way, the student status display device 212 can determine the slave classroom in which the student is located, and further acquire the interaction start instruction for the slave classroom.

It can be understood that, in the course of teaching, when the teacher asks questions to the student, the time length of answering the questions by the student can reflect the student's state of listening to lessons to a certain extent, for example, when the student can answer the questions faster, it can be said that the student's state of listening to lessons is better; when the student needs a long time to answer the question, the student can be shown to have a poor lecture listening state. Therefore, during the course of a lecture, the teacher may wish to further view the duration of the interaction with each student in the slave classroom. The interactive duration of the teacher interacting with each student in the slave classroom can be simply referred to as: the duration of the interaction between the various slave classrooms.

Based on this, optionally, in a specific implementation manner, the manner that the student status display device 212 displays the interaction duration of each slave classroom and/or the interaction total duration of each slave classroom is as follows:

the master classroom recording and broadcasting host 211 is further configured to, when receiving an interaction end instruction for any slave classroom, determine a duration between times when the first interaction start instruction and the interaction end instruction are received, as a first interaction duration, and update the interaction duration of the slave classroom as: the sum of the recorded interaction duration of the slave classroom and the first interaction duration;

wherein, the first interaction opening instruction is as follows: before the interaction ending instruction, an interaction starting instruction aiming at the slave classroom is received for the last time;

the student status display device 212 is further configured to obtain the interaction duration of each slave classroom from the master classroom recording and broadcasting host 211, and display the interaction duration of each slave classroom and/or the total interaction duration of each slave classroom.

In this embodiment, in order to count the interaction duration of each slave classroom, the teacher may send an interaction end instruction for a slave classroom to the master classroom recording and broadcasting host 211 each time the teacher finishes interacting with a student in a slave classroom.

The teacher may send an interaction ending instruction for any slave classroom to the master classroom recording and broadcasting host 211 in various ways, which is not limited in the embodiments of the present invention.

For example, an interaction start button and an interaction end button may be disposed in the display interface of the student status display device 212, and when the teacher determines to interact with a student in a certain slave classroom, the teacher may click the interaction start button disposed in the display interface of the student status display device 212, and click the classroom identifier of the selected slave classroom in the interface displaying the classroom identifiers of the slave classrooms. Further, when the teacher determines to end the interaction with a student in a certain slave classroom, the teacher may click an interaction end button provided in the display interface of the student status display apparatus 212. In this way, the student status display device 212 can determine the classroom identifier of the selected slave classroom when the teacher last clicked the displayed interaction start button before the teacher clicked the interaction end button, and thus, the student status display device 212 can send the interaction end instruction for the slave classroom to the master classroom recording and broadcasting host 211.

For another example, a table of seating orders for each slave classroom may be displayed in the display interface of the student status display device 212. When the teacher determines to interact with a student in a slave classroom, the teacher may click on the student identification of the student in the displayed seating schedule. And when the teacher determines to end the interaction with the student, the teacher may click the student identity of the student again in the displayed seating chart. In this way, the student status display device 212 may first determine that the teacher has clicked the student identifier of the student twice in succession, and then the student status display device 212 may determine the slave classroom in which the student is located, and send an interaction end instruction for the slave classroom to the master classroom recording and broadcasting host 211.

In this way, the master classroom recording and broadcasting host 211 can receive an interaction ending instruction for any slave classroom, and when receiving the interaction ending instruction for any slave classroom, the master classroom recording and broadcasting host 211 can first determine the time when the interaction starting instruction for the slave classroom is received last before the interaction ending instruction, that is, the time when the first interaction starting instruction is received.

Further, the main studio recording and broadcasting host 211 can determine the time length between the time when the first interaction start command and the interaction end command are received. Obviously, the time length is the interaction time length between the teacher and the students in the slave classroom during the interaction. Therefore, the master classroom recording and broadcasting host 211 can use the time length as the first interactive time length, and update the interactive time length of the slave classroom as: the sum of the recorded interaction time length of the slave classroom and the first interaction time length.

That is, the interaction duration of each time the teacher interacts with the slave classroom can be determined by determining the duration between the times when the interaction start instruction and the interaction end instruction for the same slave classroom are continuously received, and further, the interaction duration of the slave classroom can be determined by calculating the sum of the interaction durations of each time the teacher interacts with the slave classroom.

It should be noted that the interaction duration of each slave classroom recorded in the master classroom recording and broadcasting host 211 is: and the interaction duration of each slave classroom in the time period between the starting time of the course and the current time.

For example, an interaction start button and an interaction end button may be disposed in the display interface of the student status display device 212, and when the teacher determines to interact with students in a certain slave classroom, the teacher may click the interaction start button disposed in the display interface of the student status display device 212 and click the classroom identifier of the selected slave classroom in the interface displaying the classroom identifiers of the slave classrooms, so that an interaction start instruction for the slave classroom may be sent to the master classroom recording and broadcasting host 211. Further, when the teacher determines to end the interaction with the students in a certain slave classroom, the teacher may click an interaction end button provided in the display interface of the student status display device 212, and thus, an interaction end instruction for the slave classroom may be transmitted to the master classroom recording and broadcasting host 211.

Obviously, when the master classroom recording and broadcasting host 211 receives the interaction ending instruction, and the interaction starting instruction is the first starting instruction, the master classroom recording and broadcasting host 211 can determine the time length between the times when the interaction starting instruction and the interaction ending instruction are received, and update the interaction time length of the slave classroom as: the recorded interaction time length of the slave classroom and the sum of the time length. That is, each time the teacher interacts with the slave classroom for a period of time: the time length between the time when the teacher continuously clicks the interaction start button and the interaction end button.

For another example, a table of seating orders for each slave classroom may be displayed in the display interface of the student status display device 212. When the teacher determines to interact with a student in a slave classroom, the teacher can click the student identifier of the student in the displayed seating chart, and thus, an interaction start instruction for the slave classroom can be sent to the master classroom recording and broadcasting host 211. And when the teacher determines to end the interaction with the student, the teacher may click the student identity of the student again in the displayed seating chart. Thus, the student status display device 212 can first determine that the teacher has clicked the student identifier of the student twice in succession, and can thus send an interaction end instruction for the classroom to the master classroom recording and broadcasting host 211. Further, the student status display device 212 may determine the slave classroom in which the student is located, and transmit an interaction end instruction for the slave classroom to the master classroom recording and broadcasting host 211.

Obviously, when the master classroom recording and broadcasting host 211 receives the interaction ending instruction, and the interaction starting instruction is the first starting instruction, the master classroom recording and broadcasting host 211 can determine the time length between the times when the interaction starting instruction and the interaction ending instruction are received, and update the interaction time length of the slave classroom as: the recorded interaction time length of the slave classroom and the sum of the time length. That is, each time the teacher interacts with the slave classroom for a period of time: the time between the time when the teacher clicks the student identity of the same student twice in succession.

Thus, the master classroom recording and broadcasting host 211 can record the interaction duration of each slave classroom, so the student status display device 212 can obtain the interaction duration of each slave classroom from the master classroom recording and broadcasting host 211, and after obtaining the interaction duration of each slave classroom, the student status display device 212 can only display the interaction duration of each slave classroom, can also calculate the interaction duration and value of each slave classroom, obtain the interaction total duration of each slave classroom, and only display the interaction total duration, and can also simultaneously display the interaction duration of each slave classroom and the interaction total duration of each slave classroom. This is all reasonable.

The student status display device 212 may obtain the interaction duration of each slave classroom from the master classroom recording and broadcasting host 211 in real time, or may periodically obtain the interaction duration of each slave classroom from the master classroom recording and broadcasting host 211 according to a certain set period duration. And the interaction duration of each slave classroom and/or the total interaction duration of each slave classroom can be displayed in various preset modes.

For example, the interaction duration of each slave classroom can be displayed in the form of a table; for another example, the interaction duration of each slave classroom may be displayed in the form of a line graph. This is all reasonable.

Obviously, in this particular implementation, there may be a variety of display scenarios for the student status display device 212, as shown in the following table:

it will be appreciated that when a teacher interacts with a student in the main classroom, the teacher may look at the student and encourage the student by facial expressions such as smiling to increase the teacher's sense of closeness. Therefore, when the teacher interacts with the students in the slave classrooms, the face of the teacher may face an image capturing device disposed in the master classroom and used for capturing the face image of the teacher, and the image capturing device may capture the face image of the teacher and display the face image to the students in the slave classrooms through the master classroom recording and broadcasting host 211, the server 230 and the slave classroom recording and broadcasting host 221 in the slave classrooms, so as to increase the affinity of the teacher to the students in the slave classrooms during the interaction between the teacher and the students in the slave classrooms.

Based on this, optionally, in a specific implementation manner, as shown in fig. 4, the multi-party interactive teaching system provided in the embodiment of the present invention may further include: an auxiliary image capturing device 213 which is provided in the main classroom and has a fixed shooting angle; furthermore, the student status display device 212 displays the total duration of the interaction in the following manner:

the auxiliary image acquisition device 213 is used for acquiring the main classroom picture in the acquisition range corresponding to the shooting angle and sending the acquired main classroom picture to the main classroom recording and broadcasting host 211;

the main classroom recording and broadcasting host 211 is further configured to receive a main classroom picture, and detect whether a human face image meeting preset interaction conditions of a teacher exists in the main classroom picture; when the face image is detected, determining the duration of continuously detecting the face image, and updating the total interaction duration of each slave classroom into: the sum of the recorded total interaction time length of each slave classroom and the determined time length;

the student status display device 212 is further configured to obtain the total interaction duration from the main classroom recording and broadcasting host 211, and display the total interaction duration.

In the present embodiment, the auxiliary image capturing device 213, the photographing angle of which is fixed, may be provided in the main classroom. Further, since the photographing angle is fixed, the auxiliary image capturing device 213 can capture only the image of the main classroom within a fixed capturing range corresponding to the fixed photographing angle in the main classroom in real time. And, the master classroom image collected in real time is transmitted to the master classroom recording and broadcasting host 211.

Furthermore, in this particular implementation, when a teacher interacts with a student in a certain slave classroom, the teacher's face may be directed toward the auxiliary image capture device 213 so that the auxiliary image capture device 213 can capture the teacher's face image, and thus, the teacher's face image may be presented to the student in each slave classroom through the master classroom recording and broadcasting host 211, the server 230, and the slave classroom recording and broadcasting host 221 in each slave classroom.

For example, when the master classroom recording and broadcasting host 211 detects a face image of a teacher meeting a preset interaction condition in the received master classroom image, the face image can be sent to the server 230, and thus, after receiving the face image, the server 230 can send the master classroom image to the slave classroom recording and broadcasting host 221 in each slave classroom in a broadcasting manner and the like, so that the slave classroom recording and broadcasting host 221 in each classroom can display the master classroom image to the teaching display screen in the slave classroom, and students in each slave classroom can see the face image of the teacher meeting the preset interaction condition through the teaching display screen in the slave classroom.

It is apparent that when the teacher interacts with a student in a certain slave classroom, the teacher's face may be directed toward the auxiliary image capturing device 213, and thus, in the master classroom picture captured in real time by the auxiliary image capturing device 213, there may be a human face image of the teacher. Based on this, when the face image of the teacher satisfying the preset interaction condition exists in the picture of the master classroom acquired in real time by the auxiliary image acquisition device 213, it can be described that the teacher is interacting with the students in a certain slave classroom.

Thus, after receiving the main classroom image collected by the auxiliary image collecting device 213 in real time, the main classroom recording and broadcasting host 211 can detect whether a human face image meeting the preset interaction condition exists in the main classroom image. Moreover, when the face image is detected, the main classroom recording and broadcasting host 211 can determine the duration of continuous detection of the face image.

It is obvious that the determined duration of continuous detection of the face image is a duration in which the teacher's face is continuously facing the auxiliary image capturing device 213, that is, a duration of an interaction between the teacher and a student in a slave classroom.

Based on this, the master classroom recording and broadcasting host 211 can update the total interactive duration of each slave classroom to: the sum of the total recorded time duration of each interaction from the classroom and the determined time duration.

In this way, since the master classroom recording and broadcasting host 211 can record the total interaction duration of each slave classroom, the student status display device 212 can obtain the recorded total interaction duration of each slave classroom from the master classroom recording and broadcasting host 211, and after obtaining the total interaction duration of each slave classroom, the student status display device 212 can also display the total interaction duration of each slave classroom.

The student status display device 212 may obtain the total interaction duration of each slave classroom from the master classroom recording and broadcasting host 211 in real time, or may periodically obtain the total interaction duration of each slave classroom from the master classroom recording and broadcasting host 211 according to a certain set period duration. And the total interactive time length of each slave classroom can be displayed according to various preset modes.

For example, the display format in a certain preset display area is "total interactive duration: x minutes "; for another example, the total duration of the interaction between all the slave classrooms is displayed by using a line graph to show the change of the total duration of the interaction between the slave classrooms along the progress of the lecture. This is all reasonable.

Obviously, in this specific implementation, the student status display device 212 may only display the slave classroom behavior data of each slave classroom and the total interaction duration of each slave classroom; at least one of the number of interactions in each slave classroom, the total number of interactions in each slave classroom, and the duration of interactions in each slave classroom as determined in some embodiments above may also be displayed. This is all reasonable.

It can be understood that, for the master classroom, since the teacher gives lessons in the master classroom, the teacher often can visually check the lecture listening status of students in the master classroom, and thus master classroom behavior data of the master classroom may not be displayed through the student status display device 212. Wherein the primary classroom behavior data is used for representing the lecture listening state of students in the primary classroom.

However, in some cases, the teacher is likely to be unable to accurately view the listening status of the students in the main classroom, for example, when the main classroom is large and the number of students in the main classroom is large, and therefore, in these cases, the teacher often wants to be able to view at least one type of data among the main classroom behavior data of the main classroom, the number of interactions of the main classroom, and the duration of the interactions of the main classroom through the student status display device 212.

Based on this, optionally, in a specific manner, as shown in fig. 5, the multi-party interactive teaching system provided in the foregoing embodiment of the present invention may further include: the second student image capture device 214 disposed in the master classroom, the student status display device 212 displays the master classroom behavior data of the master classroom as follows:

the main classroom recording and broadcasting host 211 is further configured to determine main classroom behavior data of a main classroom based on the main classroom student pictures acquired by the second student image acquisition devices 214 in real time;

wherein the master classroom behavior data is used to characterize: the lecture listening state of students in the main classroom;

the student status display device 212 is also used for obtaining the master classroom behavior data from the master classroom recording and broadcasting host 211 and displaying the master classroom behavior data.

In this specific implementation manner, during the course giving process, the second student image capturing device 214 can capture the main classroom student picture of the main classroom in real time and send the captured main classroom student picture to the main classroom recording and broadcasting host 211.

Therefore, after receiving the picture of the main classroom student, the main classroom recording and broadcasting host 211 can determine the main classroom behavior data of the main classroom based on the picture of the main classroom student.

The master classroom recording and broadcasting host 211 can determine the master classroom behavior data of the master classroom in real time, and can also periodically determine the master classroom behavior data of the master classroom according to a certain set period duration, which is reasonable. Also, the master classroom recording and broadcasting host 211 can determine master classroom behavior data of the master classroom in a variety of ways. For clarity of behavior, the manner in which the master classroom recording host determines master classroom behavior data for the master classroom is illustrated later.

Thus, the student status display device 212 can acquire the above-mentioned master classroom behavior data from the master classroom recording and broadcasting host 211 and display the master classroom behavior data.

When the master classroom recording and broadcasting host 211 determines master classroom behavior data of a master classroom in real time, the student status display device 212 can obtain the master classroom behavior data of the master classroom from the master classroom recording and broadcasting host 211 in real time, and can also periodically obtain the master classroom behavior data of the master classroom from the master classroom recording and broadcasting host 211 according to a certain set cycle duration;

when the master classroom recording and broadcasting host 211 periodically determines the master classroom behavior data of the master classroom, the student status display device 212 can periodically obtain the master classroom behavior data of the master classroom from the master classroom recording and broadcasting host 211 according to a certain set period duration; the period duration of the master classroom behavior data obtained by the student status display device 212 may be an integral multiple of the period duration of the master classroom behavior data determined by the master classroom recording and broadcasting host 211.

In addition, the student status display device 212 may display the master classroom behavior data of the master classroom in various preset display modes after obtaining the master classroom behavior data of the master classroom.

For example, the master classroom behavior data of the master classroom may be displayed in the form of a table; for another example, the master classroom behavior data of the master classroom may be displayed in the form of color bars; wherein different colors in the color bar represent master classroom behavior data that is within different data ranges. This is all reasonable.

Obviously, in this specific implementation, the student status display device 212 can display the main classroom behavior data of the main classroom while displaying the content required to be displayed in each of the above specific implementations.

Next, an example of a method in which the master classroom recording and broadcasting host 211 specifies master classroom behavior data in the master classroom will be described.

In the embodiment of the present invention, the master classroom recording and broadcasting host 211 can determine the master classroom behavior data of the master classroom in two ways.

The first mode is as follows: the second student image capture device 214 can capture the main classroom student picture of the main classroom in real time and transmit the main classroom student picture to the main classroom recording and broadcasting host 211.

Thus, the master classroom recording and broadcasting host 211 can receive the master classroom student picture, and based on the received master classroom student picture, calculate the head lifting rate of each set period according to a certain set period duration, for example, the first preset period duration, as the master classroom behavior data.

The way of determining the head-up rate of each set period by the master classroom recording and broadcasting host 211 is similar to the way of determining the first head-up rate of each first preset period of the slave classroom in which each slave classroom recording and broadcasting host 221 is located, and details are not repeated here.

The second mode is as follows: a functional module supporting the head-up rate calculation may be disposed in the second student image capture device 214. In this way, the second student image capture device 214 can capture the master classroom student picture of the master classroom in real time; furthermore, the head raising rate of each set period can be calculated according to a certain set period duration, for example, the second preset period duration, directly based on the acquired master classroom student picture; the collected images of the students in the main classroom and the calculated head-up rate for each set period are transmitted to the main classroom recording and broadcasting host 211.

Thus, the master classroom recording and broadcasting host 211 can receive the master classroom student screen and the head-up rate for each set period, calculate the head-up rate for a set period, for example, the third preset period, and use the calculated head-up rate for a set period as master classroom behavior data.

The cycle duration when the master classroom recording and broadcasting host 211 determines the master classroom behavior data of the master classroom is an integral multiple of the cycle duration when the second student image acquisition device 214 determines each head lifting rate.

The manner in which the second student image capture device 214 determines each head lifting rate is similar to the manner in which each first student image capture device 222 calculates the second head lifting rate for each second preset period, and is not described herein again.

Further, optionally, in a specific manner, the student status display device 212 displays the number of interactions between the teacher and the students in the main classroom, that is, displays the number of interactions in the main classroom as follows:

the main classroom recording and broadcasting host 211 is further configured to detect whether a student in a standing state exists in a picture of a student in a main classroom, and add 1 to the recorded number of interaction times in the main classroom when the student in the standing state is detected; alternatively, the first and second electrodes may be,

the main classroom recording and broadcasting host 211 is further configured to add 1 to the recorded number of interactions in the main classroom when receiving an interaction start instruction for the main classroom; wherein the number of interactions in the main classroom is used to characterize: the number of interactions between the teacher and the students in the main classroom;

the student status display device 212 is further configured to obtain the number of interactions in the main classroom from the main classroom recording and broadcasting host 211, and display the number of interactions in the main classroom.

In this specific implementation manner, the master classroom recording and broadcasting host 211 can record the number of interactions between master classrooms in two ways.

In the first mode, the main classroom recording and broadcasting host 211 can detect whether there is a student in a standing state in the main classroom student picture after receiving the main classroom student picture of the main classroom collected by the second student image collecting device 214 in real time.

It can be appreciated that when a teacher interacts with a student, the student can stand up and change from a sitting position to a standing position. Therefore, when the master classroom recording and broadcasting host 211 detects that there is a student in a standing state in the master classroom student picture, the master classroom recording and broadcasting host 211 can determine that there is a student who is interacting with a teacher in the current master classroom, and thus the master classroom recording and broadcasting host can add 1 to the recorded number of interactions in the master classroom.

In the second way, in order to count the number of interactions in the main classroom, the teacher may send an interaction start instruction for the main classroom to the main classroom recording and broadcasting host 211 each time the teacher interacts with a student in the main classroom.

The manner of sending the interaction start instruction for the master classroom to the master classroom recording and broadcasting host 211 is similar to the manner of sending the interaction start instruction for any slave classroom to the master classroom recording and broadcasting host 211, and is not described herein again.

Like this, leading classroom recorded broadcast host 211 alright with receive the interactive start instruction to the main classroom to, when receiving the interactive start instruction to the main classroom, leading classroom recorded broadcast host 211 alright with the interactive number of times in the main classroom that records plus 1.

Based on this, the student status display device 212 can obtain the number of interactions in the main classroom from the main classroom recording and broadcasting host 211, and after obtaining the number of interactions in the main classroom, the student status display device 212 can display the number of interactions in the main classroom.

The student status display device 212 may obtain the number of interactions in the main classroom from the main classroom recording and broadcasting host 211 in real time, or may periodically obtain the number of interactions in the main classroom from the main classroom recording and broadcasting host 211 according to a certain set period duration. And the interaction times of the main classroom can be displayed according to various preset modes.

For example, the number of interactions in the main classroom may be displayed in the form of a table; for another example, the format "number of interactions in the main classroom: y times ", this is reasonable.

Obviously, in this specific implementation, the student status display device 212 may display the interaction times of the main classroom while displaying the content required to be displayed in each of the above specific implementations.

Optionally, when the student state display device 212 can obtain the number of interactions in the master classroom and the number of interactions in each slave classroom, the student state display device 212 may further determine a sum of the number of interactions in the master classroom and the number of interactions in each slave classroom, so as to display the sum, that is, the total number of interactions between the teacher and students in each classroom is displayed.

Optionally, in another specific implementation manner, the student status display device 212 displays the number of interactions between the teacher and the students in the main classroom, that is, the number of interactions in the main classroom is displayed as follows:

a student status display device 212 for displaying the recorded interaction times of the master classroom in real time; and when an interaction starting instruction for the main classroom is acquired, adding 1 to the recorded interaction times of the main classroom, and displaying the updated interaction times of the main classroom.

In this specific implementation, the student status display device 212 can record the interaction times of the master classroom, and then the student status display device 212 can display the recorded interaction times of the master classroom in real time. Moreover, when the interaction start instruction for the main classroom is acquired, the student state display device 212 may add 1 to the recorded number of interactions in the main classroom, so that the student state display device 212 may update the currently displayed number of interactions in the main classroom to display the updated number of interactions in the main classroom.

The manner in which the student status display device 212 acquires the interactive start instruction for the master classroom is similar to the manner in which the student status display device 212 acquires the interactive start instruction for any slave classroom, and is not described herein again.

Further, in order to enable the teacher to better know the learning status of the students in the main classroom through the student status display device 212, optionally, in a specific implementation manner, the student status display device 212 displays the interaction duration between the teacher and the students in the main classroom, that is, the interaction duration in the main classroom is displayed in the following manner:

the main classroom recording and broadcasting host 211 is further configured to determine the time length of the student in the standing state existing in the picture of the student in the main classroom when the student in the standing state is detected to disappear from the picture of the student in the main classroom, and update the interaction time length of the main classroom as follows: the sum of the recorded interaction time length of the main classroom and the determined time length; alternatively, the first and second electrodes may be,

the main classroom recording and broadcasting host 211 is further configured to determine, when receiving an interaction end instruction for the main classroom, a duration between times when a second interaction start instruction and the interaction end instruction are received, as a second interaction duration, and update the interaction duration of the main classroom as: the sum of the recorded interaction duration of the main classroom and the second interaction duration;

wherein, the second interactive opening instruction is: before the interaction ending instruction, an interaction starting instruction aiming at a main classroom is received for the last time;

the student status display device 212 is further configured to obtain the interaction duration of the main classroom from the main classroom recording and broadcasting host 211, and display the interaction duration of the main classroom.

In this specific implementation manner, the main classroom recording and broadcasting host 211 can record the interaction duration of the main classroom through two ways.

In the first mode, the main classroom recording and broadcasting host 211 can detect whether there is a student in a standing state in the main classroom student picture after receiving the main classroom student picture of the main classroom collected by the second student image collecting device 214 in real time. Further, when it is detected that a student in a standing state exists in the main classroom student screen, the main classroom recording and broadcasting host 211 can determine that a student interacting with a teacher exists in the current main classroom.

Thus, the main classroom recording and broadcasting host 211 can continue to detect whether the student in the standing state continuously exists in the subsequent main classroom student picture until detecting that the student in the standing state does not exist in the main classroom student picture, and determine the duration of the student in the standing state existing in the main classroom student picture, that is, determine the duration of the student in the standing state continuously detected in the main classroom student picture by the main classroom recording and broadcasting host 211.

Furthermore, the main classroom recording and broadcasting host 211 can update the interactive duration of the main classroom as: the recorded interaction time length of the master classroom and the determined sum of the time length of the student in the standing state in the picture of the student in the master classroom.

In the second way, in order to count the interaction duration of the main classroom, the teacher may send an interaction end instruction for the main classroom to the main classroom recording and broadcasting host 211 each time the teacher finishes interacting with the students in the main classroom.

The manner of sending the interaction ending instruction for the master classroom to the master classroom recording and broadcasting host 211 is similar to the manner of sending the interaction ending instruction for any slave classroom to the master classroom recording and broadcasting host 211, and is not described herein again.

Thus, the master classroom recording and broadcasting host 211 can receive the interaction ending instruction for the master classroom, and when receiving the interaction ending instruction for the master classroom, the master classroom recording and broadcasting host 211 can first determine the moment when the interaction starting instruction for the master classroom is received for the last time before the interaction ending instruction, that is, the moment when the second interaction starting instruction is received.

Further, the main studio recording and broadcasting host 211 can determine the time length between the time when the second interaction start command and the interaction end command are received. Obviously, the time length is the time length of the interaction between the teacher and the students in the primary classroom in the interaction process. Therefore, the main classroom recording and broadcasting host 211 can use the time length as the second interactive time length, and update the interactive time length of the main classroom as: the sum of the recorded interaction duration of the slave classroom and the second interaction duration.

That is, the interaction duration of each time the teacher and the main classroom can be determined by determining the duration between the times when the interaction start instruction and the interaction end instruction for the main classroom are continuously received, and further, the interaction duration of the main classroom can be determined by calculating the sum of the interaction durations of each time the teacher and the main classroom.

It should be noted that the interaction duration of the master classroom recorded in the master classroom recording and broadcasting host 211 is: the interaction duration of the main classroom in the time period between the starting time of the course and the current time.

Like this, because the main classroom recorded broadcast host 211 can record the interactive duration in the main classroom, consequently, student status display device 212 alright in order to obtain the interactive duration in the main classroom from main classroom recorded broadcast host 211 to, after obtaining the interactive duration in the main classroom, student status display device 212 alright in order to show the interactive duration in the main classroom.

The student status display device 212 can periodically obtain the interactive duration of the main classroom from the main classroom recording and broadcasting host 211 according to a certain set period duration. And the interaction duration of the main classroom can be displayed according to various preset modes.

For example, the interaction duration of each slave classroom can be displayed in the form of a table; for another example, the format may be displayed in a certain preset area as "the interaction duration of the main classroom: z minutes ", which is reasonable.

Obviously, in this specific implementation, the student status display device 212 may display the interaction duration of the main classroom while displaying the content required to be displayed in each of the above specific implementations.

Optionally, when the student state display device 212 can obtain the interaction duration of the master classroom and the interaction duration of each slave classroom, the student state display device 212 can further determine the sum of the interaction duration of the master classroom and the interaction duration of each slave classroom, so as to display the sum, that is, the total duration of the interactions between the teacher and the students in each classroom is displayed;

optionally, when the student status display device 212 can obtain the interaction duration of the master classroom and the total interaction duration of each slave classroom, the student status display device 212 can further determine the sum of the interaction duration of the master classroom and the total interaction duration of each slave classroom, so as to display the sum, that is, the total interaction duration of the teacher and the students in each classroom is displayed.

The student status display device 212 displays the above-mentioned various contents, in order to better display the situation of each classroom, so that the teacher can more intuitively view the listening status of students in each classroom, and can also display the picture of each classroom.

Based on this, optionally, in a specific implementation manner, as shown in fig. 6, the multi-party interactive teaching system provided by the above embodiment of the present invention may further include a teacher image capture device 215 disposed in the main classroom;

the teacher image acquisition device 215 is used for acquiring the teaching pictures of the teacher in the main classroom in real time and sending the teaching pictures of the teacher to the recording and broadcasting host in the main classroom;

each slave classroom recording and broadcasting host 221 is further configured to send, to the server 230, a slave classroom student picture of a slave classroom in which the slave classroom recording and broadcasting host 221 is located;

the server 230 is further configured to send the slave classroom student pictures of the respective slave classrooms to the master classroom recording and broadcasting host 211;

the master classroom recording and broadcasting host 211 is further configured to receive a teacher teaching picture sent by the teacher image collecting device 215 and slave classroom student pictures of each slave classroom sent by the server 230; transmitting a teacher teaching picture, slave classroom student pictures of the respective slave classrooms, and master classroom student pictures to the student status display device 212;

the student status display device 212 is further configured to receive a teacher teaching picture, a slave classroom student picture and a master classroom student picture of each slave classroom sent by the master classroom recording and broadcasting host 211; at least one of the teacher teaching picture, the master classroom student picture, and the slave classroom student pictures of the respective slave classrooms is displayed.

In this specific implementation manner, during the course of teaching, the teacher image collecting device 215 may collect a teacher teaching picture in real time and send the teacher teaching picture to the main classroom recording and broadcasting host 211.

In addition, the slave classroom recording and broadcasting host 221 of each slave classroom can transmit the slave classroom student pictures acquired in real time by the first student image acquisition device of the slave classroom in which the slave classroom recording and broadcasting host 221 is located to the server 230, and further, the server 230 can transmit the slave classroom student pictures of each slave classroom to the master classroom recording and broadcasting host 211 in the master classroom. In addition, the second student image capturing device 214 in the main classroom may also send the main classroom student picture captured in real time by the second student image capturing device 214 to the main classroom recording and broadcasting host 211.

That is, the master classroom recording and broadcasting host 211 can receive the teacher teaching picture transmitted by the teacher image capture device 215, the slave teacher student pictures of the respective slave classrooms transmitted by the server 230, and the master classroom student picture of the master classroom transmitted by the second student image capture device 214, that is, the master classroom recording and broadcasting host 211 can store therein the teacher teaching picture, the slave classroom student pictures of the respective slave classrooms, and the master classroom student picture of the master classroom.

In this way, the master classroom recording and broadcasting host 211 can transmit at least one of the stored teacher teaching picture, the slave classroom student pictures of the respective slave classrooms, and the master classroom student picture of the master classroom to the student status display device 212; thus, the student status display device 212 can receive at least one of the teacher teaching picture, the slave classroom student pictures of each slave classroom, and the master classroom student picture of the master classroom transmitted from the master classroom recording and broadcasting host 211, that is, the student status display device 212 can obtain at least one of the teacher teaching picture, the master classroom student picture, and the slave classroom student pictures of each slave classroom from the master classroom recording and broadcasting host 211 and display the obtained picture.

The student status display device 212 may obtain at least one of the teacher teaching picture, the master classroom student picture, and the slave classroom student pictures of each slave classroom from the master classroom recording and broadcasting host 211 in real time, or may periodically obtain at least one of the teacher teaching picture, the master classroom student picture, and the slave classroom student pictures of each slave classroom from the master classroom recording and broadcasting host 211 according to a certain set period duration. And, the obtained screen may be displayed in various preset manners.

Obviously, in this specific implementation, the student status display device 212 may display the obtained picture, which is at least one of a teacher teaching picture, a master classroom student picture, and a slave classroom student picture of each slave classroom, while displaying the content required to be displayed in each of the above specific implementations.

Optionally, in an embodiment of the present specific implementation manner, the master classroom recording and broadcasting host 211 can send the stored teacher teaching picture, the slave classroom student pictures of each slave classroom, and the master classroom student picture of the master classroom to the student status display device 212; thus, the student status display device 212 can receive the teacher teaching picture, the slave classroom student pictures of each slave classroom and the master classroom student picture of the master classroom sent by the master classroom recording and broadcasting host 211, that is, the student status display device 212 can obtain the teacher teaching picture, the master classroom student picture and the slave classroom student pictures of each slave classroom from the master classroom recording and broadcasting host 211. Further, the student status display device 212 may display at least one of a teacher teaching screen, a slave classroom student screen of each slave classroom, and a master classroom student screen of a master classroom based on a display instruction of a user.

It can be understood that, when a teacher gives a lesson, the multi-party interactive teaching system provided by the embodiment of the invention can start to be started, so that each device in the system starts to work. Accordingly, when the teaching of the teacher is finished, all the devices in the system can stop working.

Based on this, optionally, in a specific implementation,

the main classroom recording and broadcasting host 211 is further configured to store currently recorded course data about each classroom for the external device to read when a teaching end instruction is obtained;

wherein the course data of each classroom includes at least one type of data from the following data:

the slave classroom behavior data of each slave classroom, the interaction times of each slave classroom, the total interaction times of each slave classroom, the interaction duration of each slave classroom, the total interaction duration of each slave classroom, the master classroom behavior data, the interaction times of the master classroom and the interaction duration of the master classroom.

In this specific implementation manner, when the lecture is finished, the main classroom recording and broadcasting host 211 can acquire a lecture finishing instruction, and then the main classroom recording and broadcasting host 211 can store the currently recorded course data about each classroom.

It is reasonable that the master studio recording and broadcasting host 211 can store the course data in any specified storage space, for example, in a local storage space of the master studio recording and broadcasting host 211, in a database preset for the master studio recording and broadcasting host 211, and so on.

In addition, when the above-mentioned course data is stored, it is reasonable to store various kinds of course information, such as the name of a teacher giving lessons, the time of giving lessons, students listening to lessons, and the contents of giving lessons. A

Thus, after the course data is stored, the external device can read the course data after the course is finished, so that the course of the course can be further analyzed more carefully and deeply based on the course data.

Optionally, after the main classroom recording and broadcasting host 211 stores the currently recorded course data about each classroom, the main classroom recording and broadcasting host can zero the currently recorded and updatable course data about each classroom during the course of teaching.

Further, the above course data may include at least one type of data among the following data:

And, optionally, when there are the number of interactions between the master classroom and each slave classroom, the master classroom recording and broadcasting host 211 may further calculate a sum of the number of interactions between the master classroom and each slave classroom, and store the sum, that is, store the total number of interactions between the teacher and each classroom.

Optionally, when the interaction duration of the master classroom and the interaction duration of each slave classroom exist, the master classroom recording and broadcasting host 211 may further calculate a sum of the interaction duration of the master classroom and the interaction duration of each slave classroom, and store the sum, that is, store the total interaction duration of the teacher and each classroom.

In addition, in this specific implementation manner, the main classroom recording and broadcasting host 211 can obtain the instruction of ending the lecture through various manners, which is not limited in this embodiment of the present invention.

Optionally, in a specific implementation manner, the teacher may preset to perform the course appointment through a preset appointment device, and send the preset content to the main classroom recording and broadcasting host 211. Wherein, the preset content may include: the teaching start time and the teaching end time. Thus, when the lecture ending time is reached, the main classroom recording and broadcasting host 211 can automatically generate a lecture ending instruction and obtain the lecture ending instruction.

Optionally, in a specific implementation manner, a teaching all-in-one machine in communication connection with the master classroom recording and broadcasting host 211 may exist in the master classroom, and a teaching end button is provided on the teaching all-in-one machine. When the teacher determines that the teaching is finished, the teaching finishing button can be clicked, so that the teaching all-in-one machine can send a teaching finishing instruction to the main classroom recording and broadcasting host 211, and the main classroom recording and broadcasting host 211 can acquire the teaching finishing instruction.

Optionally, in a specific implementation manner, the main classroom recording and broadcasting host 211 can be provided with a teaching end button. When the teacher determines that the teaching is finished, the teacher can click the teaching finishing button, so that the main classroom recording and broadcasting host 211 can automatically generate a teaching finishing instruction and obtain the teaching finishing instruction.

Optionally, in a specific implementation manner, the multi-party interactive teaching system further includes a teaching platform, and the teaching platform may be provided with a teaching end button. When the teacher determines that the teaching is finished, the teacher can click the teaching finishing button, so that the teaching platform can send a teaching finishing instruction to the main classroom recording and broadcasting host 211, and the main classroom recording and broadcasting host 211 can acquire the teaching finishing instruction.

The teaching platform is used for managing recording and broadcasting hosts in all teachers and comprises a master classroom recording and broadcasting host 211 in a master classroom and slave classroom recording and broadcasting hosts 221 in all slave classrooms. The teaching platform can be used as an external device to acquire the course data about each classroom stored by the main classroom recording and broadcasting host 211, and can also acquire the student attendance data of each classroom. Furthermore, the teaching platform can be used for displaying and analyzing various acquired data, so that teaching evaluation can be performed after class.

Accordingly, in this specific implementation manner, the multi-party interactive teaching system may be started in various manners when the lecture starts, and for this, the embodiment of the present invention is not particularly limited.

Optionally, in a specific implementation manner, the teacher may perform the course appointment through a preset appointment device, for example, a teaching platform and the like included in the multi-party interactive teaching system, and send the preset content to the main classroom recording and broadcasting host 211. Wherein, the preset content may include: the teaching start time and the teaching end time.

When the starting time included in the lecture time is reached, the main classroom recording and broadcasting host 211 can initiate a course and send a lecture start message to the server 230; after receiving the lecture start message, the server 230 may send the lecture start message to the slave classroom recording and broadcasting host 221 in each of the existing slave classrooms, and further, each slave classroom recording and broadcasting host 221 may receive the lecture start message. In this way, at least one of the slave classroom recording and broadcasting hosts 221 can determine the course initiated by the joining master classroom recording and broadcasting host 211, so that the multi-party interactive teaching system can be started after the at least one slave classroom recording and broadcasting host 221 joins the course.

Optionally, in another specific implementation manner, the teacher may directly call the device through a preset recording host, for example, the teaching platform and the like included in the multi-party interactive teaching system determines the recording host of each classroom that needs to enter the same course, and sets the master classroom recording host of the master classroom and the slave classroom recording host of each slave classroom in the determined recording host. Therefore, after the setting is completed, the multi-party interactive teaching system can be started.

In order to better understand the solution provided by the embodiment of the present invention, a multi-party interactive teaching system provided by the embodiment of the present invention is illustrated below by a specific embodiment as shown in fig. 7.

As shown in fig. 7, in this embodiment, the main classroom is provided with: the teaching machine comprises a second student image acquisition device, a teacher image acquisition device, an auxiliary image acquisition device, a teaching all-in-one machine, a main classroom recording and broadcasting host, a student state display device and a student display screen; each slave classroom is provided with: the system comprises a first student image acquisition device, a teaching display screen and a slave classroom recording and broadcasting host; in a space provided by a third party, a server is provided.

Specifically, in the course of giving lessons, the teacher in the main classroom utilizes the teaching all-in-one machine to give lessons. The classroom can play contents such as a course PPT (Microsoft Office PowerPoint) and a teaching video through the teaching all-in-one machine. Further, the teach pendant may transmit the content to be played to the main studio recording and playing host, for example, the teach pendant may input the content to be played to the main studio recording and playing host in a VGA (Video Graphics Array), HDMI (High Definition Multimedia Interface), or the like.

The teacher image acquisition equipment acquires the teaching pictures of the teacher in real time and sends the teaching pictures of the teacher to the recording and broadcasting host computer in the main classroom.

And the main classroom recording and broadcasting host receives the content and the teacher teaching picture sent by the teaching all-in-one machine and sends the content and the teacher teaching picture to the server.

After receiving the content and the teaching pictures, the server can send the content and the teaching pictures to each slave classroom recording and broadcasting host.

Each slave classroom recording and broadcasting host computer receives the above-mentioned contents and teaching pictures of the teacher and sends them to the teaching display screen of the slave classroom.

And each teaching display screen receives the content and the teaching picture of the teacher and displays the content and the teaching picture of the teacher. That is, each teaching display screen can simultaneously display the content played by the teaching all-in-one machine in the main classroom and the teaching pictures of the teacher in the main classroom.

The first student image acquisition device of each slave classroom acquires the pictures of the slave classroom students of the slave classroom in real time, determines the head lifting rate per second based on the pictures of the slave classroom students, and transmits the acquired pictures of the slave classroom students and the determined head lifting rates to the slave classroom recording and broadcasting host of the slave classroom.

The method comprises the steps that each slave classroom recording and broadcasting host receives each slave classroom student picture and each determined head-lifting rate, sends each slave classroom student picture to a server, calculates the average head-lifting rate of each slave classroom per minute based on each received head-lifting rate, and sends each calculated average head-lifting rate to the server.

The server receives each secondary classroom student picture and each average head-lifting rate and sends each secondary classroom student picture and each average head-lifting rate to the master classroom recording and broadcasting host.

The master classroom recording and broadcasting host receives each slave classroom student picture and each average head lifting rate and sends each slave classroom student picture to the student display screen.

The student display screen receives each slave classroom student picture and displays each slave classroom student picture.

The second student image acquisition equipment acquires the pictures of the students in the main classroom in real time and sends the acquired pictures of the students in the main classroom to the main classroom recording and broadcasting host.

When the teacher asks a student in a slave classroom, the teacher may click on the interactive splash button displayed in the student status display device and click on the classroom identification of the slave classroom. And the student state display equipment sends an interactive starting instruction aiming at the slave classroom to the master classroom recording and broadcasting host according to the clicking operation of the teacher. And the main classroom recording and broadcasting host receives the interaction starting instruction and adds 1 to the recorded interaction times of the slave classrooms.

The shooting angle of the auxiliary image acquisition equipment is fixed, the main classroom pictures in the shooting range corresponding to the fixed shooting angle are acquired in real time, and the acquired main classroom pictures are sent to the main classroom recording and broadcasting host.

When the teacher asks a student in a certain slave classroom, the teacher's face may be directed toward the auxiliary image capturing device. The main classroom recording and broadcasting host receives each main classroom picture and detects whether a human face image meeting preset interaction conditions exists in each main classroom picture or not. And when the face image is detected, determining the duration of continuous detection of the face image, and updating the recorded total interaction duration of each slave classroom into: the sum of the recorded total duration of each interaction from the classroom and the determined duration.

The second student image acquisition device acquires images of the students in the main classroom in real time and determines the head lifting rate per second based on the images of the students in the main classroom. And sending the collected student pictures of each main classroom and the determined head raising rate to the main classroom recording and broadcasting host.

The main classroom recording and broadcasting host receives each main classroom student picture and each head lifting rate, and calculates the average head lifting rate per minute of the main classroom based on each received head lifting rate. And, whether there is a student in a standing state in each master classroom student image is detected.

When the students in the standing state are detected to exist, the recorded interaction times of the main classroom is added by 1 by the main classroom recording and broadcasting host. The main classroom recording and broadcasting host computer continuously detects whether the students in the standing state continuously exist in the follow-up main classroom student pictures, and when detecting that the students in the standing state disappear from the main classroom student pictures, the main classroom recording and broadcasting host computer determines the time length of the students in the standing state existing in the main classroom student pictures, and updates the recorded interaction time length of the main classroom into: the recorded interaction duration of the master classroom plus the determined duration.

Based on this, the main classroom recording and broadcasting host computer records: the slave classroom behavior data of each slave classroom, the interaction times of each slave classroom, the total interaction time length of each slave classroom, the slave classroom learning picture of each slave classroom, the master classroom behavior data of the master classroom, the interaction times of the master classroom, the interaction time length of the master classroom, the master classroom student picture of the master classroom and the teacher teaching picture.

The student state display device obtains the slave classroom behavior data of each slave classroom, the interaction times of each slave classroom, the total interaction time of each slave classroom, the slave classroom learning picture of each slave classroom, the master classroom behavior data of the master classroom, the interaction times of the master classroom, the interaction time of the master classroom and the teaching picture of a teacher from the master classroom recording and broadcasting host once per minute. The acquired pictures from the classroom and the pictures of teaching of the teacher are respectively pictures acquired by the first student image acquisition devices and the teacher teaching devices at the time closest to the current time.

In addition, when the teacher asks a student of a certain teacher, the master classroom recording and broadcasting host can determine a close-up image of the teacher based on the teaching image of the teacher, and determine the close-up image of the student to be asked from the master classroom student image or the slave classroom student image of the slave classroom indicated by the interactive start instruction according to the student in a standing state or the interactive start instruction existing in the detected master classroom student image; the close-up image of the teacher and the close-up image of the student being asked are sent to the student display screen.

The student display screen receives the close-up image of the instructor and the close-up image of the student being asked for, and displays the close-up image of the instructor and the close-up image of the student being asked for.

When the students to be asked are students in a main classroom, the main classroom recording host sends close-up images of teachers and the students to be asked to close-up images to the server, the server can send close-up images of teachers and the students to be asked to close-up images of the teachers and the students to be asked to the auxiliary classroom recording host, and the auxiliary classroom recording host receives close-up images of teachers and the students to be asked to close-up images of the teachers and the students to be asked to the teaching display screen of the auxiliary classroom.

The slave classroom student pictures of the slave classroom where the slave classroom is located can be transmitted to the server by each slave classroom recording and broadcasting host, so that the server can transmit the slave classroom student pictures of each slave classroom except the slave classroom where the slave classroom is located to each slave classroom recording and broadcasting host by broadcasting and the like. Thus, when the master classroom recording and broadcasting host receives an interaction opening instruction for any slave classroom, the close-up image of the teacher and the interaction opening instruction can be sent to the server. After receiving the interactive opening instruction, the server can send the close-up image of the teacher and the interactive opening instruction to each slave classroom recording and broadcasting host.

Each slave classroom recording host can determine the slave classroom where the student to be asked is located according to the interaction starting instruction after receiving the interaction starting instruction, thereby determining the close-up image of the student to be asked in the received slave classroom student picture, and sending the received close-up image of the teacher and the determined close-up image of the student to be asked to the teaching display screen of the slave classroom where the student to be asked is located. Each receives a close-up image of the teacher and a close-up image of the students being asked from a teaching display screen in the classroom, and displays the close-up images of the teacher and the close-up images of the students being asked.

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.

All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims

1. A multi-party interactive tutoring system, wherein the system comprises: the system comprises a server, a master classroom recording and broadcasting host and student state display equipment which are arranged in a master classroom, and a slave classroom recording and broadcasting host and first student image acquisition equipment which are arranged in each slave classroom;

2. The system of claim 1,

each slave classroom recording and broadcasting host is specifically used for: receiving the pictures of the students in the slave classroom, which are acquired in real time by a first student image acquisition device of the slave classroom where the slave classroom recording and broadcasting host is located; calculating a first head-up rate of each first preset period according to a first preset period duration based on the received slave classroom student pictures, wherein the first head-up rate is used as slave classroom behavior data of a slave classroom in which the slave classroom recording and broadcasting host is located; and transmitting the determined slave classroom behavior data to the server.

3. The system of claim 1,

each first student image acquisition device is specifically configured to: acquiring the slave classroom student pictures of the slave classroom in which the first student image acquisition equipment is positioned in real time; calculating a second head lifting rate of each second preset period according to the second preset period duration based on the collected images of the students in the classroom; transmitting the acquired images of the students in the classroom and the calculated second head lifting rate to a slave classroom recording and broadcasting host in which the first student image acquisition device is positioned;

4. The system of claim 1,

the master classroom recording and broadcasting host is further used for adding 1 to the recorded interaction times of any slave classroom when receiving an interaction starting instruction aiming at the slave classroom;

5. The system of claim 4,

the master classroom recording and broadcasting host is further used for determining the time length between the moment when the first interaction starting instruction and the interaction ending instruction are received when the interaction ending instruction aiming at any slave classroom is received, taking the time length as the first interaction time length, and updating the interaction time length of the slave classroom into: the sum of the recorded interaction duration of the slave classroom and the first interaction duration; wherein the first interaction starting instruction is as follows: before the interaction ending instruction, an interaction starting instruction aiming at the slave classroom is received for the last time;

6. The system of claim 1, further comprising: the auxiliary image acquisition equipment is arranged in the main classroom and has a fixed shooting angle;

7. The system of claim 1, further comprising: a second student image capture device disposed in the master classroom;

8. The system of claim 7,

the main classroom recording and broadcasting host is also used for detecting whether a student in a standing state exists in the main classroom student picture, and adding 1 to the recorded interaction times of the main classroom when the student in the standing state is detected;

9. The system of claim 8,

the main classroom recording and broadcasting host is further used for determining the time length of the students in the standing state in the main classroom student picture when the students in the standing state are detected to disappear in the main classroom student picture, and updating the interaction time length of the main classroom into: the sum of the recorded interaction time length of the main classroom and the determined time length;

10. The system of claim 9,

the main classroom recording and broadcasting host is also used for storing the currently recorded course data about each classroom for being read by external equipment when a teaching ending instruction is obtained;

11. The system of claim 9, further comprising: a teacher image capturing device provided in the main classroom;

each slave classroom recording and broadcasting host is also used for sending the pictures of the slave classroom students of the slave classroom in which the slave classroom recording and broadcasting host is positioned to the server;

the server is also used for sending the slave classroom pictures of each slave classroom to the master classroom recording and broadcasting host;

the master classroom recording and broadcasting host is also used for receiving the teacher teaching pictures sent by the teacher image acquisition equipment and the slave classroom student pictures of each slave classroom sent by the server; transmitting the teacher teaching picture, the slave classroom student pictures of each slave classroom and the master classroom student picture to the student state display device;

the student state display device is also used for receiving at least one of the teacher teaching picture, the slave classroom student picture of each slave classroom and the master classroom student picture sent by the master classroom recording and broadcasting host, and displaying the received picture.