WO2004029905A1 - 遠隔教育システム、受講確認方法および受講確認プログラム - Google Patents
遠隔教育システム、受講確認方法および受講確認プログラム Download PDFInfo
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- WO2004029905A1 WO2004029905A1 PCT/JP2003/012190 JP0312190W WO2004029905A1 WO 2004029905 A1 WO2004029905 A1 WO 2004029905A1 JP 0312190 W JP0312190 W JP 0312190W WO 2004029905 A1 WO2004029905 A1 WO 2004029905A1
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- requesting
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- 238000000034 method Methods 0.000 title claims description 78
- 230000009471 action Effects 0.000 claims abstract description 134
- 238000012790 confirmation Methods 0.000 claims abstract description 80
- 230000006854 communication Effects 0.000 claims abstract description 40
- 230000008859 change Effects 0.000 claims abstract description 39
- 238000004891 communication Methods 0.000 claims abstract description 38
- 238000001514 detection method Methods 0.000 claims abstract description 13
- 230000004044 response Effects 0.000 claims description 95
- 230000006870 function Effects 0.000 claims description 48
- 230000002452 interceptive effect Effects 0.000 claims description 2
- 238000012545 processing Methods 0.000 abstract description 24
- 230000007175 bidirectional communication Effects 0.000 abstract description 3
- 230000008569 process Effects 0.000 description 24
- 238000007726 management method Methods 0.000 description 17
- 238000010586 diagram Methods 0.000 description 6
- 125000002066 L-histidyl group Chemical group [H]N1C([H])=NC(C([H])([H])[C@](C(=O)[*])([H])N([H])[H])=C1[H] 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000605 extraction Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 238000012905 input function Methods 0.000 description 3
- 210000000887 face Anatomy 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241000227425 Pieris rapae crucivora Species 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 230000002747 voluntary effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
- G06Q50/10—Services
- G06Q50/20—Education
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
- G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
- G06F21/31—User authentication
- G06F21/32—User authentication using biometric data, e.g. fingerprints, iris scans or voiceprints
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B5/00—Electrically-operated educational appliances
- G09B5/06—Electrically-operated educational appliances with both visual and audible presentation of the material to be studied
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B7/00—Electrically-operated teaching apparatus or devices working with questions and answers
Definitions
- the present invention relates to a remote education system for performing remote education using two-way communication by multimedia including video and audio, and more particularly to a remote education system having an attendance confirmation function for confirming that a regular student is attending.
- Education system, attendance confirmation method and attendance confirmation program field
- distance learning systems will be recognized as formal education means, and in order for distance education to allow formal credits and qualifications to be recognized, it is necessary to accurately confirm the attendance of students. Is required.
- distance learning there are cases where one instructor handles a large number of students, and in which a student attends a programmed unmanned course on a voluntary basis.
- a confirmation method is required.
- an audiovisual authentication system described in, for example, WO 0-59226.
- the program provider presents a unique viewing confirmation code to the viewer with a unique evening timing, and the viewing confirmation code input by the viewer from the audiovisual terminal together with the input time is sent to the audiovisual authentication system.
- Communication and audiovisual authentication system The program determines that the viewer has actually viewed the program from the transmitted viewing confirmation code and the input time.
- a password authentication method in which the student inputs a pre-registered password, the student is asked to register personal information in advance.
- Question confirmation method for personal information to confirm questions Image matching method for acquiring images of students' faces, etc. and matching them with images of students' faces, etc. registered in advance, Acquiring students' voices and registering in advance A voice collation method that collates with the trainee's voice is considered.
- a regular student can teach a third party the password and personal information in advance, so that the third party can take the course on behalf of the third party.
- a student who has received a course confirmation request transmits a video of a regular student recorded in advance and a voice of a regular student recorded in advance from a terminal. It is possible for a third party to take the course.
- a main object of the present invention is to provide a distance learning system that can prevent a third party from taking a substitute course using a recorded video or the like in distance learning and confirm that a regular student is taking a course. It is. Disclosure of the invention
- a distance education system wherein in a distance education system that remotely performs education by means of multi-media interactive communication including video and audio, a student image acquisition means for acquiring a student image, Facial image collation means for collating the video acquired by the video acquisition means with the pre-registered student's face image, action request means for requesting the student for action, and acquisition by the student video acquisition means It has an action detecting means for detecting the student's action based on the change in the image of the trainee's image that has been selected, and has a function of confirming that the regular student has taken the course.
- the student image transmitted from the student terminal is acquired by the student image acquiring means, and the student image acquired by the face image collating means is collated with the previously registered student face image. You can confirm that the acquired video is a video of a regular student. Also, an action is requested by the action request means to the student, and the action detection means detects that the student has taken an action based on the image change of the acquired student's image. If a third party takes the role of a substitute student using pre-recorded video, etc., the image change corresponding to the action request does not occur. Can be confirmed.
- the action requested by the student by the action request means is as follows. Anything that causes an image change in the acquired video may be used. For example, the face may be moved, the eyes may be closed, the mouth may be moved, or the hand may be raised.
- a distance learning system is the distance learning system according to claim 1, wherein the action requesting means includes a function of requesting a movement of a face position, and the action detecting means includes a function of the student. It includes a function to detect that the position of the face has moved.
- the action requesting means requests the student to move the face position, and the action detecting means detects that the student has moved the face position based on the image change of the acquired video. If the trainee uses a prerecorded video, etc., to take a third person as a substitute, the position of the face does not change as instructed. You can confirm that you are doing.
- the distance education system is the distance education system according to claim 1 or claim 2, wherein the action requesting means includes a function of requesting a question from a student and requesting a voice response, and The detecting means includes a function of acquiring the student's voice, a function of recognizing the voice response from the acquired voice, a function of determining the validity of the student's voice answer from the recognized voice answer, and a function of the student's voice. And a function for detecting the movement of the student's mouth accompanying the voice response.
- the action requesting means Requesting the student to make a question and answering the voice by the action requesting means, acquiring the student's voice by the action detecting means, recognizing the voice answer, determining the validity of the student's voice answer, and However, since the movement of the learner's mouth accompanying the voice response is detected based on the change in the image of the acquired video, the learner who is determined to be a legitimate learner by the face image matching means makes a voice response to the question. Confirmed that regular students have taken the course Can be confirmed.
- a distance education system is the distance education system according to claim 3, wherein the action detection means includes a function of comparing a student's voice response with a pre-registered student's voice. .
- the student's voice response is compared with the pre-registered student's voice by the function detection means, the student must not only match the face image but also the voice, and the regular student must have attended. Can be confirmed more accurately.
- the distance learning system is the distance learning system according to claim 3 or claim 4, wherein the action requesting means has a function of asking a student about a time and requesting a voice response.
- the action detection means includes a function to determine the validity of the time when the student answered. A question about the time is given to the student by the action requesting means, the validity of the time answered by the student by the action detecting means is determined, and the movement of the student's mouth accompanying the voice response is obtained from the acquired video. Since the change is detected based on image changes, if a regular student uses a pre-recorded video, etc., to take a third party on his / her behalf, it is not possible to give a voice response at the requested time. You can see through and confirm that regular students have taken the course.
- a question about time may require that the current time be spoken, and the validity of the student's voice response is based on the time obtained by speech recognition of the student's voice response.
- the distance learning system according to claim 6 is the distance learning system according to any one of claims 3 to 5, wherein the action requesting means is related to the personal information of the student. Includes the ability to ask questions and request voice answers,
- the action detection means includes a function of comparing the personal information answered by the student with the personal information of the student registered in advance.
- the student asks a question regarding the student's personal information by the action requesting means, and the action detecting means checks the personal information answered by the student with the personal information of the student who has been registered in advance, and outputs the voice. Since the movement of the student's mouth due to the answer is detected based on the change in the image of the acquired video, a request is made if a regular student uses a pre-recorded video, etc., to take a third person on his / her behalf. Since it is not possible to give a voice response regarding the personal information of the trainee who was given, it is possible to find out that the student is taking the course on behalf of the student, and to confirm that the regular trainee is taking the course.
- a distance education system is the distance education system according to any one of claims 1 to 6, wherein the action detection means does not discontinuously change the position of the face image of the student. It has a function to determine
- the distance learning system is the distance learning system according to any one of claims 1 to 7, wherein the action detecting means requests the student to perform the action by the action requesting means. It has a function to determine that there has been an image change within a specified time after Thereby, if there is no predetermined image change within a predetermined time after requesting the action, it can be determined that a regular student has not attended. Also, even if the terminal can generate a video or the like corresponding to the action request, it is possible to prevent a student from taking the time to prepare such a video or the like on behalf of a legitimate student. It is possible to confirm with higher accuracy that the student has taken the course.
- a distance education system is the distance education system according to any one of claims 1 to 8, wherein the action request means requests the student to perform the action at an unpredictable timing. It has the function to perform.
- a distance education system is the distance education system according to any one of claims 1 to 9, wherein the action request means requests an action to the student according to a command from the instructor. It has the function to perform.
- the method for confirming attendance described in claim 11 is a method for confirming that a regular student is taking a course in distance learning, and includes the steps of acquiring an image of the student and registering the acquired image in advance. Collating with the learned student's face image, requesting the student to take action, and detecting the student's action based on a change in the image of the acquired video. And a top.
- the image of the student transmitted from the student terminal is acquired, and the image of the student acquired in the step of matching with the face image of the student registered in advance is registered in advance. Since the image is compared with the face image of the trainee, it is possible to confirm that the acquired video is a video of the legitimate trainee.
- the action is requested from the student in the step of requesting the action, and the action is detected by the step of detecting the action based on the change in the image of the acquired student's image. If a legitimate student uses a prerecorded video, etc., to take the role of a third party on his / her behalf, no image change corresponding to the action request occurs. You can confirm that you are attending.
- the action requested by the student in the step of requesting the action may be any action that causes an image change in the acquired video, such as moving the face, closing the eyes, and closing the mouth. You may move your hands or raise your hands.
- the method for confirming attendance described in claim 12 is the method for confirming attendance described in claim 11, wherein the step of requesting an action includes the step of requesting movement of a face position, and detecting the action. The step includes a step of detecting that the position of the student's face has moved.
- the student In the step of requesting the action, the student is requested to move the face position, and in the step of detecting the action, the fact that the student has moved the face position is detected based on a change in the image of the acquired video. Therefore, if a regular student uses a pre-recorded video, etc., to take the role of a third party on his / her behalf, the face position does not change as instructed. You can confirm that you are attending.
- the course confirmation method described in claim 13 is the course confirmation method described in claim 11 or claim 12, wherein the step of requesting an action is a step of requesting a question from the student and requesting a voice response.
- the steps of detecting an action include a step of acquiring a student's voice, a step of recognizing a voice answer from the acquired voice, and determining the validity of the student's voice answer from the recognized voice answer. It includes a step and a step of detecting the movement of the student's mouth associated with the student's voice response.
- the student In the step of requesting the action, the student is asked to ask a question and give a voice response, and in the step of detecting the action, the voice of the student is obtained, the voice response is recognized, and the validity of the voice response of the student is recognized.
- the movement of the student's mouth accompanying the voice response is detected by changing the image of the acquired video. It is confirmed that the student who has been determined to be the student has answered the question by voice, and it can be confirmed that the regular student has taken the course.
- the attendance confirmation method described in claim 14 is the attendance confirmation method described in claim 13, wherein the step of detecting an action includes the voice response of the student registered in advance and the voice response of the student. It includes steps for collation. In the step of detecting the action, the student's voice response is compared with the pre-registered student's voice, so that the student performs not only face image matching but also voice matching. Can be confirmed more accurately.
- the method for confirming attendance described in claim 15 is the method for confirming attendance described in claim 13 or claim 14, wherein the step of requesting an action involves asking the student a time-related question and requesting a voice response.
- the step of detecting the action determines the validity of the time the student answered. It includes steps.
- the student In the step of requesting the action, the student is asked a question about the time, and in the step of detecting the action, the validity of the time answered by the student is determined, and the movement of the mouth of the student accompanying the voice response is acquired. Since the detection is made based on the change in the image of the received video, if the legitimate student uses a pre-recorded video, etc., to take the role of a third party on behalf of the student, it will not be possible to answer the requested time. It is possible to find out on behalf of the student on behalf of the student, and confirm that the regular student is taking the course.
- a question about time may require that the current time be spoken, and the validity of the student's voice response is based on the time obtained by speech recognition of the student's voice response.
- the course confirmation method described in claim 16 is the course confirmation method described in any one of claims 13 to 15, and the step for requesting an action is Including the step of asking a question about the student's personal information and requesting a voice response, the step of detecting the action includes the step of checking the student's answered personal information with the student's personal information registered in advance. is there.
- the student is asked questions regarding the student's personal information, and at the step of detecting the action, the personal information answered by the student is compared with the personal information of the student registered in advance. Since the movement of the student's mouth accompanying the voice response is detected based on the change in the image of the acquired video, a request is made if an authorized student uses a pre-recorded video, etc., to take a third party on behalf of the student. Since it is not possible to give a voice response regarding the personal information of the trainee, it is possible to find out that the student is taking the course on behalf of the student and confirm that the legitimate trainee is taking the course.
- the attendance confirmation method according to claim 17 is the attendance confirmation method according to any one of claims 11 to 16, wherein the step of detecting the action is performed when the position of the face image of the student is incorrect. It includes a step of determining that the change does not occur continuously.
- the method for confirming attendance described in claim 18 is the method for confirming attendance described in any one of claims 11 to 17, wherein the step of detecting the action is performed by the student by the step of requesting the action. It has a step of determining that there has been an image change within a specified time after requesting the function.
- the course confirmation method described in claim 19 is the course confirmation method described in any one of claims 11 to 18, wherein the step of requesting an action is performed to the student at an unpredictable timing. Requesting action It is.
- the course confirmation method described in claim 20 is the course confirmation method described in any one of claims 11 to 19, and the step of requesting the action is performed by the instruction from the instructor to the student. It requires action.
- the attendance confirmation program described in claim 21 is a program for causing a computer to execute the attendance confirmation method according to any one of claims 11 to 20 on a computer.
- FIG. 1 is a system configuration diagram of a distance education system according to an embodiment of the present invention.
- FIG. 2 is a diagram illustrating a result of the distance learning system according to the embodiment of the present invention. It is a figure showing an example of a screen displayed on a lecturer terminal.
- FIG. 3 is a processing flow diagram (part 1) of a course confirmation program of the distance learning system according to the embodiment of the present invention.
- FIG. 4 is a processing flow diagram (part 2) of a course confirmation program of the distance education system according to the embodiment of the present invention.
- FIG. 5 is a process flow diagram (part 3) of a course confirmation program of the distance learning system according to the embodiment of the present invention.
- FIG. 1 shows a system configuration diagram of a distance education system according to an embodiment of the present invention.
- reference numeral 1 denotes a distance education system, which is a web server 10, a two-way communication server 20, a content distribution server 30, an operation management system 40, and a lecturer terminal 6 used by the lecturer.
- 0 and the communication line connection device 70 are connected via a network, and the student terminals 101, 102,... used by the students via the communication line 2 when providing the distance learning service. Is connected to
- the Web server 10 is a WWW server serving as a point of contact when using the present system.
- a predetermined Web browser is used from the instructor terminal 60 or the student terminals 101, 102,... Using a Web browser. By accessing the page, you can set up and proceed with courses and take courses.
- the two-way communication server 20 includes a connection destination table for registering a terminal address of a terminal to be connected.
- the two-way communication server 20 connects terminals registered in the connection destination table to perform two-way communication using multimedia information including video and audio. Provides functions. While the course is open, the connection destination table registers the instructor terminal 60 and the terminal addresses of the student terminals 101, 102,... used by the students who attend the course. Video and audio sent from The video and audio transmitted from the terminals 101, 102, ... are received, and the received video and audio are synthesized and transmitted to the instructor terminal 60 and each of the student terminals 101, 102, ... Send.
- the content distribution server 30 has a teaching material database 32 storing multimedia teaching materials such as moving images, still images, audio, text, sound effects, etc., and designates the terminals registered in the distribution destination table. Provide a function to distribute the content. While the course is open, the terminal addresses of the lecturer terminal 60 and the student terminals 101, 102,... used by the students attending the course are registered in the distribution destination table. The specified teaching material content is distributed to each terminal.
- the operation management system 40 is a system for managing the operation of distance education.
- the operation management system 40 includes a course information database 50 storing various data related to courses to be provided, and a course setting process 41 for setting courses. Performs course opening processing to open the set courses 4 2, course reception processing to accept courses that have been opened 4 3, course confirmation processing to confirm the attendance of students who are opening courses 4 4 .
- the instructor terminal 60 includes a TV camera (a) for acquiring the instructor's video, a headset (b) for inputting and outputting the instructor's audio, a monitor screen (c) for displaying the image, and commands and messages. It consists of a keypad (d) for input, a mouse (e), a video input interface, an audio input / output interface, and a computer ( f) equipped with a network connection device.
- the computer acquires the video and audio of the instructor and sends it to the two-way communication server 20.
- the video and audio transmitted from the two-way communication server 20 are output to the monitor screen and the headset.
- a web browser for accessing the web server 10 is installed.
- the communication line 2 can be applied to any communication line such as a wired computer network, a wireless convenience network, a telephone line, a satellite line, the Internet, etc. To explain. Therefore, the communication line connection device 70 uses an Internet router for connecting to the Internet.
- the student terminals 101, 102,..., like the instructor terminal 60 are a TV camera (a) that acquires the student's video and a headset that inputs and outputs the student's audio.
- (B) monitor screen (c) for displaying images
- keyboard (d) for inputting commands and messages
- mouse (e) video input interface
- audio input / output interface interface
- It is composed of a computer ( ⁇ ) equipped with a one-net connection device (for example, TA, etc.), acquires the video and audio of the student, transmits it to the two-way communication server 20, and sends it to the two-way communication server 20.
- a one-net connection device for example, TA, etc.
- a video / audio communication program that outputs transmitted video and audio to the monitor screen and headset, and an image and audio that is distributed from the content distribution server 30 to the monitor screen and headset.
- the secretariat implementing distance learning accesses the secretariat page of the web server 10 from the instructor terminal 60 or a dedicated secretariat terminal (not shown) to correspond to the annual education plan. Determine and enter the course to be opened based on the instructor's schedule. This will provide a course for the operation management system 40 Through the regular processing 41, a course schedule database 51 is constructed in the course information database 50, an attendance book is generated for each course, and registered in the attendance book database 52.
- the secretariat recruits students and issues IDs and passwords for accessing the Web server 10 to each student who meets certain training standards.
- Each student who has been issued an ID and password accesses the student's page on the web server 10 from each student's terminal to register the student's personal information and collate the face image at the time of attendance confirmation.
- the registration of the face image to be used and the registration of the voice to be used for the verification of the voice response to the question regarding the personal information at the time of attendance confirmation are performed.
- the registration of personal information is performed by the attendance registration process 42 of the operation management system 40, and the name, age, gender, date of birth, address, telephone number, e-mail address, etc. Is registered in the personal information database 53 of the course information database 50 together with the student ID and password and the terminal address of each student terminal. In addition, for the course that the student wants to attend, it is judged whether or not the course can be taken with reference to the course schedule database 51.If attendance is possible, the attendance book of the course in the attendance database 52 The student is registered at
- the face image is registered by setting the terminal address of the student terminal and the address of the operation management system in the connection destination table of the two-way communication server 20 by the course registration processing 42 of the operation management system 40, and When the user clicks on the face image registration button (not shown) provided on the web page, the image is recorded as a still image and registered in the face image database 54 of the course information database 50.
- the voice registration is also performed by the attendance registration process 42 of the operation management system 40, and the terminal of the student terminal is connected to the connection destination table of the two-way communication server 20.
- the address and the address of the operation management system are set, and the student's voice is acquired when the student clicks the voice registration button (not shown) for each personal information item provided on the web page, and the course information is acquired. It is registered for each personal information item in the voice database 55 of the database 50.
- the students of the course can access the two-way communication server 20 by accessing the attendance acceptance page from the student terminals 101, 102,... and checking in with the specified ID and password.
- the terminal address of the student terminal is set in the distribution destination table of the table and the content distribution server 30.
- the instructor of the course can access the instructor reception page of the Web server from the instructor terminal 60 to display the connection destination table of the bidirectional communication server 20 and the distribution destination table of the content distribution server 30.
- the terminal address of the instructor terminal 60 is set.
- the attendance confirmation process 44 of the operation management system 40 confirms the attendance described below, and if the student is confirmed to be a legitimate student, the attendance time is recorded in the attendance record Is done.
- the lecture starts in this manner, and the lecturer gives a lecture from the lecturer terminal 60, so that the video and audio of the lecturer are distributed to each student terminal.
- the instructor can control the content distribution server 30 from the instructor terminal 60 via the web server 10 and search and play the necessary teaching materials from the teaching material database 32 to play The learning materials are distributed to the students.
- Figure 2 shows an example of the screen displayed on the monitor screen of the student terminals 101, 102, ... during the lecture.
- A is transmitted from the instructor terminal 60 B is a lecturer screen that displays the video of the lecturer.
- B is a student screen that combines and displays the video of each student transmitted from each student terminal 101, 102,... with the name of each student. It is.
- the name of the student is displayed on the student screen B in a case where the instructor designates a specific student and requests a comment or an answer.
- a content screen C is a content screen distributed from the content distribution server 30, and a content screen C can display a pointer by operating the instructor terminal 60.
- a content screen C can display a pointer by operating the instructor terminal 60.
- D is an input screen that accepts input when the student speaks, answers questions asked by the instructor, or leaves or exits the course.E is input from the instructor terminal or the operation management system. It is a message screen that displays a message for each student. A message to each student when confirming the attendance of the student by the attendance confirmation process 4 4 is displayed on this message screen E.
- the monitor screen of the instructor terminal 60 is displayed in the same way as the monitor screen of the student terminal described above.
- the command input screen D is used to search for content distributed by the content distribution server 30 and control playback.
- Button ⁇ A control button for a boyfriend to be displayed in the content screen C is provided.
- Each student can ask a question or make a comment to the instructor by pressing the comment button during the course.
- the relevant student on the student screen B is displayed as a flicker display, and the instructor clicks the display from the instructor terminal to accept the comment.
- the video of the student is enlarged and synthesized and distributed to the lecturer terminal and each student terminal, and the voice of the student is distributed to the lecturer terminal and other student terminals.
- the trainee can talk to the instructor by video and audio, and the content of the talk is transmitted to other trainees.
- Instructors can also set questions during the course and have all or specific students answer.
- the trainee specified by the instructor selects the selection button or enters a message in the message box and clicks the answer button, the content is transmitted to the operation management system 40 via the web server 10.
- the count result is displayed on the instructor terminal 60.
- the instructor can disclose the tally result to each student as necessary, and the tally result is distributed to each student terminal via the content distribution server 30 by a command from the instructor terminal 60.
- the attendance confirmation process 44 of the operation management system 40 confirms the attendance described later at any time, and confirms that the regular students have taken the course.
- the image of the student on the student screen B becomes a center mark, and the center time is recorded in the attendance book.
- the center mark of the student on the student screen B returns to the normal display, and the return time is recorded in the attendance book.
- the exit time of the attendance book is recorded, and the terminal address of the student is deleted from the connection destination table and the distribution destination table, and the attendance ends.
- the instructor can accurately grasp the seating status of each student, and the attendance time, leaving time, middle time, and return time are automatically recorded in the attendance book, so that the actual attending time of the course can be grasped.
- the attendance confirmation process 4 4 allows each attendee to confirm the attendance at any time. It is expected that each participant will be able to properly manage the seating time during the course to avoid being absent.
- the two-way communication server 20 starts a common application between the instructor terminal and each student terminal, and exchanges operation information performed on each terminal with each other to share the application with everyone. It has an abbreviated sharing function.
- a common white point for drawing characters and figures is displayed on the screen of each terminal, and instructors and students can proceed with the discussion while freely writing characters and figures. It is also possible to conduct a lecture in the form of a mi.
- chat screen is displayed on each terminal, and a function is provided for instructing and discussing texts between the instructor and each student.
- each student receives the distribution of multimedia teaching materials by the content distribution server 30 while receiving the video and audio of the instructor by the two-way communication server 20.
- Instructors can set questions for students and request answers as needed, and can accept questions and remarks from students and have video and audio conversations with the two-way communication server 20 Therefore, even if the students are in remote locations, the same educational effect as if they were receiving the lessons in the lecture room using the same teaching materials can be obtained.
- the student screen B is described as displaying the name of each student. However, the student screen B displays only the image or icon of the student, and is separately provided to the instructor. To provide the attendance sheet corresponding to the display May be.
- the secretariat prepares lecture videos in advance and registers them in the teaching material database 32 of the content distribution server 30, and sets the lecture videos to be used in the lecture schedule database 51.
- the lecture is automatically started by designating the lecture video to be delivered by the content delivery server 30 when the course setting date and time comes. Questions are set in the lecture videos as appropriate, and students' answers to them are automatically tabulated and recorded. Also, if there are any questions to the trainees, they will be sent to the secretariat by e-mail to be informed of the lecturer in charge and will be answered later.
- the attendance confirmation process 4 4 consists of the student image acquisition process 4 5 for acquiring the image of each student transmitted from each student terminal, and the acquired image of each student in the face image database 5 4 Face image collation processing for collating with the student's face image 4 6 and action request processing 4 for requesting each student who has cleared the face image collation a function with a change in the image transmitted from each student terminal 4 7 and an action detection process 48 for detecting a change in the image transmitted from each student terminal in response to the requested action.
- each student is asked to move his / her face position as instructed, to give a voice response to the current time, and to give a voice response to a question regarding the student's personal information. And three types of actions are required.
- Figures 3 to 5 show the processing flow of the attendance confirmation processing 44.
- the attendance confirmation request is issued.
- the terminal 60 is notified (SI02), and when the instructor receives the request for confirmation of attendance, the attendance is confirmed (S104).
- the attendance confirmation time is selected at the start of the course and at random times during the course. By performing the course confirmation at a random time during the course opening, the student cannot predict when the course confirmation will be performed, and an incentive is provided for the student to take the course continuously over the entire course time. However, if the instructor checks the course during the course, the course will be hindered, so the instructor will be notified of the request, and the instructor will stop the course and accept the request. Clicking to confirm the attendance.
- the attendance book of the relevant course is obtained from the attendance book data base 52 (S106), and the terminal address of the student terminal of each student registered in the attendance book is entered into the bidirectional communication server 2.
- the video and audio of the student are obtained (S108).
- the student terminal is notified of the confirmation of the face image (S110). For example, a message such as "I will confirm the attendance from now on. Please show your face on the camera in the same state as when registering for attendance" is displayed on the message screen.
- a message such as "Click here when ready” may be added, and the Web server 10 may detect that "Click here" is clicked, and proceed to the next step.
- the student's face image data is acquired from the face image database 53 (S112), and a still image cut out from the video of the student being acquired is combined with the student's face image data.
- Image collation is performed (S114). Image collation is performed on the image of the student who is acquiring the student's face image data as a template. And perform the direct matching process to find the point with the highest degree of matching.
- the image size was normalized by performing a feature extraction operation on the still image clipped from the video of the student being acquired to obtain the features such as the outline and the position and shape of the eyes, nose, mouth, etc.
- the matching process may be performed on the above, and the face image data of the student may be compared with the result of the feature extraction calculation.
- the process proceeds to the next step (S116). If the predetermined degree of coincidence is not obtained, a confirmation message is sent to the student terminal (S11). 1 8) If there is a response, return to S 110 and repeat the face image confirmation request (S 120) .If there is no response, go to S 406 and exclude the student from the attendance list. I do.
- the movement of the face is confirmed.
- the initial position of the student's face is detected from the extracted still image (S122).
- the position of the face is obtained as the point having the highest matching degree in the matching processing in the above-described image matching.
- the student terminal is notified of the face movement request (S124). For example, a message such as “Please move the face position to the right by about 10 cm” is displayed on the message screen.
- the direction in which the face is moved and the moving distance are changed at random as appropriate. This makes it difficult for the user to confirm the image using the video image prepared in advance, and can prevent a third party from taking the class on behalf of the third person.
- the face position of the student is continuously detected by the above-described image matching method (S126), and the face corresponding to the message described above is detected.
- the process proceeds to the next step (S128). If no change in the face position is detected within the predetermined time (S130), a confirmation message is sent to the student terminal (S132), and if there is a response, the process returns to S120. And repeat the face movement request (S1334), no response If it is, go to S406 to absent the student in the attendance book.
- the voice response of the time is confirmed.
- the voice response request of the time is notified to the student terminal (S20.0). For example, a message such as "Please answer the current time displayed on the instructor screen by voice" is displayed on the message screen.
- the student's voice response is detected from the signal level of the student's voice being acquired, and if a series of voice responses is detected (S202), the video and audio in the voice response are acquired. (S204). If a predetermined time has elapsed before a series of voice answers is detected (S 20).
- voice recognition is performed for the voice in the obtained voice response (S212). Since the target of speech recognition here is limited to time, matching processing is performed in syllable units using a time-based speech dictionary. Since the number of words to be identified is limited, it is thought that it is possible to recognize by unspecified speaker speech recognition using a speech dictionary corresponding to the unspecified speaker. May be used as a voice dictionary to perform specific speaker voice recognition.
- the current time displayed on the instructor screen is obtained (S2114). If the time of the voice response recognized by the voice is within a predetermined range (S216), the obtained voice response is obtained.
- the movement of the mouth is detected for the image in the middle (S218). Mouth movement detection is performed by obtaining the mouth shape parameters by the above-described feature extraction calculation for the frame corresponding to each syllable recognized in the video in the acquired voice response, and converting the syllable from each syllable recognized.
- the table is registered with the relationship between the shape of the mouth and the shape parameters of the mouth, and is compared with the shape parameters of the mouth.
- the judgment of the movement of the mouth is It is not necessary to determine exact match because the purpose is to find out that the video of the student whose face image has been collated is recorded data or that the audio response at the time is recorded data.
- a simple method for detecting that a change has occurred in the shape of the student's mouth in accordance with the period in which the is detected may be used.
- the voice of the time is registered in advance by the student and the specific speaker word voice recognition is performed, the video of the student corresponding to the time when the voice of the time is registered by the student is simultaneously recorded. The determination may be made by directly comparing the video of the student acquired for each syllable whose voice has been recognized with the recorded video of the student.
- the parameters of the mouth shape are obtained and recorded from the trainee's image, and the trainee's image obtained for each syllable recognized by speech is recorded.
- the determined mouth shape parameters may be compared with the recorded mouth shape parameters.
- the process proceeds to the next step (S220). If the voice response time is incorrect in S216 or it is determined in S220 that the video does not correspond to the voice response, go to S208 and send a confirmation message to the student terminal. If there is a response after notifying, repeat from S200.
- the description has been given assuming that the time of the voice response is recognized by voice and compared with the current time.However, syllable data corresponding to the current time is sequentially extracted from the voice dictionary and acquired. It may be compared with the voice in the voice response of the lecturer in order, and if the entire voice response of the student has a predetermined degree of coincidence, the voice response time may be determined to be correct.
- a question item of personal information is selected, and a voice response request for the question item of the personal information is notified to the student terminal (S300). This is, for example, "Your Please answer the date of birth by voice "on the message screen. It is preferable that the question items regarding the personal information are also randomly selected so that the student cannot predict.
- a voice response is detected from the signal level of the student's voice being acquired, and when a series of voice responses is detected (S302), the video and audio during the voice response are acquired (S302). 304).
- a voice data corresponding to the question item of the student's personal information is obtained from the voice data 55 (S312), and the voice data is obtained as a template.
- a matching process is performed with the voice in the answer (S314).
- the mouth movement is detected for the video in the acquired voice response (S318).
- the mouth movement is detected by calculating the mouth shape parameters for each frame of the video in the acquired voice response by the above-described feature extraction calculation, and this is registered in the personal information database 53. It is obtained by subtracting a table that stores the relationship between characters and mouth shape parameters from the character data of the participant's personal information. .
- the mouth movement is determined by confirming that the image of the student whose face image has been collated is recorded data or that the voice response at the time is recorded data. It is not necessary to determine an exact match because the purpose is to find out.Since it is easy to detect a change in the shape of the student's mouth corresponding to the period during which the voice response is detected, for example,
- the video of the student can be recorded at the same time as the personal information voice registration, and the video in the acquired voice response can be directly compared with the recorded video of the student. Alternatively, the determination may be made.
- the mouth shape parameters are obtained and recorded in chronological order from the student's video, and the mouth shape parameters obtained for the video in the acquired voice response are recorded.
- the determination may be made by comparing the evening with the recorded mouth shape parameter overnight.
- step S320 if it is determined that the movement of the student's mouth corresponds to the voice response, the process proceeds to the next step (S320). If it is determined in step S310 that the personal information of the voice response is incorrect or that the video does not correspond to the voice response in step S320, the process proceeds to step S308 to send a confirmation message to the student terminal. Message, and if there is a response, repeat from S300.
- the completion of the attendance confirmation is notified to the student terminal (S400), and the two-way communication server 20 is notified to transmit the video and audio of the student.
- the acquisition ends ends (S402).
- a face movement or a voice response is requested as an action required of the student.
- the present invention is not limited to this. Such as closing your hand, raising your hand, shooting an article of a specific shape on a camera, or shooting a piece of paper with a specified shape on a camera. Any function may be required as long as the effect is obtained, and the effects of the present invention are exhibited.
- actions such as confirmation of movement of the face, confirmation of the voice response of the time, and confirmation of the voice response of the personal information are requested, and the image change at that time corresponds to the request.
- the position of the student's face was continuously detected from the acquired image of the student, A function for confirming that the position of the face has not changed discontinuously may be provided.
- the position of the student's face changes discontinuously. It is possible to detect that the student is attending the course, and it is possible to more accurately confirm that the regular student is attending the course.
- satellite venues may be set up in various places, large-screen display devices and venue speeds may be provided there, and the students gathered here may be treated as one group attendee.
- the distance education system is provided with the content distribution server, and the teaching material used for the course is distributed to each student terminal by the content distribution server.
- the present invention is not limited to this.
- the instructor terminal has an external video and audio input terminal, Connect a DVD, etc., synthesize or switch the video and audio of the teaching material software reproduced by the instructor with the instructor's video and audio, send it to the two-way communication server, and distribute it to each student terminal by the two-way communication server. Is also good.
- the instructor terminal was described as being connected to the network in the distance learning system.
- the present invention is not limited to this, and the instructor terminal is also connected via the in-network. It may be connected to a distance learning system. This allows lecturers to open lectures from anywhere as long as they have a lecturer terminal that can connect to the Internet, and it is also possible to request lecturers from foreign residents. It also contributes to a reduction in labor costs.
- the distance education system is provided with a Web server, and the student terminal is described as performing the attendance procedure by accessing the Web server using a computer having a Web browser function.
- the system is not limited to this.
- a normal videophone is used as the student terminal, and the messages transmitted from the operation management system to the student terminals are generated by synthesizing the generated message images with the two-way communication server.
- This can be handled by providing a function to send data to the student terminal, and commands and messages can be input from the student terminal to the operation management system by using the dial button on the student terminal.
- This can be handled by providing a two-way communication server with a function to detect PB tone signals.
- the student terminal can be connected to a public telephone line, such as an ISDN video telephone terminal conforming to H.320 of the ITU-T recommendation, or a HTV of the ITU-T recommendation. It is possible to use an IP type videophone terminal line connected to the Internet, such as an IP (Internet Protocol) videophone terminal conforming to 3.23.
- the two-way communication server must be equipped with a video codec and a voice codec that are compatible with the student terminal standards. Student terminals can be mixed.
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Abstract
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Priority Applications (5)
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US10/528,641 US20060057550A1 (en) | 2002-09-27 | 2003-09-25 | Remote education system, course attendance check method, and course attendance check program |
EP03798474A EP1544831A1 (en) | 2002-09-27 | 2003-09-25 | Remote education system, course attendance check method, and course attendance check program |
AU2003266591A AU2003266591B2 (en) | 2002-09-27 | 2003-09-25 | Remote education system, course attendance check method, and course attendance check program |
JP2004539511A JP3930022B2 (ja) | 2002-09-27 | 2003-09-25 | 遠隔教育システム、受講確認方法および受講確認プログラム |
CA002500998A CA2500998A1 (en) | 2002-09-27 | 2003-09-25 | Remote education system, attendance confirmation method, and attendance confirmation program |
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JP2018511890A (ja) * | 2014-12-22 | 2018-04-26 | マカフィー, エルエルシー | オンライン教育におけるリアルタイムユーザ検証のためのシステム及び方法 |
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Also Published As
Publication number | Publication date |
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KR20050074443A (ko) | 2005-07-18 |
JPWO2004029905A1 (ja) | 2006-01-26 |
CA2500998A1 (en) | 2004-04-08 |
US20060057550A1 (en) | 2006-03-16 |
AU2003266591A1 (en) | 2004-04-19 |
TW200407807A (en) | 2004-05-16 |
EP1544831A1 (en) | 2005-06-22 |
AU2003266591B2 (en) | 2007-11-01 |
JP3930022B2 (ja) | 2007-06-13 |
CN1685380A (zh) | 2005-10-19 |
TWI294598B (en) | 2008-03-11 |
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