WO2015034122A1 - Procédé et terminal de synchronisation d'images d'une pluralité d'action-cams - Google Patents

Procédé et terminal de synchronisation d'images d'une pluralité d'action-cams Download PDF

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Publication number
WO2015034122A1
WO2015034122A1 PCT/KR2013/008290 KR2013008290W WO2015034122A1 WO 2015034122 A1 WO2015034122 A1 WO 2015034122A1 KR 2013008290 W KR2013008290 W KR 2013008290W WO 2015034122 A1 WO2015034122 A1 WO 2015034122A1
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WO
WIPO (PCT)
Prior art keywords
information
terminal
server
synchronization
group
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Application number
PCT/KR2013/008290
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English (en)
Korean (ko)
Inventor
이동채
유수근
Original Assignee
주식회사 모브릭
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Publication of WO2015034122A1 publication Critical patent/WO2015034122A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
    • H04N21/4223—Cameras
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/242—Synchronization processes, e.g. processing of PCR [Program Clock References]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/21—Server components or server architectures
    • H04N21/218—Source of audio or video content, e.g. local disk arrays
    • H04N21/21805—Source of audio or video content, e.g. local disk arrays enabling multiple viewpoints, e.g. using a plurality of cameras
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/85—Assembly of content; Generation of multimedia applications
    • H04N21/854—Content authoring
    • H04N21/8547—Content authoring involving timestamps for synchronizing content

Definitions

  • the present invention relates to a digital broadcasting service, and more particularly, to an apparatus and method for synchronizing video signals in providing a plurality of action cam images.
  • IPTV which allows a user to selectively receive desired contents through a high-speed communication network, has become a major field of the broadcasting communication industry.
  • the action cam of the present invention is a name that refers to a camcorder (cam coder) fixedly mounted on a moving object to capture an image.
  • the existing multi-angle service is difficult to watch images outside the TV screen because the broadcast station can only watch the video provided by editing to the TV screen.
  • the broadcast station can only watch the video provided by editing to the TV screen.
  • the angles they want to see are different from each other, when one viewer selects a specific camera angle, there is a problem that prevents others from watching TV.
  • a method of providing a plurality of action cam images comprises: transmitting, by a plurality of terminals photographing images of different angles, respective terminal information to a server, wherein the server receives the received terminal information. Determining whether the terminals are included in a preset shooting group, transmitting, by the server, synchronization information and a control signal to terminals determined to be included in the shooting group; The terminal encoding the photographed image into a digital image, the terminal performing marking on the photographed image based on the received synchronization information to generate marking information, and the terminal Transmitting the encoded image and marking information to the server.
  • the terminal for providing a plurality of action cam images the camera unit for photographing the external image, the encoding unit for encoding the image taken by the camera unit, the terminal information of the terminal server And a communication unit for receiving the synchronization information and the control signal, which are determined by the terminal as a terminal included in the preset shooting group, and performing marking on the server based on the received synchronization information.
  • each action cam screen is synchronized with each other at the same time.
  • the screen of can be provided to the user.
  • FIG. 1 is a diagram illustrating a system for providing multiple action cam screens according to an exemplary embodiment of the present invention.
  • FIG. 2 is a flowchart illustrating steps of a method of providing a plurality of action cam images according to an exemplary embodiment of the present invention.
  • FIG. 3 is a block diagram showing the configuration of multiple action cam video providing terminals according to an embodiment of the present invention.
  • FIG. 4 is a diagram illustrating a communication process between a plurality of action cam video providing terminals and a server according to an exemplary embodiment of the present invention.
  • FIG. 5 is a diagram illustrating a communication process between a plurality of action cam video providing terminals and a server according to another embodiment of the present invention.
  • unit and device for components used in the following description are merely given in consideration of ease of preparation of the present specification, and the “unit” and “device” may be used interchangeably with each other. It can be designed in hardware or software.
  • FIG. 1 is a diagram illustrating a system for providing multiple action cam screens according to an exemplary embodiment of the present invention.
  • the plurality of image capturing apparatuses 100 may be connected to the server 200 to perform an operation for providing a plurality of action cam screens. That is, when a plurality of video recording apparatuses captures images of the same event at different locations, and transmits the captured images to the server, the server provides the subscribers with multiple action cam screens including the plurality of images. In addition, several action cam screen providing services may be performed.
  • the server 200 described in this drawing and the following drawings is a sync server and may be distinguished from a streaming server for broadcasting.
  • the server 200 receives each image from the plurality of attached video recording apparatuses 100 By generating the action cam screen, the user can watch the game from each player's point of view.
  • An image capturing apparatus 100 and a method of providing a plurality of action cam images using the same will be described in detail below.
  • FIG. 2 is a flowchart illustrating steps of a method of providing a plurality of action cam images according to an exemplary embodiment of the present invention.
  • multiple action cam images may be provided through the steps as shown in the drawing.
  • these steps may be performed using a terminal as shown in FIG. 3.
  • a plurality of terminals respectively photographing images of different angles transmit respective terminal information to a server (S101).
  • a plurality of shooting terminals may be used to acquire a shooting screen of different angles, and in order to generate a plurality of action cam screens through the plurality of shooting terminals, Information can be sent to the server.
  • a mobile communication network may be used as the transmission means. That is, a 3G communication network or an LTE communication network may be used, and for this purpose, the terminal should be subscribed to the mobile communication network.
  • the information may be transmitted to the server through Wi-Fi communication.
  • Wi-Fi communication various communication formats capable of transmitting and receiving data between the server and the terminal are not limited to the communication means.
  • the server determines whether the plurality of terminals are terminals included in a preset photographing group based on the received terminal information (S102).
  • the server may determine whether a terminal is a terminal included in a preset shooting group.
  • the shooting group may be, for example, a team A group, and in this case, all the shooting terminals attached to the helmets of the players of the team A may be included in the shooting group.
  • the method may include determining whether the plurality of terminals are terminals included in a preset shooting group, and when information on a terminal is pre-registered with the same group name (eg, group A) in the server.
  • the terminal may be determined to be a terminal included in the preset shooting group. That is, for example, the server may store a group information table, and the table may include information items of target terminals included in the table.
  • the server may update the pre-stored terminal information when there is a difference between the received terminal information and the pre-stored terminal information. That is, the server can always keep the terminal information up to date.
  • the information on the terminal when the information on the terminal is not pre-registered with the same group name in the server, it may be determined that the terminal is not included in the preset shooting group.
  • a new new group can be created based on the terminal information of the terminal, and the terminal can be selected as a master terminal. That is, a new photographing group may be configured around the terminals not included in the photographing group.
  • the server may generate a group table for the created group, and store information on a synchronization period among the information on the master terminal in the group table. Therefore, a new group is created, and information about the new group can be stored and utilized in the server.
  • the server may transmit information about the generated groups to the terminal that transmitted the request signal. . That is, the terminal without a preset photographing group may request all group information or pre-generated group information corresponding to a preset interest of interest to the server, and transmit a subscription request signal to the server with reference to this.
  • the subscription request signal when the subscription request signal is received, transmits a recording group join permission signal of the another terminal to the master terminal.
  • the master terminal may transmit a subscription permission signal or a subscription permission signal to the server after determining whether to subscribe based on a predetermined criterion.
  • the master terminal when the subscription request signal is transmitted, displays a related menu on a display unit and receives a subscription permission signal or a subscription denied signal by receiving a signal indicating whether to permit subscription from a user through a user interface unit. Can be created and sent.
  • any one of the plurality of terminals the Master mode is On (On), the other terminal is the Master Mode (Master Mode) is Off (Off) In this case, when the subscription request signal is transmitted, the subscription permission signal is automatically generated and transmitted.
  • the server when the subscription permission signal of the terminal is received from the master terminal, the server includes a terminal that transmits the subscription request signal to the generated group as a slave terminal to configure and operate a shooting group. Can be. Accordingly, the digital image photographed by the master terminal and the slave terminal may be marked in the master terminal and the slave terminal according to the marking period reference of the generated group. Therefore, synchronization can be performed based on this marking information.
  • the server may control to stop the synchronization operation by transmitting the synchronization end signal to each slave terminal.
  • the server transmits synchronization information and a control signal to the terminals determined to be included (S103).
  • the terminal in transmitting the synchronization information and the control signal, the terminal is determined to be included in the shooting group, the synchronization period information (eg, marking every 5 seconds) and the synchronization information transmission method information (marking) Transmission of a control signal including at least one of synchronization information including at least one of the presence / absence determination and shooting instruction information (eg, recording start / stop / end signal) and shooting information (frames per second, color, size information); have.
  • the synchronization information delivery method information may include information on whether to mark directly on the image photographed by the terminal or to store as separate marking information.
  • the process of transmitting the synchronization information and the control signal is performed in the server, transmitting the synchronization period information to the terminals determined to be included in the shooting group, and transmits the synchronization period information It may be determined whether the photographing preparation of the terminals is completed, and when the photographing preparation is completed, the photographing start signal may be transmitted to the terminals, and a response (ACK) signal may be received from the terminal transmitting the photographing start signal. That is, the server can control the start of shooting.
  • an external image is photographed through the terminal (S104).
  • the terminal encodes the photographed image into a digital image and generates marking information by performing marking on the photographed image based on the received synchronization information (S105).
  • the encoded image and marking information are transmitted to the server (S106).
  • the marking may be performed on the encoded image and may be encoded after the marking is performed.
  • the information on the order is included in the image so that it can be grasped by the decoder.
  • the terminal in performing the marking, performs marking on the photographed image at a predetermined period based on synchronization information received from the server.
  • the terminal may transmit the mark information to the server according to a predetermined period based on the information received from the server.
  • the terminal in performing the marking, stores the marking information in the form of dummy data, that is, information on the number of synchronizations, information on time, and information on the image image itself. It can be inserted into an image and stored in the terminal and transmitted to the server.
  • the terminal in performing the marking, may store the mark information in a storage unit of the terminal according to a predetermined period based on the information received from the server, and in the terminal When encoding is completed, the completed encoded image and the mark information stored up to the completion point may be transmitted to the server.
  • marking information when marking is performed, marking information may be immediately transmitted to a server.
  • the subscriber terminal capable of playing the accumulated marking information on a streaming server and a video It can transmit to at least one of.
  • the separately existing streaming server according to the synchronization information generated by the marking, the streaming server waits until the synchronization time for a plurality of broadcast video, and then the marking information Remove the to transmit the synchronized video.
  • This operation may be performed by the video player in the subscriber terminal when the network situation is poor.
  • a specific image eg, an advertisement image
  • the server may receive the encoded image and marking information from each of the terminals, it may provide a number of action cam screen services by providing the received information to the user. That is, since the playback time of the captured images can be synchronized using the encoded image and the marking information, the user can smoothly receive several action cam screens through the streaming server or the video player in the user terminal.
  • FIG. 3 is a block diagram showing the configuration of multiple action cam video providing terminals according to an embodiment of the present invention.
  • the plurality of action cam video providing terminals 100 may include a camera unit 110, a synchronization unit 120, a communication unit 130, an encoding unit 140, a transmission unit 150, and a storage unit ( 160).
  • the configurations may be configured in hardware / modules. However, one module / unit may be configured to perform a function of another module / unit. That is, it can be integrated or detailed according to needs or purposes.
  • the camera unit 110 may capture an external image.
  • the aperture speed may be automatically adjusted according to the external brightness or the operation speed of the object.
  • the synchronizer 120 may generate marking information by performing marking based on the synchronization information received from the server. Embodiments related to marking have been described in detail with reference to FIG. 2.
  • the synchronization information corresponds to information for performing synchronization with other terminals photographing images of different angles at different positions through marking according to a predetermined period.
  • the synchronization unit 120 may perform marking on the photographed image at a predetermined period based on the synchronization information received by the terminal from the server.
  • the communication unit 130 may transmit terminal information of the terminal to a server, and receive synchronization information and a control signal transmitted from the server as determined by the terminal as a terminal included in a preset shooting group.
  • a mobile communication network may be used as a transmission means using a communication unit. That is, a 3G communication network or an LTE communication network may be used, and for this purpose, the terminal should be subscribed to the mobile communication network.
  • the information may be transmitted to the server through Wi-Fi communication.
  • various communication formats capable of transmitting and receiving data between the server and the terminal are not limited to the communication means.
  • the synchronization information may include at least one of synchronization period information and synchronization information delivery method information
  • the control signal may include at least one of photographing instruction information and photographing information
  • the encoder 140 may encode an image photographed by the camera unit.
  • Various encoding formats according to the MPEG standard may be used, and image formats other than the MPEG standard may also be used according to the terminal setting.
  • encoding may be performed by selecting a specific encoding format from a user.
  • the transmission unit 150 may control to transmit the encoded image and the marking information generated by the terminal to at least one of a streaming server and a subscriber terminal capable of playing a video through the communication unit.
  • the storage unit 160 may store the encoded image and marking information.
  • the communication unit 130 may transmit the encoded image and marking information stored in the storage unit to the server.
  • the storage unit may be configured with various storage means such as RAM, SSD, HDD, and the like.
  • FIG. 4 is a diagram illustrating a communication process between a plurality of action cam video providing terminals and a server according to an exemplary embodiment of the present invention.
  • the terminal 100 transmits an inclusion request command and group name information to be included in a shooting group to the server 200 (JOIN Group_Name and Member_Num).
  • the server 200 examines the information of the terminal 100 included in the pre-registered shooting group, and if there is a difference, updates and stores the information of the terminal stored in the server. , To transmit the synchronization period (Sync_Period) information to the terminal 100.
  • Sync_Period synchronization period
  • the server 200 transmits a recording start (Sync_Start) command to the terminal when an artificial judgment or completion of member configuration is detected.
  • a recording start (Sync_Start) command is received from the terminal in response to the recording start signal.
  • the terminal may start shooting and perform marking at a period based on the synchronization period information (eg, 5 seconds).
  • the synchronization period information eg, 5 seconds.
  • the recording starts simultaneously without the marking information at the start of shooting or generates the marking information only once at the start of the shooting.
  • the server 200 determines that it is time to end the shooting synchronization based on artificial or systemic determination, the server 200 transmits a recording stop (Sync_END) command to the terminal 100 to terminate the recording and end the marking. To indicate.
  • Sync_END recording stop
  • FIG. 5 is a diagram illustrating a communication process between a plurality of action cam video providing terminals and a server according to another embodiment of the present invention.
  • the terminal 100 may transmit a command (Master Group_Name and Sync_Info) to the server 200 to create a photographing group in which the terminal is a master terminal to the server 200.
  • Synchronization information including information on the master terminal 100 and synchronization period information may be included.
  • the server 200 may newly create a photographing group.
  • the group information request signal Get Group_Info for selecting a group for photographing synchronization may be transmitted from the other terminal 101 to the server 200.
  • the server 200 may correspondingly transmit information including the group name to the terminal 101.
  • the terminal 101 may transmit a join request signal JOIN Group_Name to a server in order to be included in a specific photographing group.
  • the server 200 may transmit a photographing group join permission signal JOIND Member_Info to the other terminal 101 to determine whether to allow the photographing group subscription to the master terminal 100. .
  • the master terminal 101 can determine whether or not the terminal 101 allows the shooting group. That is, the master terminal may transmit a subscription permission signal or a subscription permission signal to the server 200 after determining whether to subscribe based on a preset criterion. If the terminal 101 is subscribed, the terminal 101 is included in the photographing group as a slave terminal.
  • the master terminal may notify the other terminal 101 via the server 200 of the start recording control signal, and the master terminal 100 photographs.
  • the recording synchronization may be terminated by transmitting a recording end (Sync_End) command to the other terminal 101 through the server 200.
  • a new terminal is connected to the synchronization group during the synchronization shooting, the shooting group can be configured through the above steps.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Databases & Information Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

La présente invention synchronise des images d'une pluralité d'action-cams au moyen d'un procédé comprenant : la transmission d'informations sur chaque terminal à un serveur, par une pluralité de terminaux qui prennent des images sous différents angles dans différentes positions ; la détermination, par le serveur, d'après les informations transmises sur les terminaux, si chacun de la pluralité de terminaux est un terminal compris dans un groupe de prise de vues préconfiguré ; la transmission, par le serveur, d'informations de synchronisation et d'un signal de commande, aux terminaux qui sont déterminés comme étant compris dans le groupe de prise de vues ; l'encodage, par le terminal, des images prises pour obtenir des images numériques ; la génération, par le terminal, d'informations de marquage en exécutant un marquage sur les images prises d'après les informations de synchronisation reçues ; et la transmission, par le terminal, des images encodées et des informations de marquage au serveur.
PCT/KR2013/008290 2013-09-04 2013-09-13 Procédé et terminal de synchronisation d'images d'une pluralité d'action-cams WO2015034122A1 (fr)

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Application Number Priority Date Filing Date Title
KR10-2013-0106015 2013-09-04
KR20130106015A KR20150027532A (ko) 2013-09-04 2013-09-04 여러대의 액션캠 영상 동기화 제공방법 및 제공단말기

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108989900A (zh) * 2017-06-02 2018-12-11 中兴通讯股份有限公司 一种视频处理方法及终端

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KR20110001333A (ko) * 2009-06-30 2011-01-06 에이알비전 (주) 다수의 카메라센서를 이용한 가상 이미지가 합성된 방송영상의 송출 방법
KR20120035286A (ko) * 2010-10-05 2012-04-16 안영순 방송 영상의 선택 시청 기능을 제공하는 ｉｐｔｖ 방송 시스템 및 방법
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108989900A (zh) * 2017-06-02 2018-12-11 中兴通讯股份有限公司 一种视频处理方法及终端

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