WO2020050447A1 - Système et procédé de gestion de filigrane de contenu de vr au moyen d'une chaîne de blocs - Google Patents

Système et procédé de gestion de filigrane de contenu de vr au moyen d'une chaîne de blocs Download PDF

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Publication number
WO2020050447A1
WO2020050447A1 PCT/KR2018/011090 KR2018011090W WO2020050447A1 WO 2020050447 A1 WO2020050447 A1 WO 2020050447A1 KR 2018011090 W KR2018011090 W KR 2018011090W WO 2020050447 A1 WO2020050447 A1 WO 2020050447A1
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WO
WIPO (PCT)
Prior art keywords
content
watermark
viewer
blockchain network
blockchain
Prior art date
Application number
PCT/KR2018/011090
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English (en)
Korean (ko)
Inventor
조용원
Original Assignee
주식회사 비지트
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 주식회사 비지트 filed Critical 주식회사 비지트
Priority to SG11202102241TA priority Critical patent/SG11202102241TA/en
Publication of WO2020050447A1 publication Critical patent/WO2020050447A1/fr

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • 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
    • H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/835—Generation of protective data, e.g. certificates
    • H04N21/8358—Generation of protective data, e.g. certificates involving watermark

Definitions

  • the present invention relates to a method for managing the distribution process of VR (Virtual Reality) content using a blockchain network, and more specifically, it is illegal to monitor whether a watermark inserted in VR content is tampered with a blockchain.
  • Damage to copyright is caused by unauthorized copying and editing of digital content such as VR content.
  • YouTubers or content creators such as BJ (Broadcasting Jockey) generate profits in proportion to the number of views of the video, and if the content is copied and distributed without permission, economic loss occurs. This can cause the image to be lost.
  • BJ Broadcasting Jockey
  • the present invention is to solve the above problems, by effectively inserting a watermark of VR content and managing it through a blockchain network, watermark of VR content using a blockchain that can prevent forgery or illegal copying at its source. It aims to provide a management system and method.
  • a watermark management system for VR content using a blockchain is connected to a blockchain network, and a node generating a block for recording transactions on the blockchain network ;
  • VR Virtual Reality
  • the address information generated by using the unique address value assigned from the blockchain network and the keyframe information of the VR content, and the watermark for copyright protection of the VR content are the VR content.
  • a producer terminal that controls a transaction corresponding to a production activity of the VR content to be recorded in a block of the blockchain network;
  • the transaction corresponding to the playing action of the VR content is controlled to be recorded in a block of the blockchain network, the address information is restored using the watermark inserted in the VR content, and the restored value
  • a user terminal having a viewer that transmits verification information including information about the viewer to the blockchain network.
  • the producer terminal may insert the watermark into frames that are regularly spaced forward or backward from each keyframe of the VR content, but divide and insert the watermark into both channels of the corresponding frame.
  • the node may determine whether to falsify the VR content by analyzing verification information received from the viewer of the user terminal.
  • the node determines that the VR content is forged and contains a keyframe that does not include a watermark, and processes an exception. You can do it,
  • the node determines that the VR content is forged and includes a different watermark in a single file, and handles exception processing. Can be done.
  • the node may analyze the verification information received from the viewer of the user terminal during playback of the VR content and determine that the VR content has been forged and perform exception processing when the VR content has a watermark that cannot be restored. .
  • a method of managing a watermark of VR (Virtual Reality) content by a node connected to a blockchain network and generating a block for recording a transaction on the blockchain network is based on a request from the producer terminal.
  • a transaction corresponding to the playing action of the VR content is recorded in a block of the blockchain network, and the watermark inserted by the viewer into the VR content during playback of the VR content It may include; receiving and analyzing the verification information generated by using to determine whether the forgery of the VR content.
  • the entire process of production and distribution of VR content can be managed using a blockchain network.
  • FIG. 1 is a diagram for explaining a network configuration of a watermark management system for VR content using a blockchain according to an embodiment of the present invention.
  • FIG. 2 is a diagram for explaining a method of embedding a watermark in VR content according to an embodiment of the present invention.
  • FIG. 3 is a flowchart illustrating a method for managing watermark of VR content using a blockchain according to an embodiment of the present invention.
  • Blockchain is a decentralized data storage technology that connects data to blocks in the form of a chain and replicates and stores them simultaneously on numerous computers. This is because transaction records are sent to all users participating in the transaction without storing the transaction records on a centralized server, and every transaction participant shares information with each transaction so that data cannot be forged or altered.
  • the corresponding transaction block is created and transmitted to all participants on the network. As a result, mutual verification of the information on this block is completed and combined in the chain. If there is a cryptocurrency transfer transaction between A and B in the cryptocurrency blockchain, the transfer details including the cryptocurrency address and transfer amount of the trading parties will also be recorded in the block.
  • FIG. 1 is a diagram for explaining a network configuration of a watermark management system for VR content using a blockchain according to an embodiment of the present invention.
  • the blockchain network 100 maintains and manages a network of individual servers participating in a transaction without storing or managing transaction records in a centralized server. This individual server, or participant, is called a node. Nodes are connected to the blockchain network to create blocks that record transactions on the blockchain network.
  • Nodes store the transaction history, that is, the block chain in which transactions are recorded, on a computer, and even if some nodes are hacked and the existing contents are misaligned, data remains in multiple nodes, so that the data can be continuously preserved.
  • Each node of the blockchain network 100 performs a role of verifying whether the corresponding transaction is counterfeit by calculating the hash value of the entire ledger in the Merkle Tree, mining the block in which the transaction is recorded, and adding it to the blockchain. It is a mining agent that is paid a fee according to.
  • the producer terminal 110 with the authoring tool 111 as a means for generating VR content and / or the user terminal 120 with a viewer 121 as a means for playing distributed VR content is a blockchain. It can operate as a node participating in the network 100. In this case, the producer terminal 110 and / or the user terminal 120 may directly access the blockchain network 100 to execute a smart contract related to management of VR contents according to the present invention.
  • Smart contracts related to VR content management can be used by connecting to a node serving as a server.
  • the producer terminal 110 and / or the user terminal 120 may access the blockchain network 100 using a remote procedure call through a web browser or a predetermined access service.
  • Smart contracts created by users on the network are recorded in blocks, and the corresponding code is copied to other nodes, so that smart contracts can be executed in the virtual machines of each node.
  • the node of the blockchain network 100 records each of the production, copying, and reproducing actions of VR contents in a ledger and performs necessary procedures accordingly.
  • the VR content is first authored, a unique address on the blockchain network is assigned, and when the viewer 121 plays the VR content, a transaction of a type corresponding to the replay action is recorded in the corresponding wallet address of the blockchain book.
  • the viewer 121 reads the watermark while playing VR content to generate verification information and provides it to the blockchain network.
  • the node of the blockchain network 100 determines whether the watermark is tampered with verification information actively provided by the viewer 121 according to the smart contract, that is, whether the VR content is illegally edited or modified illegally or distributed without permission. You can.
  • the producer terminal 110 uses the unique address value assigned from the blockchain network 100 and the key information of the VR content to generate the address information and the watermark for copyright protection of the VR content in VR. It can be controlled to be inserted into the content and the transaction corresponding to the production behavior of the VR content is recorded in the block of the blockchain network 100.
  • the user terminal 120 is provided with a viewer 121, and the viewer 121 controls such that a transaction corresponding to a behavior of playing VR content is recorded in a block of the blockchain network 100 when VR content is played, and VR content
  • the address information embedded in the content may be restored using the watermark embedded in the content, and verification information including the restored value and information about the viewer itself may be transmitted to the blockchain network 100.
  • the node may determine whether to falsify the VR content by analyzing this verification information received from the viewer 121 of the user terminal 120.
  • FIG. 2 is a diagram for explaining a method of embedding a watermark in VR content according to an embodiment of the present invention.
  • the authoring tool 111 inserts a watermark when authoring VR content, that is, when it is first created.
  • the VR content is composed of two channels (left and right or up and down), and the watermark can be dividedly inserted into both channels of each key frame 210. A part 230 of the watermark is inserted into the first channel and the rest 240 of the watermark is inserted into the second channel.
  • a watermark is inserted by inserting it into the second frame from each keyframe. If a watermark is inserted into a frame other than a keyframe, the watermark is not noticeable during playback because it is not only a keyframe, but also passes by 1/30 second when playing the screen. There is also an advantage that it is difficult to find a watermark even if you try to flip or edit it in key frame units.
  • FIG. 3 is a flowchart illustrating a method for managing watermark of VR content using a blockchain according to an embodiment of the present invention.
  • step S31 the address value on the blockchain network is uniquely assigned when authoring VR content, that is, when it is first created.
  • address information generated using the assigned unique address value and key frame information and a watermark for copyright protection will be inserted.
  • the insertion of the address information may be performed by calculating the corresponding address value and key frame information according to a predetermined predetermined arithmetic expression and dividing it into both channels of the key frame.
  • step S32 the production transaction of the VR content is recorded in the blockchain network at the request of the producer terminal 110 who authored the VR content. Accordingly, information indicating that VR content having a unique address value on the blockchain network as identification information has been generated and started to be distributed can be shared with all nodes participating in the blockchain network.
  • step S33 when the VR content is played by the viewer 121, the VR content playback transaction is recorded in the blockchain network according to the request of the viewer 121. Accordingly, information indicating that VR content using the unique address value on the blockchain network as the identification information has been played at a specific time by the specific viewer 121 may be shared with all nodes participating in the blockchain network.
  • step S34 verification information received from the viewer 121 during playback of the VR content is analyzed to determine whether the VR content being played is forged.
  • the verification information received from the viewer 121 may include a value obtained by restoring the address information using a watermark embedded in VR content and information about the viewer.
  • the viewer 121 may restore address information including a specific address value of the blockchain network by combining watermarks divided into both channels of VR content and restoring them through a predetermined predetermined arithmetic expression.
  • the viewer 121 may transmit a flag indicating whether streaming or reproduction after reproduction in addition to address information restored using a predetermined arithmetic expression and identification information about the viewer itself as verification information when playing VR content. .
  • step S35 if it is determined that the VR content has been forged, a predetermined exception handling is performed.
  • the forgery type and exception handling of VR content will be described in detail below.
  • the unique address value does not exist in the verification information received from the viewer 121 during VR content playback, it is determined that the VR content is forged and that there is a keyframe that does not include a watermark in the middle, and exception processing is performed. It is possible to identify which VR content is falsified through information immediately before or after received from the viewer, and which viewer is playing the content through viewer information (for example, an IP address). For the exception handling, the forgery-related information obtained as described above can be recorded and shared on the blockchain and can be notified to a predetermined external device.
  • the unique address value included in the verification information received from the viewer 121 is changed during VR content playback, it is determined that the VR content is forged and contains a different watermark in a single file, and exception processing is performed. If a different address value is suddenly interrupted while receiving verification information from the viewer 121, the streaming session is not newly established, and if the existing file is unloaded and unplayed by loading the new file (load), it is forged. It can be judged by content.
  • the viewer 121 informs the blockchain network that it is playing it according to the header information, and the node of the blockchain network can judge the forged VR content and handle exceptions. have.
  • the production and distribution of VR content can be managed using a blockchain network.
  • the inserted watermark is tampered with, and the producer or copyright holder is notified by grasping the falsification through verification information collected from the viewer 121, and on the blockchain network. Exception handling such as recording of falsification facts is possible.
  • the method according to an embodiment of the present invention is implemented in the form of program instructions that can be executed through various computer means and can be recorded on a computer-readable medium.
  • the computer-readable medium may include program instructions, data files, data structures, or the like alone or in combination.
  • the program instructions recorded on the medium may be specially designed and configured for the present invention, or may be known and available to those skilled in computer software.
  • Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tapes, optical media such as CD-ROMs, DVDs, and magnetic media such as floptical disks.
  • -Hardware devices specially configured to store and execute program instructions such as magneto-optical media, and ROM, RAM, flash memory, and the like.
  • Examples of program instructions include high-level language code that can be executed by a computer using an interpreter, etc., as well as machine language codes produced by a compiler.

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • Computer Security & Cryptography (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Technology Law (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Editing Of Facsimile Originals (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

Système et procédé de gestion d'un filigrane de contenu de réalité virtuelle (VR) au moyen d'une chaîne de blocs. La présente invention concerne un système de gestion d'un filigrane de contenu de VR pouvant comprendre : des nœuds connectés à un réseau de chaîne de blocs et pour générer des blocs pour enregistrer des transactions dans le réseau de chaîne de blocs ; un terminal créateur pour, lors de la création d'un contenu de VR, insérer, dans le contenu de VR, des informations d'adresse, générées au moyen d'une valeur d'adresse unique attribuée à partir du réseau de chaîne de blocs et des informations de trame clé du contenu VR, et un filigrane pour protéger les droits d'auteur du contenu de VR, et commander de telle sorte qu'une transaction correspondant à la production du contenu de VR est enregistrée dans un bloc du réseau de chaîne de blocs ; et un terminal utilisateur, ayant un visualiseur, pour, lorsque le contenu de VR est lu, commander de telle sorte qu'une transaction correspondant à la lecture du contenu de VR est enregistrée dans un bloc du réseau de chaîne de blocs, restaurer les informations d'adresse au moyen du filigrane inséré dans le contenu de VR, et transmettre des informations de vérification comprenant des informations se rapportant au visualiseur et une valeur restaurée au réseau de chaîne de blocs.
PCT/KR2018/011090 2018-09-07 2018-09-20 Système et procédé de gestion de filigrane de contenu de vr au moyen d'une chaîne de blocs WO2020050447A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SG11202102241TA SG11202102241TA (en) 2018-09-07 2018-09-20 System and method for managing watermark of vr content by means of blockchain

Applications Claiming Priority (2)

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KR1020180107321A KR102110163B1 (ko) 2018-09-07 2018-09-07 블록체인을 이용한 ｖｒ 컨텐츠의 워터마크 관리 시스템 및 방법
KR10-2018-0107321 2018-09-07

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KR101361108B1 (ko) * 2013-02-05 2014-02-13 한국과학기술원 Ｄｉｂｒ ３ｄ영상 저작권 보호를 위한 워터마킹 시스템 및 그 방법
KR20150144645A (ko) * 2014-06-17 2015-12-28 어준선 디지털 화폐와 연동되어 디지털 컨텐츠를 생성, 제공, 재생하기 위한 방법, 이를 이용한 단말 및 컴퓨터 판독 가능한 기록 매체
KR20180029695A (ko) * 2016-09-13 2018-03-21 김동만 블록체인을 이용한 데이터 전송 시스템 및 방법
KR20180042145A (ko) * 2017-12-28 2018-04-25 주식회사 차칵 미디어 파일 위변조 검증 방법

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KR100643273B1 (ko) * 2004-05-27 2006-11-10 삼성전자주식회사 비디오 워터마킹 방법 및 장치와, 비디오 워터마킹을 이용한 비디오 콘텐츠 보호방법 및 장치
US20180089651A9 (en) * 2015-11-06 2018-03-29 Cable Television Laboratories, Inc Blockchaining systems and methods for frictionless media

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110031734A (ko) * 2009-09-21 2011-03-29 한국전자통신연구원 사용자 단말 시스템, 상기 시스템을 포함하는 디지털 저작권 관리 시스템 및 그 관리방법
KR101361108B1 (ko) * 2013-02-05 2014-02-13 한국과학기술원 Ｄｉｂｒ ３ｄ영상 저작권 보호를 위한 워터마킹 시스템 및 그 방법
KR20150144645A (ko) * 2014-06-17 2015-12-28 어준선 디지털 화폐와 연동되어 디지털 컨텐츠를 생성, 제공, 재생하기 위한 방법, 이를 이용한 단말 및 컴퓨터 판독 가능한 기록 매체
KR20180029695A (ko) * 2016-09-13 2018-03-21 김동만 블록체인을 이용한 데이터 전송 시스템 및 방법
KR20180042145A (ko) * 2017-12-28 2018-04-25 주식회사 차칵 미디어 파일 위변조 검증 방법

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KR102110163B1 (ko) 2020-05-14
KR20200028760A (ko) 2020-03-17
SG11202102241TA (en) 2021-04-29

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