KR101377665B1 - Portable smart video studio system for u-learning contents production - Google Patents

Portable smart video studio system for u-learning contents production Download PDF

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Publication number
KR101377665B1
KR101377665B1 KR1020130028714A KR20130028714A KR101377665B1 KR 101377665 B1 KR101377665 B1 KR 101377665B1 KR 1020130028714 A KR1020130028714 A KR 1020130028714A KR 20130028714 A KR20130028714 A KR 20130028714A KR 101377665 B1 KR101377665 B1 KR 101377665B1
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lecture
information
lecturer
projection surface
camera
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KR1020130028714A
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Korean (ko)
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김영호
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김규미
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/222—Studio circuitry; Studio devices; Studio equipment
    • H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects

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  • General Engineering & Computer Science (AREA)
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  • General Physics & Mathematics (AREA)
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  • General Health & Medical Sciences (AREA)
  • Educational Administration (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Economics (AREA)
  • Human Computer Interaction (AREA)
  • Human Resources & Organizations (AREA)
  • Marketing (AREA)
  • Primary Health Care (AREA)
  • Strategic Management (AREA)
  • General Business, Economics & Management (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

The present invention relates to a portable smart video studio system for producing U-learning contents, which is controlled according to location information input from a user, and is provided with a lecture terminal capable of inputting, storing, and outputting lecture data, and connected to the lecture terminal. A lecture information output device configured to output lecture information to an outside and form a projection surface on which image information is projected; And a writing information input device for detecting a contact position of the writing tool on the projection surface and transmitting the writing information to the lecturer terminal, wherein the lecturer terminal stores the contact trace according to the change of the contact position as writing information and the lecture data. And an image processing module for transmitting lecture information including the writing information to the lecture information output device, and a first lecture storage module for storing the lecture information in a memory device.
According to the present invention, by simply connecting to a beam projector or TV, etc., the lecture data and the written contents can be automatically stored, and the lecture progress and contents production are possible in various spaces, and the beneficial effect of effectively recording and storing the lecture contents without any additional personnel. There is.

Description

PORTABLE SMART VIDEO STUDIO SYSTEM FOR U-LEARNING CONTENTS PRODUCTION}

The present invention relates to a portable smart video studio system for the production of U-learning content, and more particularly, because it can be implemented by connecting a conventional beam projector or a TV to a PC, lecture progress and content production can be performed in various places. The present invention relates to a portable smart video studio system for the production of U-learning contents that can be recorded unattended because no additional personnel are required for lecture recording.

In general, U-LEARNING is defined as an educational form that allows students to learn anytime, anywhere in their daily lives, regardless of time, place or environment, based on the ubiquitous learning environment. In other words, it can be seen as an online education in the ubiquitous computing environment represented by PDAs, smartphones, and DMB.

However, in the case of the existing VOD broadcasting recording system, a large number of personnel such as directors, cameramen, and editing specialists were put into the recording for the expensive broadcasting recording equipment. Therefore, there is a disadvantage in that high cost and time are required for producing one content.

In this regard, Korean Patent Laid-Open Publication No. 2002-0021279 (hereinafter, referred to as “prior art 1”) includes a blackboard and a sensor of the blackboard having sensors arranged at predetermined intervals along an edge so as to check the contents to be processed. An electronic blackboard system including a data processing means for receiving a sensed data and checking the contents processed on a blackboard and processing the same according to a purpose is disclosed.

In Republic of Korea Patent Publication No. 559726 (hereinafter referred to as 'prior art 2'), a plurality of sensors for detecting the position of the instructor, arranged in a row at a constant height and a constant interval on one side of the platform, zoom in / zoom out function and tilting , Panning operation is possible, video camera that can be taken while tracking the instructor according to the control command, and various settings such as system setting at the time of installation and user-defined if necessary can be set, and instructor position by receiving the detection signal of the sensor during operation An 'automatic instructor tracking system' having a controller for controlling the video camera to move the video camera is disclosed.

Republic of Korea Patent No. 668491 (hereinafter 'prior art 3'), a plurality of pressure sensors for detecting the position of the instructor is arranged at regular intervals inside the mat member laid on the floor of the classroom; A camera for shooting while tracking the instructor according to the control command; Disclosed is a 'mat-type instructor position tracking system' comprising a controller for receiving a detection signal from the pressure sensor, and transmits a control command based on the detected signal to the camera.

However, in case of the prior art 1, there was a problem of introducing an expensive electronic teaching system in order to store the lecture data and written contents together. In the case of the prior arts 2 and 3, the lecture video was recorded while tracking the position of the lecturer. In order to have a sensor attached to the wall or floor, lectures were only possible in a specific space.

Republic of Korea Patent Publication No. 2002-0021279 'Electronic blackboard system' Republic of Korea Patent Publication No. 559726 'Automatic Instructor Tracking System and Tracking Method' Republic of Korea Patent Publication No. 668491 'Mat Instructor Location Tracking System'

The present invention has been made to solve the problems described above, it is possible to implement by connecting an existing beam projector or TV to a PC without the introduction of expensive equipment such as electronic desks or electronic blackboards, and not a specific place The aim is to provide a portable smart video studio system for the production of U-learning contents that can be taught and produced in various spaces such as blackboards, walls or monitors.

In addition, the lecturer can easily control the lecturer terminal by touching the projection surface with the electronic pen during the lecture, without the need for the lecturer to directly manipulate the lecturer terminal such as a PC or a separate operator. Another object is to provide a portable smart video studio system for the production of U-learning content that enables dynamic lecture recording by automatically moving a PTZ camera.

In order to achieve the above object, a portable smart video studio system for producing U-learning content according to the present invention includes a lecture terminal that is controlled according to location information input from a user, and that inputs, stores, and outputs lecture data. A lecture information output device connected to the lecturer terminal to output lecture information to the outside, and to form a projection surface on which image information is projected; And a writing information input device for detecting a contact position of the writing tool on the projection surface and transmitting the writing information to the lecturer terminal, wherein the lecturer terminal stores the contact trace according to the change of the contact position as writing information and the lecture data. And an image processing module for transmitting lecture information including the writing information to the lecture information output device, and a first lecture storage module for storing the lecture information in a memory device.

In this case, the writing instrument is an electronic pen that emits light of a predetermined wavelength when a lecturer contacts the projection surface, and the writing information input device includes an optical filter capable of transmitting only light having a predetermined wavelength. It is preferable to include an optical sensor for detecting the contact position of the electronic pen based on the transmitted light.

In addition, the lecture terminal terminal, the screen calibration module for detecting the position coordinates of the projection surface in the sensing image of the optical sensing camera and converts the position coordinates of the detected projection surface to the position coordinates of the output screen of the lecturer terminal, and the conversion It is preferable that a device control module for receiving the position coordinates of the output screen to output the position information for controlling the lecturer terminal.

The apparatus may further include a PTZ (Pan Tilt Zoom) camera for capturing the lecturer carrying the writing instrument while driving by the driving device. The lecturer terminal may further include: a lecturer terminal configured to store the imaging information acquired by the PTZ camera in a memory device; It is preferable that the storage module of two lectures is further provided.

In addition, it is preferable that the lecturer terminal further includes a PTZ camera control module for controlling the driving device according to the contact position of the electronic pen detected by the optical sensing camera.

In particular, the PTZ camera control module includes: an area coordinate unit configured to store the position coordinates for each sector by dividing the projection surface into a plurality of sectors after detecting the position coordinates of the projection surface in the sensing image of the optical sensing camera; Preferably, a camera coordinate unit in which control values of the driving device designated for each sector are stored, and a controller for detecting a sector including a contact position of the electronic pen and outputting the designated control value to the driving device.

The lecturer terminal may further include a transmission module for uploading lecture information or image pickup information stored in the memory device to a server through a wired / wireless communication network.

According to an embodiment of the present invention as described above, the lecture terminal terminal, the lecture information output device and the handwriting information input device, and the lecture terminal terminal is provided with an image processing module and the first lecture storage module, the beam for lecture or presentation By simply connecting to a projector, an electronic board, or an electronic teaching desk, it has the advantage of automatically saving lecture materials and notes.

In addition, the writing instrument is an electronic pen that emits light of a predetermined wavelength, and the writing information input device is composed of an optical sensing camera equipped with an optical filter, thereby eliminating the need to introduce expensive equipment such as an electronic desk or an electronic blackboard. It can be implemented by connecting a projector or TV to a PC, and there is an advantage that lectures and contents can be produced in various places such as a blackboard, a wall, or a monitor, not a specific place.

In addition, the screen calibration module and the device control module are provided so that the lecturer can easily control the lecturer terminal by contacting the projection surface with an electronic pen during the lecture without directly manipulating the lecturer terminal such as a PC or having a separate operator. There are advantages to it.

In addition, the PTZ camera control module is provided to control the driving device of the PTZ camera according to the contact position of the electronic pen detected by the light sensing camera, so that the current position of the lecturer can be identified in real time and the PTZ camera is automatically moved to record the lecture dynamically. There is a possible advantage.

In addition, the lecture information or the imaging information stored in the memory device is automatically transmitted to the server through the wired and wireless communication network, the attendees have the advantage of taking a lecture by connecting to the server anytime, anywhere through a smart terminal.

1 is a view schematically showing the overall configuration of a portable smart video studio system according to an embodiment of the present invention,
2 is a block diagram of a portable smart video studio system according to an embodiment of the present invention;
3 is a circuit diagram and an operation state diagram of the electronic pen according to an embodiment of the present invention;
4 is a view for explaining a coordinate conversion process through the screen calibration module according to an embodiment of the present invention;
5 and 6 are a flow chart showing a coordinate conversion process through the screen calibration module according to an embodiment of the present invention,
7 and 8 are views for explaining a control process of the PTZ camera through the PTZ camera control module according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, which are intended to describe in detail enough to be able to easily carry out the invention by those skilled in the art to which the present invention belongs, This does not mean that the technical spirit and scope of the present invention is limited.

1 is a view schematically showing the overall configuration of a portable smart video studio system 100 according to an embodiment of the present invention, Figure 2 is a view of the portable smart video studio system 100 according to an embodiment of the present invention 3 is a block diagram, and FIG. 3 is a circuit diagram and an operation state diagram of the electronic pen 31 according to an embodiment of the present invention.

The portable smart video studio system 100 according to an exemplary embodiment of the present invention includes a lecture terminal 10, a lecture information output device 20, and a writing information input device 30, and the lecture terminal 10 includes an image. The processing module 11 and the first lecture storage module 12 are provided.

The lecturer terminal 10 includes a PC or a smart device that is controlled according to the location information of the mouse pointer input from the user or the location information of the touch location on the touch screen. Enables input, storage and output of lecture data. In the present invention, since it can be implemented by a conventional PC or the like, unlike a conventional electronic blackboard system, lecture materials written in PowerPoint, Korean, or Word can be used as teaching materials without modification.

The lecture information output device 20 is connected to the lecture terminal 10 described above to output lecture information to the outside and form a projection surface 21 onto which image information is projected. For example, a beam projector or a TV is applicable.

The writing information input device 30 detects the contact position when the lecturer contacts the writing implement on the projection surface 21 and transmits the contact position to the lecturer terminal 10.

In particular, in the portable smart video studio system 100 according to an embodiment of the present invention, the writing tool is an electronic pen 31 and the writing information input device 30 is composed of an optical sensing camera 33.

The electronic pen 31 is configured to emit light having a predetermined wavelength when the lecturer contacts the projection surface 21. Here, the electronic pen 31 may employ various known electronic pens. As described above, when the infrared LED supported by the spring is pressed, the infrared electronic pen may be configured to emit infrared rays.

The light detecting camera 33 includes an optical filter 35 capable of transmitting only light having a predetermined wavelength, and detects a contact position of the electronic pen 31 based on the light transmitted through the optical filter 35. .

The image processing module 11 stores the contact trajectory according to the change in the contact position of the writing instrument transmitted through the writing information input device 30 including the optical sensing camera 33 and the like as writing information. The lecture information including the writing information is transmitted to the lecture information output apparatus 20.

The first lecture storage module 12 stores the lecture information thus processed in the memory device 13 to be provided to the learners.

Therefore, it can be connected to an existing beam projector or TV, and thus, lectures and contents can be produced in various spaces such as a blackboard, a wall, or a monitor, and a failure rate is lower and easier to install than an electronic board or an electronic table.

4 is a view illustrating a coordinate conversion process through the screen calibration module 14 according to an embodiment of the present invention, and FIGS. 5 and 6 illustrate a screen calibration module 14 according to an embodiment of the present invention. This is a flow chart showing the process of coordinate transformation through.

The lecture terminal 10 of the portable smart video studio system 100 according to an embodiment of the present invention further includes a screen calibration module 14 and a device control module 15.

The screen calibration module 14 detects the position coordinates of the projection surface 21 in the sensed image of the optical sensing camera 33 and positions the position coordinates of the detected projection surface 21 on the output screen of the lecture terminal 10. To.

4 and 5, the lecturer first projects the calibration image drawn on the entire output screen of the lecturer terminal 10 onto the projection surface 21 through the lecture information output device 20, and then the lecturer views the projection surface 21 on the projection surface 21. The electronic pen 31 receives the coordinates of the edge position of the projection surface 21 in the sensing image of the light sensing camera 33. Through this, the position coordinates corresponding to the range of the entire area of the projection surface 21 can be calculated. If necessary, a process of correcting a distorted image through a distortion correction algorithm may be involved.

Thereafter, the position coordinates of the projection surface 21 are converted to the position coordinates of the output screen of the lecturer terminal 10 through the preset coordinate correlation coefficient. The coordinate correlation coefficient may be formed in a matrix form. Therefore, the position of the electronic pen 31 on the projection surface 21 and the position of the mouse pointer on the output screen of the lecturer terminal 10 are 1: 1 matched. Also, as shown in FIG. 6, when the coordinate correlation coefficient cannot be found by automatic calibration for the first three or more times, the coordinate correlation coefficient may be set through manual calibration.

The device control module 15 receives the position coordinates of the output screen converted through the screen calibration module 14 and outputs position information for controlling the lecturer terminal 10. As a result, when the lecturer contacts the projection surface 21, the mouse pointer of the lecturer terminal 10 is activated in conjunction with the lecturer, and PowerPoint control, screen capture, screen zooming, and open community (facebook, twitter, blog, etc.) are performed. Work such as switching the linked screen can be freely performed during the lecture.

Therefore, the lecturer can easily control the lecturer terminal 10 in such a way that the lecturer contacts the projection surface 21 with the electronic pen 31 during the lecture, without the need for the lecturer to directly manipulate the lecturer terminal 10 such as a PC or a separate operator. can do.

7 and 8 are views for explaining the control process of the PTZ camera 40 through the PTZ camera control module 17 according to an embodiment of the present invention.

The portable smart video studio system 100 according to an embodiment of the present invention further includes a PTZ (Pan Tilt Zoom) camera for capturing a lecturer carrying a writing implement while tracking by the driving device 41. 10) the second lecture storage module 16 for storing the captured image information obtained by the PTZ camera 40 in the memory device 13 is further provided.

The information captured by the PTZ camera 40 may be stored in the memory device 13 separately from the above-described lecture information. However, the recording information may be mixed in real time according to the lecturer's operation. As a result, an additional video editing process is unnecessary, thereby reducing the editing time and the editing cost.

In addition, the PTZ camera 40 of the portable smart video studio system 100 according to an embodiment of the present invention drives the PTZ camera 40 according to the contact position of the electronic pen 31 detected from the light sensing camera 33. A PTZ camera control module 17 for controlling the device 41 is provided. This makes it possible to record the lecturer's current location in real time and to record the lecture dynamically.

In particular, the PTZ camera control module 17 according to an embodiment of the present invention is composed of an area coordinate unit 171, a camera coordinate unit 173, and a controller 175.

The area coordinate unit 171 detects the position coordinates of the projection surface 21 in the sensing image of the optical sensing camera 33 and partitions the projection surface 21 into a plurality of sectors to store the position coordinates for each sector. The camera coordinate unit 173 stores control values of the PTZ camera driving device 41 designated for each of the plurality of sectors. In addition, the controller 175 detects a sector including a contact position of the electronic pen 31 and outputs a designated control value to the driving device 41 of the PTZ camera 40.

Hereinafter, the process of driving the PTZ camera 40 through the PTZ camera control module 17 will be described with reference to FIGS. 7 and 8.

First, the position information value at which the center of the PTZ camera view area is positioned at the top, bottom, left, and right edges of the projection surface 21 is calculated, and the control value of the PTZ camera driving device 41 corresponding thereto is designated.

At this time, when the control value of the PTZ camera 40 is matched 1: 1 with the coordinate value of the projection surface 21, an unnatural image is produced due to frequent movement of the PTZ camera 40.

In order to solve this problem, in the present invention, the area coordinate unit 171 stores the position coordinates for each sector by dividing the projection surface 21 into a plurality of sectors (areas A, B, and C in FIG. 9), and the camera coordinate unit 173. ) Stores the control value of the PTZ camera driving device 41 for each sector of the area coordinate unit 171, and based on this, the control unit 175 detects the sector in which the electronic pen 31 is in contact with the control value of the corresponding sector. It was outputted to the driving device 41 of the PTZ camera so that the lecture contents of the current lecturer can be photographed through natural camera movement. In addition, the number of sectors to be divided can be adjusted according to the recording environment, it is preferable to set inversely proportional to the distance between the lecturer and the PTZ camera.

Meanwhile, the lecturer terminal 10 of the portable smart video studio system 100 according to an embodiment of the present invention has a transmission module for uploading lecture information or image capture information stored in the memory device 13 to the server 50 through a wired or wireless communication network. 18 is further provided.

Through this, files stored in the memory device 13 may be automatically uploaded to the VOD server 50 after recording and broadcasting are terminated, and lecture information may be uploaded to an open community such as Twitter or Facebook.

Therefore, the student can take a lecture through the server 50 by searching for lecture information in real time through a smart device such as a smartphone or a smart pad anytime, anywhere.

As described above, the portable smart video studio system 100 for producing U-learning contents of the present invention can be easily connected to a beam projector or a TV to automatically store lecture materials and writing contents, and lecture progress and contents production in various spaces. Not only is this possible, it also has the beneficial effect of effectively recording and storing lecture content without requiring additional personnel.

100: Portable Smart Video Studio System
10: lecturer terminal 11: image processing module
12: first lecture storage module 13: memory device
14: screen calibration module 15: device control module
16: Lesson 2 storage module 17: PTZ camera control module
171: region coordinate unit 173: camera coordinate unit
175 control unit 18 transfer module
20: lecture information output device 21: projection surface
30: handwriting information input device 31: electronic pen
33: light sensing camera 35: optical filter
40: PTZ camera 41: drive device
50: Server

Claims (7)

Lecturer terminal that is controlled according to the location information of the mouse pointer input from the user or the location information on the touch screen, and capable of inputting, storing and outputting lecture data; and
A lecture information output device connected to the lecturer terminal to output lecture information to the outside, and to form a projection surface on which image information is projected; Wow
A handwriting information input device which senses a contact position of a writing instrument on the projection surface and transmits it to the lecturer terminal; And
Includes a PTZ (Pan Tilt Zoom) camera to shoot while tracking the lecturer carrying a writing implement by the drive device,
The lecturer terminal,
An image processing module for storing the contact trace according to the change of the contact position as handwriting information and transmitting the lecture information including the handwriting information to the lecture data to the lecture information output device; and storing the lecture information in a memory device. The first lecture storage module is provided,
The writing instrument is an electronic pen which emits light of a predetermined wavelength when a lecturer contacts the projection surface, and the writing information input device includes an optical filter capable of transmitting only light having a predetermined wavelength. It includes a light detection camera for detecting the contact position of the electronic pen based on the transmitted light,
The lecturer terminal, after projecting the calibration image drawn on the entire output screen of the lecturer terminal in the sensing image of the optical sensing camera to the projection surface through the lecture information output device, the lecturer contacts the electronic pen on the projection surface to the A screen calibration module for detecting a position coordinate and converting the detected coordinates of the projection plane into a position coordinate of an output screen of the lecturer terminal, and receiving the position coordinates of the output screen converted through the screen calibration module. A device control module for outputting controllable position information, a second lecture storage module for storing the imaging information acquired by the PTZ camera in a memory device, and
A PTZ camera control module is further provided to control the driving device according to the contact position of the electronic pen detected by the light sensing camera.
The PTZ camera control module,
An area coordinate unit for partitioning the projection surface into a plurality of sectors and storing the position coordinates for each sector after detecting the position coordinates of the projection surface in the sensing image of the optical sensing camera; A camera coordinate unit in which control values of a driving device are stored, and a controller for detecting a sector including a contact position of the electronic pen and outputting a specified control value to the driving device,
The lecturer terminal,
And a transmission module for uploading lecture information or image pickup information stored in the memory device to a server through a wired / wireless communication network. delete delete delete delete delete delete
KR1020130028714A 2013-03-18 2013-03-18 Portable smart video studio system for u-learning contents production KR101377665B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090094987A (en) * 2008-03-04 2009-09-09 주식회사 다날시스템 Lecture system using of porjector and writing method
KR20090103384A (en) * 2008-03-28 2009-10-01 전자부품연구원 Network Apparatus having Function of Space Projection and Space Touch and the Controlling Method thereof
KR20100123445A (en) * 2009-05-15 2010-11-24 이정훈 A video manless auto filming system by tracing a sensor
KR20110012217A (en) * 2009-07-30 2011-02-09 성균관대학교산학협력단 Writing discernment system using electric pen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090094987A (en) * 2008-03-04 2009-09-09 주식회사 다날시스템 Lecture system using of porjector and writing method
KR20090103384A (en) * 2008-03-28 2009-10-01 전자부품연구원 Network Apparatus having Function of Space Projection and Space Touch and the Controlling Method thereof
KR20100123445A (en) * 2009-05-15 2010-11-24 이정훈 A video manless auto filming system by tracing a sensor
KR20110012217A (en) * 2009-07-30 2011-02-09 성균관대학교산학협력단 Writing discernment system using electric pen

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