KR20120139914A

KR20120139914A - Auto tracing and recording system

Info

Publication number: KR20120139914A
Application number: KR1020110059457A
Authority: KR
Inventors: 김혁구
Original assignee: 주식회사 드림정보기술
Priority date: 2011-06-20
Filing date: 2011-06-20
Publication date: 2012-12-28

Abstract

The present invention relates to an automatic location tracking and recording system, by using a camera installed on the ceiling of the lecture room to automatically track the location of the lecturer in the lecture while recording and recording the lecture video including the voice of the lecturer, In the case of using the camera to automatically track the location of the learner to take a question video including the voice of the learner of the video taken with the lecture video recorded and recorded.
According to the present invention, while completely eliminating the problem that the movement of the cameraman or the noise generated during the operation of the camera in the conventional recording system to reduce the concentration of the learner, the lecture video of the lecturer and the student to easily record the video recording the question video can do.

Description

Auto tracing and recording system

The present invention relates to an automatic location tracking and recording system, and more particularly, by using a camera installed on the ceiling of a classroom, such as school or academy, while automatically tracking the location of the lecturer during lectures by taking a lecture image including the voice of the lecturer Relates to an automatic location tracking and recording system.

In a conventional recording system for recording a lecture video including an instructor's voice in a classroom, such as a school or an institute, a camera photographer uses a camera's PTZ functions such as panning, tilting, and zooming to display a whiteboard (or Chalkboard) Take a lecture video while moving from front to back while auto focusing or manual focusing on the upper torso or face of the lecturer.

As described above, in a conventional recording system in which a camera photographer directly operates a camera in a lecture room to take a lecture image, there is a problem in that the movement of the camera photographer or noise generated while operating the camera lowers the concentration of the student.

The present invention is to solve the above-mentioned problems, an object of the present invention is to record and record a lecture video including the voice of the lecturer while automatically tracking the location of the lecturer in the lecture using a camera installed on the ceiling of the classroom In addition, the instructor provides an automatic location tracking and recording system that automatically tracks the location of the students who ask questions using the camera while recording and recording the question images including the students' voices. .

In order to achieve the object of the present invention as described above, the automatic location tracking and recording system according to the first embodiment of the present invention, each is given a unique identifier (ID), which is located in the object detection area in front of its own A plurality of ultrasonic sensors configured to output an object detection signal including the identifier (ID) when the object is detected, and spaced apart at predetermined intervals along a lower portion of the white board (or blackboard) of the lecture room; PTZ camera installed on the ceiling of lecture room and equipped with autofocus function, and performs PTZ function by recording command signal including sensor position information to track lecturer's location while including lecturer's voice. Or a camera for capturing the question image including the question voice of the learner while tracking the location of the learner by performing a PTZ function according to a recording command signal including the learner table location information; An image storage unit for recording a lecture image of the lecturer and a question image of the learner photographed by the camera; A sensor position storage unit for storing position information of a plurality of ultrasonic sensors, each of which is given a unique identifier (ID); A student table location information storage unit for storing location information of a plurality of student tables each having a unique identifier ID; Object detection initialization signal to detect an immovable fixed object located in front of the white board (or blackboard) of the classroom, instructor detection signal to detect an instructor moving up and down in front of the white board (or blackboard) of the classroom, the instructor An input unit for outputting a table selection signal for selecting a plurality of student tables that are located in a lecture room and each have a unique identifier (ID) to take a question image of a student who is asked; And when the object detection initialization signal is input, drive the plurality of ultrasonic sensors, and detect the non-moving and fixed objects located in the object detection area in front of them, respectively, and output an object detection signal including an identifier (ID). And stores the fixed object detection information for each ultrasonic sensor in the fixed object storage unit, and when the instructor detection signal is input, drives the plurality of ultrasonic sensors and fixes the fixed object storage unit in the object detection area in front of each other. When a fixed object or object instructor moving around the object is detected and outputs an object detection signal including an identifier (ID), only the object detection signal that detects the moving instructor is selected and an ultrasonic sensor indicated by the object detection signal. The recording command signal including the position information of the image is applied to the camera. The camera performs a PTZ function to track the position of the instructor while capturing the lecture image including the lecture voice of the instructor, and then records the lecture image in the image storage unit, or when the table selection signal is input, the corresponding table. The recording command signal including the location information of the student table indicated by the selection signal is applied to the camera so that the camera performs a PTZ function to track the student's location while capturing the question image including the student's question voice. And a controller for recording a question image in the image storage unit.

In order to achieve the object of the present invention as described above, the automatic location tracking and recording system according to a second embodiment of the present invention,

Each is given a unique identifier (ID), and when an object located in the front object detection area is detected, an object detection signal including the identifier (ID) is output, and a white board (or blackboard) of a classroom (WB) A plurality of ultrasonic sensors disposed at predetermined intervals along a lower portion of the; PTZ camera installed on the ceiling of lecture room and equipped with autofocus function, and performs PTZ function by recording command signal including sensor position information to track lecturer's location while including lecturer's voice. Or a plurality of cameras for capturing a question image including a question voice of the learner while tracking the location of the learner by performing a PTZ function according to a recording command signal including the learner table location information; An image storage unit configured to record lecture images of the instructor and question images of the students taken by the plurality of cameras; A sensor position storage unit for storing position information of a plurality of ultrasonic sensors, each of which is given a unique identifier (ID); A student table location information storage unit for storing location information of a plurality of student tables each having a unique identifier ID; Object detection initialization signal for detecting a stationary fixed object located in front of the classroom white board (or blackboard) (WB), camera selection signal for selecting one of a plurality of cameras, and white board (or blackboard) in the classroom (WB) an input unit for outputting the instructor detection signal for detecting the instructor moving from the front to the front, the table selection signal for selecting a plurality of student tables are positioned in the lecture room, each of which is given a unique identifier (ID); And when the object detection initialization signal is input, drive the plurality of ultrasonic sensors, and detect the non-moving and fixed objects located in the object detection area in front of them, respectively, and output an object detection signal including an identifier (ID). The fixed object storage unit 81 stores fixed object detection information for each ultrasonic sensor, and when the instructor detection signal is input while the camera selection signal is input, the plurality of ultrasonic sensors are driven, and each of them is moved forward. The object detection area detects the moving instructor by detecting an instructor moving around the fixed object or the fixed object in which the fixed object detection information is stored in the fixed object storage area and outputting an object detection signal including an identifier (ID). Select only the signal to include the location information of the ultrasonic sensor represented by the object detection signal Applying a recording command signal to a camera corresponding to the camera selection signal, the camera performs a PTZ function to track the position of the instructor while capturing the lecture image including the lecture voice of the instructor, and then stores the image of the lecture image. If the table selection signal is input while the camera selection signal is input or the camera selection signal is input, the recording command signal including the position information of the student table indicated by the corresponding table selection signal is applied to the camera corresponding to the camera selection signal. The controller performs a PTZ function to track the location of the learner while capturing the question image including the question voice of the learner and then records the question image in the image storage unit.

According to the present invention, while completely eliminating the problem that the movement of the cameraman or the noise generated during the operation of the camera in the conventional recording system to reduce the concentration of the learner, the lecture video of the lecturer and the student to easily record the video recording the question video can do.

1 is a block diagram showing the configuration of an automatic location tracking and recording system according to a first embodiment of the present invention.
2 is a plan view of a classroom in which an automatic location tracking and recording system according to a first embodiment of the present invention is installed;
Figure 3 is a block diagram showing the configuration of an automatic location tracking and recording system according to a second embodiment of the present invention.
4 is a plan view of a lecture room equipped with an automatic location tracking and recording system according to a second embodiment of the present invention;

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

Example 1

1 is a block diagram showing the configuration of an automatic location tracking and recording system according to a first embodiment of the present invention.

* As shown in FIG. 2, the automatic location tracking and recording system according to the first embodiment of the present invention includes a white board (or blackboard) WB and a plurality of student tables 60_1, 60_2, 60_3, ..., 60_N-2. And 60_N-1,60-N).

1 and 2, the plurality of ultrasonic sensors 10_1, 10_2, 10_3..., 10_N-2, 10_N-1, 10-N are each given a unique identifier ID and an object in front of them. When an object (eg, an instructor table (T), a white board (or blackboard) WB) moves up or down in front of the whiteboard (WB)) is detected, an object detection signal including the identifier (ID) is detected. Output

The plurality of ultrasonic sensors 10_1, 10_2, 10_3,..., 10_N-2, 10_N-1, 10-N are disposed at predetermined intervals along a lower portion of the white board (or blackboard) WB in the classroom. .

Camera 20 is a PTZ camera installed on the ceiling of the classroom and has an autofocus function, and performs a PTZ function by recording command signals including sensor position information to track the position of the instructor while tracking the position of the instructor. Taking a lecture image including a video, or performing a PTZ function according to a recording command signal including the student table location information to track a student's location while taking a question image including the student's question voice.

The camera 20 may be a dome camera or a box or protrusion camera.

The image storage unit 30 records the lecture image of the lecturer and the student's question image photographed by the camera 20.

The sensor position storage unit 40 stores position information of the plurality of ultrasonic sensors 10_1, 10_2, 10_3..., 10_N-2, 10_N-1, 10 -N, each of which is given a unique identifier ID.

The student table location information storage unit 50 stores location information of a plurality of student tables 60_1, 60_2, 60_3, ..., 60_N-2, 60_N-1, 60-N, each having a unique identifier ID. do.

The input unit 70 is an object detection initialization signal for detecting an immovable fixed object (eg, instructor table T, etc.) located in front of the white board (or blackboard) WB of the classroom, the white board of the classroom (or (WB) Instructor detection signal for detecting instructor moving from front to back, multiple student tables (60_1, 60_2, 60_3, ..., each of which are positioned within the classroom and each have a unique identifier (ID)) Outputs a table selection signal for selecting 60_N-2, 60_N-1, 60-N).

The input unit 70 uses a keyboard connected to a monitor that provides a user interface (UI) screen for selectively outputting the object detection initialization signal, the instructor detection signal, and the table selection signal, or the user interface ( UI) can use a touch button of a touch screen that provides a screen.

When the object detection initialization signal is input, the controller 80 drives the plurality of ultrasonic sensors 10_1, 10_2, 10_3..., 10_N-2, 10_N-1, 10-N, and each of them detects an object in front of it. When the fixed object located in the area is detected and the object detection signal including the identifier (ID) is outputted, the ultrasonic sensor 10_1, 10_2, 10_3..., 10_N-2, 10_N is applied to the fixed object storage unit 81. -1,10-N) stores the fixed object detection information.

When the instructor detection signal is input, the controller 80 drives the plurality of ultrasonic sensors 10_1, 10_2, 10_3..., 10_N-2, 10_N-1, 10-N, and they respectively detect an object in front of their own. In the area, when the fixed object storage information is detected in the fixed object storage unit 81, the fixed object or the instructor moving around and outputs an object detection signal including an identifier (ID) to detect the moving instructor. Select only the signal and apply the recording command signal including the position information of the ultrasonic sensors 10_1, 10_2, 10_3…, 10_N-2, 10_N-1, 10-N indicated by the object detection signal to the camera 20. The camera 20 performs a PTZ function to track the position of the instructor while capturing the lecture image including the lecture voice of the lecturer and then records the lecture image in the image storage unit 30.

When the table selection signal is input, the control unit 80 includes a recording command including position information of the student tables 60_1, 60_2, 60_3, ..., 60_N-2, 60_N-1, 60-N represented by the corresponding table selection signal. By applying a signal to the camera 20, the camera 20 performs a PTZ function to track a student's location while capturing the question image including the question voice of the student, and then stores the question image in the image storage unit ( Record on 30).

The controller 80 may be implemented as a computer main body including the image storage unit 30, the sensor position information storage unit 40, the student table position information storage unit 50, and the fixed object storage unit 81.

The automatic location tracking and recording system according to the first embodiment of the present invention configured as described above operates as follows.

Before starting the lecture, the instructor first manipulates the input unit 70 to detect a stationary stationary object (eg, instructor table T, etc.) located in front of the white board (or blackboard) WB of the classroom. Outputs object detection initialization signal.

The instructor outputs the object detection initialization signal to detect an immovable fixed object (eg, instructor table T, etc.) located in front of the white board (or blackboard) WB of the classroom. The plurality of ultrasonic sensors 10_1, 10_2, 10_3…, 10_N-2, 10_N-1, 10-N are driven while moving up and down in front of the white board (or blackboard) WB of the instructor table ( When the fixed object such as T) is detected, the camera 20 automatically ignores the fixed object without tracking the position.

That is, in the automatic position tracking and recording system according to the first embodiment of the present invention, as the object detection initialization signal is output from the input unit 70 before the lecture starts, the control unit 80 is connected to the fixed object storage unit 81. After the fixed object detection information is stored for each of the ultrasonic sensors 10_1, 10_2, 10_3…, 10_N-2, 10_N-1, 10-N, even if a fixed object is detected after the start of the lecture, the whiteboard (or Blackboard) (WB) detects only the instructor moving from place to place in front of the camera 20 to automatically track the position of the instructor while recording and recording the lecture video including the voice of the instructor.

When the input unit 70 outputs the object detection initialization signal as described above, the controller 80 drives the plurality of ultrasonic sensors 10_1, 10_2, 10_3..., 10_N-2,10_N-1,10-N. These ultrasonic sensors 10_1, 10_2, 10_3…, 10_N-2, 10_N-1, 10-N each detect an immovable and fixed object located in the object detection area in front of each other and identify each identifier (ID). When outputting an object detection signal including a) is stored in the fixed object storage unit 81, the fixed object detection information for each ultrasonic sensor (10_1, 10_2, 10_3 ..., 10_N-2, 10_N-1, 10-N). For example, when one or more ultrasonic sensors 10_1, 10_2, 10_3…, 10_N-2, 10_N-1, 10-N detect a fixed object such as the instructor table T, the controller 80 ) Stores the fixed object detection information in the fixed object storage unit 81 together with the identifier ID of the corresponding ultrasonic sensor. Accordingly, even if the instructor moves around from the front of the white board (or the blackboard) WB, the controller 80 detects the fixed object even if the ultrasonic sensor in which the fixed object detection information is stored in the fixed object storage unit 81 detects the fixed object. Ignore this and detect only the instructor moving up and down in front of the white board (or blackboard) (WB) in the classroom, using the camera 20 to automatically track the position of the instructor while taking a video of the lecture including the voice of the instructor Record.

In fact, the fixed object detection information is stored in the fixed object storage unit 81, and then the instructor operates the input unit 70 while starting the lecture to move up and down in front of the white board (or blackboard) WB in the classroom. When outputting the instructor detection signal for detecting the, from this time the controller 80 detects only the instructor moving up and down in front of the white board (or blackboard) (WB) of the classroom to use the camera 20 to determine the position of the instructor Automatically track and record videos of lectures containing the instructor's voice.

For example, after the instructor detection signal is output and applied to the controller 80, the ultrasonic sensor 10_1 detects an instructor located in the object detection area in front of its own and includes an object detection signal including an identifier (ID). The controller 80 applies the recording command signal including the position information of the ultrasonic sensor 10_1 indicated by the object detection signal to the camera 20. Accordingly, the camera 20 performs a PTZ function. Taking a lecture image including the lecture voice of the lecturer while tracking the location of the lecturer, the lecture image thus taken is recorded in the image storage unit 30 through the controller 80.

If the learner asks a question while the lecture video is being recorded as described above, and the instructor wants to take a video of the learner's question, the instructor manipulates the input unit 70 to take a question image of the learner's question. Outputs a table selection signal to select a plurality of student tables (60_1, 60_2, 60_3, ..., 60_N-2, 60_N-1, 60-N) that are located in the classroom and each have a unique ID. do.

In this case, the controller 80 may transmit a recording command signal including position information of the student tables 60_1, 60_2, 60_3, ..., 60_N-2, 60_N-1, 60-N indicated by the corresponding table selection signal. 20), and accordingly, the camera 20 captures a question image including a question voice of the learner while tracking the location of the learner by performing a PTZ function, and the captured question image is used to control the controller 80. The video recording unit 30 is recorded along with the lecture video.

For example, when the instructor receives a question of a student sitting on the student table 60_1 and wants to record and record the question image of the student, the instructor operates the input unit 70 to output a 60_1 table selection signal, and thus the camera ( 20) performs a PTZ function to track the position of the student sitting on the student table 60_1 while capturing the question image including the question voice of the student.

As described above, the lecturer's lecture video and the student's question video recorded in the video storage unit 30 may be stored in a moving memory and played on their own computer when the lecturer or the student needs it, and thus the lecturer may learn the lecture. Students can divide and evaluate their lectures while reviewing the lectures. Students can review the lectures and questions while reviewing the lectures.

[Example 2]

3 is a block diagram showing the configuration of an automatic location tracking and recording system according to a second embodiment of the present invention.

As shown in FIG. 4, the automatic location tracking and recording system according to the second embodiment of the present invention includes a white board (or blackboard) WB and a plurality of student tables 60_1, 60_2, 60_3, ..., 60_N-2, 60_N-1,60-N) is installed in the classroom.

3 and 4, the plurality of ultrasonic sensors 10_1, 10_2, 10_3..., 10_N-2, 10_N-1, 10-N are each given a unique identifier ID, and an object in front of them. When an object (eg, an instructor table (T), a white board (or blackboard) WB) moves up or down in front of the whiteboard (WB)) is detected, an object detection signal including the identifier (ID) is detected. Output

The plurality of cameras 20_1,..., 20_N are PTZ cameras installed on the ceiling of a classroom and have an autofocus function, and perform a PTZ function by recording command signals including sensor position information to adjust the position of the instructor. Take a video of the lecture including the voice of the lecturer while tracking, or take a picture of the question video including the voice of the student while tracking the student's location by performing the PTZ function by recording command signal including the student's table location information. do. For reference, FIG. 4 illustrates a state in which three cameras 20_1, 20_2, and 20_3 are installed on the ceiling of a classroom.

As the plurality of cameras 20_1,..., 20_N, a dome camera or a box camera may be used.

If any one of the plurality of cameras 20_1,..., 20_N is being photographed, the remaining cameras remain in the stopped state. For example, while any one of the plurality of cameras 20_1,..., 20_N takes a lecture image of the instructor, the remaining cameras remain stopped, and one of the plurality of cameras 20_1,. The rest of the cameras remain stopped while shooting video.

The image storage unit 30 records a lecture image of the lecturer and a question image of the learner photographed by the plurality of cameras 20_1,..., 20_N.

The input unit 70 is an object detection initialization signal for detecting an immovable fixed object (eg, instructor table T, etc.) located in front of a white board (or blackboard) WB in a classroom, a plurality of cameras 20_1, Camera selection signal to select any one of…, 20_N), instructor detection signal to detect the instructor moving up and down in front of the white board (or blackboard) (WB) of the classroom, and are positioned within the classroom A table selection signal for selecting a plurality of student tables 60_1, 60_2, 60_3, ..., 60_N-2, 60_N-1, 60-N to which an identifier ID is assigned is output.

The input unit 70 uses a keyboard connected to a monitor that provides a user interface (UI) screen for selectively outputting the object detection initialization signal, the camera selection signal, the instructor detection signal, and the table selection signal, Alternatively, a touch button of a touch screen providing the user interface (UI) screen may be used.

The controller 80 drives the plurality of ultrasonic sensors 10_1, 10_2, 10_3..., 10_N-2, 10_N-1, 10-N when the instructor detection signal is input while the camera selection signal is input. Each of them senses a fixed object or fixed instructor moving around the fixed object storage information in the fixed object storage unit 81 in the object detection area in front of the object detection signal including an identifier (ID). When outputted, the recording command signal including the position information of the ultrasonic sensors 10_1, 10_2, 10_3…, 10_N-2, 10_N-1, 10-N indicated by the object detection signal by selecting only the object detection signal that detects the moving instructor. Is applied to the cameras 20_1,..., 20_N corresponding to the camera selection signal, and the corresponding cameras 20_1,..., 20_N perform the PTZ function to track the position of the instructor while capturing the lecturer's position. Let them shoot and then The image is recorded in the image storage unit 30.

If the table selection signal is input while the camera selection signal is input, the controller 80 receives the students table 60_1, 60_2, 60_3, ..., 60_N-2, 60_N-1, 60-N indicated by the corresponding table selection signal. The recording command signal including the position information of the camera is applied to the cameras 20_1, ..., 20_N corresponding to the camera selection signal, and the corresponding cameras 20_1, ..., 20_N perform the PTZ function to track the location of the students. After photographing a question image including a question voice of the learner, the question image is recorded in the image storage unit 30.

The automatic location tracking and recording system according to the second embodiment of the present invention configured as described above operates as follows.

The instructor outputs the object detection initialization signal to detect an immovable fixed object (eg, instructor table T, etc.) located in front of the white board (or blackboard) WB of the classroom. The plurality of ultrasonic sensors 10_1, 10_2, 10_3…, 10_N-2, 10_N-1, 10-N are driven while moving up and down in front of the white board (or blackboard) WB of the instructor table ( When detecting a fixed object such as T), any one of the plurality of cameras 20_1, ..., 20_N selected among the plurality of cameras 20_1, ..., 20_N will ignore the fixed object without automatically tracking its position. It is to.

That is, in the automatic position tracking and recording system according to the second embodiment of the present invention, as the object detection initialization signal is output from the input unit 70 before the lecture starts, the control unit 80 is connected to the fixed object storage unit 81. After the fixed object detection information is stored for each of the ultrasonic sensors 10_1, 10_2, 10_3…, 10_N-2, 10_N-1, 10-N, even if a fixed object is detected after the start of the lecture, the whiteboard (or (WB) detects only the instructor moving from the front to the front of the instructor while automatically tracking the position of the instructor using one of the cameras 20_1, ..., 20_N selected from the plurality of cameras 20_1, ..., 20_N. Record and record lecture video including audio.

When the input unit 70 outputs the object detection initialization signal as described above, the controller 80 drives the plurality of ultrasonic sensors 10_1, 10_2, 10_3..., 10_N-2,10_N-1,10-N. These ultrasonic sensors 10_1, 10_2, 10_3…, 10_N-2, 10_N-1, 10-N each detect an immovable and fixed object located in the object detection area in front of each other and identify each identifier (ID). When outputting an object detection signal including a) is stored in the fixed object storage unit 81, the fixed object detection information for each ultrasonic sensor (10_1, 10_2, 10_3 ..., 10_N-2, 10_N-1, 10-N). For example, when one or more ultrasonic sensors 10_1, 10_2, 10_3…, 10_N-2, 10_N-1, 10-N detect a fixed object such as the instructor table T, the controller 80 ) Stores the fixed object detection information in the fixed object storage unit 81 together with the identifier ID of the corresponding ultrasonic sensor. Accordingly, even if the instructor moves around from the front of the white board (or the blackboard) WB, the controller 80 detects the fixed object even if the ultrasonic sensor in which the fixed object detection information is stored in the fixed object storage unit 81 detects the fixed object. Ignores this and detects only the instructor moving from the front of the classroom white board (or blackboard) (WB) to use any one of the cameras 20_1, ..., 20_N selected from the plurality of cameras 20_1, ..., 20_N. Automatically tracks the instructor's location while recording and recording lecture videos that include the instructor's voice.

In fact, the fixed object detection information is stored in the fixed object storage unit 81, and then the instructor operates the input unit 70 while starting a lecture, so that one of the cameras 20_1 among the plurality of cameras 20_1, ..., 20_N is first used. After outputting a camera selection signal for selecting,…, 20_N), the instructor for detecting the instructor moving up and down in front of the white board (or blackboard) WB of the classroom by successively manipulating the input unit 70. When the detection signal is output, the controller 80 detects only an instructor moving up and down in front of the white board (or blackboard) WB of the lecture room and selects one of the plurality of cameras 20_1,..., 20_N. The camera 20_1, ..., 20_N is used to automatically track the position of the instructor while recording and recording a lecture video including the instructor's voice.

For example, a camera selection signal for selecting any one of the plurality of cameras 20_1,..., 20_N is located at the position closest to the instructor is output, and the instructor detection signal is successively followed. After the output is applied to the control unit 80, the ultrasonic sensor 10_1 detects the instructor located in the object detection area in front of its own and outputs the object detection signal including the identifier (ID), the control unit 80 ) Applies a recording command signal including the position information of the ultrasonic sensor 10_1 indicated by the object detection signal to any one of the cameras 20_1,..., 20_N selected from the plurality of cameras 20_1,. Therefore, any one of the plurality of cameras 20_1, ..., 20_N selected from among the cameras 20_1, ..., 20_N performs a PTZ function to capture the lecture image including the voice of the lecturer while tracking the position of the lecturer. The captured lecture image is recorded in the image storage unit 30 through the controller 80.

If the learner asks a question while the lecture video is being recorded as described above, and the instructor wants to photograph the question video of the learner, the instructor operates the input unit 70 to perform the first operation among the plurality of cameras 20_1,..., 20_N. After outputting a camera selection signal for selecting any one of the cameras 20_1,..., 20_N, successively, the input unit 70 is operated to determine a position in the lecture room, and to give each unique identifier ID. A table selection signal for selecting a plurality of student tables 60_1, 60_2, 60_3, ..., 60_N-2, 60_N-1, 60-N is output.

In this case, the controller 80 may generate a plurality of recording command signals including position information of the student tables 60_1, 60_2, 60_3, ..., 60_N-2, 60_N-1, 60-N indicated by the corresponding table selection signal. It is applied to any one of the cameras 20_1,..., 20_N selected from the cameras 20_1,. ) Performs a PTZ function to track the location of the learner while photographing the question image including the question voice of the learner, and the photographed question image is provided to the image storage unit 30 through the controller 80. It is recorded with the video.

For example, when an instructor receives a question from a student sitting on the student table 60_1 and wants to record and record a question image of the student, the instructor manipulates the input unit 70 to take the student table from among the plurality of cameras 20_1,..., 20_N. Outputs a camera selection signal for selecting one of the cameras 20_1,..., 20_N positioned closest to 60_1, and subsequently outputs a 60_1 table selection signal, and accordingly the plurality of cameras 20_1,. 20_N) selected one of the cameras 20_1, ..., 20_N performs a PTZ function to capture a question image including a question voice of the students while tracking the location of the students sitting on the students' table 60_1.

The automatic location tracking and recording system according to the present invention described above is not limited to the above-described embodiments, and has a general knowledge in the field of the present invention without departing from the gist of the present invention as claimed in the following claims. Anyone who grows has the technical spirit to the extent that anyone can make various changes.

10_1,10_2,10_3,... , 10_N-2,10_N-1,10-N: ultrasonic sensor
20,20_1,... 20_N: camera 30: video storage
40: sensor position storage unit 50: student table position storage unit
60_1,60_2,60_3,... , 60_N-2,60_N-1,60-N: Student's Table
70: input unit 80: control unit
81: fixed object storage WB: whiteboard (or blackboard)
T: Instructor Table

Claims

Each is given a unique identifier (ID), and when an object located in the front object detection area is detected, an object detection signal including the identifier (ID) is output, and a white board (or blackboard) of a classroom (WB) A plurality of ultrasonic sensors 10_1, 10_2, 10_3,..., 10_N-2, 10_N-1, 10-N disposed in a state spaced apart from each other at a predetermined interval along the lower portion thereof;
PTZ camera installed on the ceiling of lecture room and equipped with autofocus function, and performs PTZ function by recording command signal including sensor position information to track lecturer's location while including lecturer's voice. A camera 20 for capturing a question image including a question voice of the learner while tracking the location of the learner by performing a PTZ function according to a recording command signal including the table location information of the learner;
An image storage unit (30) for recording a lecture image of the lecturer and a question image of the student taken by the camera (20);
A sensor position storage unit 40 for storing position information of the plurality of ultrasonic sensors 10_1, 10_2, 10_3..., 10_N-2, 10_N-1, 10-N, each of which is given a unique identifier ID;
Student table location information storage unit 50 for storing location information of a plurality of student tables 60_1, 60_2, 60_3, ..., 60_N-2, 60_N-1, 60-N each having a unique identifier ID. ;
Object detection initialization signal to detect an immovable fixed object located in front of the classroom white board (or blackboard) (WB), and detect an instructor moving up and down in front of the classroom white board (or blackboard) (WB) Instructor detection signal for selecting a plurality of student tables (60_1, 60_2, 60_3, ..., 60_N-2, 60_N-1, 60-N) that are located in the classroom and each have a unique identifier (ID). An input unit 70 outputting a table selection signal; And
When the object detection initialization signal is input, the plurality of ultrasonic sensors 10_1, 10_2, 10_3..., 10_N-2, 10_N-1, 10-N are driven, and each of them does not move in the object detection area in front of each other. When the fixed object is detected and an object detection signal including an identifier (ID) is output, the ultrasonic sensor 10_1, 10_2, 10_3..., 10_N-2, 10_N-1, 10-N are stored in the fixed object storage unit 81. And store the fixed object detection information, and when the instructor detection signal is input, drives the plurality of ultrasonic sensors 10_1, 10_2, 10_3…, 10_N-2, 10_N-1, 10-N, and each of them is in front of its own. In the object detection area of the fixed object storage unit 81 detects the fixed object or the instructor moving around the fixed object is stored in the fixed object storage information 81 and outputs an object detection signal including an identifier (ID) to detect the moving instructor If only one object detection signal is selected, the corresponding object detection signal A recording command signal including the position information of the ultrasonic sensors 10_1, 10_2, 10_3, ..., 10_N-2, 10_N-1, 10-N is applied to the camera 20 so that the camera 20 performs the PTZ function. Perform a video recording the lecture image including the lecture voice of the lecturer while tracking the location of the lecturer, and then record the lecture image in the image storage unit 30, or when the table selection signal is input, the table selection signal is input. The camera 20 provides a PTZ function by applying a recording command signal including the position information of the student tables 60_1, 60_2, 60_3, ..., 60_N-2, 60_N-1, 60-N to the camera 20. A controller 80 for capturing a question image including the question voice of the learner while tracking the location of the learner and recording the question image in the image storage unit 30;
Automatic location tracking and recording system, characterized in that consisting of.

Each is given a unique identifier (ID), and when an object located in the front object detection area is detected, an object detection signal including the identifier (ID) is output, and a white board (or blackboard) of a classroom (WB) A plurality of ultrasonic sensors 10_1, 10_2, 10_3,..., 10_N-2, 10_N-1, 10-N disposed in a state spaced apart from each other at a predetermined interval along the lower portion thereof;
PTZ camera installed on the ceiling of lecture room and equipped with autofocus function, and performs PTZ function by recording command signal including sensor position information to track lecturer's location while including lecturer's voice. Or a plurality of cameras 20_1,..., 20_N which perform a PTZ function by recording command signals including the student table position information to track the student's location and take a question image including the voice of the student's question. ;
An image storage unit (30) for recording a lecture image of the lecturer and a question image of the student taken by the plurality of cameras (20_1, ..., 20_N);
A sensor position storage unit 40 for storing position information of the plurality of ultrasonic sensors 10_1, 10_2, 10_3..., 10_N-2, 10_N-1, 10-N, each of which is given a unique identifier ID;
Student table location information storage unit 50 for storing location information of a plurality of student tables 60_1, 60_2, 60_3, ..., 60_N-2, 60_N-1, 60-N each having a unique identifier ID. ;
Object detection initialization signal for detecting an immovable fixed object located in front of the white board (or blackboard) WB of the classroom, a camera selection signal for selecting any one of the plurality of cameras 20_1, ..., 20_N, and the classroom Instructor detection signal for detecting instructors moving from front to back of white board (or blackboard) (WB) of a plurality of students (60_1,60_2) An input unit 70 for outputting a table selection signal for selecting .60_3,..., 60_N-2, 60_N-1, 60-N; And
When the object detection initialization signal is input, the plurality of ultrasonic sensors 10_1, 10_2, 10_3..., 10_N-2, 10_N-1, 10-N are driven, and each of them does not move in the object detection area in front of each other. When the fixed object is detected and an object detection signal including an identifier (ID) is output, the ultrasonic sensor 10_1, 10_2, 10_3..., 10_N-2, 10_N-1, 10-N are stored in the fixed object storage unit 81. And store the fixed object detection information for each of the plurality of ultrasonic sensors 1010, 10_2, 10_3, 10_N-2, 10_N-1, 10-N when the instructor detection signal is input while the camera selection signal is input. ) And each of them detects a fixed object in which the fixed object detection information is stored in the fixed object storage unit 81 or an instructor moving up and down in the object detection area in front of each other, and includes an object including an identifier thereof. Outputting a detection signal detects an object that detects a moving instructor The camera corresponding to the camera selection signal may include a recording command signal including position information of the ultrasonic sensors 10_1, 10_2, 10_3..., 10_N-2, 10_N-1, 10-N indicated by the corresponding object detection signal. 20_1,…, 20_N) and the corresponding cameras 20_1,…, 20_N perform the PTZ function to track the position of the instructor while capturing the lecture image including the lecture voice of the instructor, and then record the lecture image. If the table selection signal is inputted while recording to the storage unit 30 or the camera selection signal is input, the student tables 60_1, 60_2, 60_3, ..., 60_N-2, 60_N-1 indicated by the corresponding table selection signal. The recording command signal including the position information of, 60-N is applied to the cameras 20_1, ..., 20_N corresponding to the camera selection signal, and the corresponding cameras 20_1, ..., 20_N perform the PTZ function. Keep track of your location and include your students' questions After the shot the question image control unit 80 to record the image in question and the image storage section 30;
Automatic location tracking and recording system, characterized in that consisting of.

According to claim 1 or claim 2, The input unit 70 is a user interface (UI) screen for selectively outputting the object detection initialization signal, the camera selection signal, the instructor detection signal, the table selection signal Or a keyboard connected to a provided monitor or a touch button of a touch screen that provides the user interface (UI) screen.